ECMAScript5 새로운 방법
127517 단어 ECMAScript
// Copyright 2009-2012 by contributors, MIT License
// vim: ts=4 sts=4 sw=4 expandtab
// Module systems magic dance
(function (definition) {
// RequireJS
if (typeof define == "function") {
define(definition);
// YUI3
} else if (typeof YUI == "function") {
YUI.add("es5-sham", definition);
// CommonJS and <script>
} else {
definition();
}
})(function () {
// ES5 15.2.3.2
// http://es5.github.com/#x15.2.3.2
if (!Object.getPrototypeOf) {
// https://github.com/kriskowal/es5-shim/issues#issue/2
// http://ejohn.org/blog/objectgetprototypeof/
// recommended by fschaefer on github
Object.getPrototypeOf = function getPrototypeOf(object) {
return object.__proto__ || (
object.constructor
? object.constructor.prototype
: prototypeOfObject
);
};
}
// ES5 15.2.3.3
// http://es5.github.com/#x15.2.3.3
if (!Object.getOwnPropertyDescriptor) {
var ERR_NON_OBJECT = "Object.getOwnPropertyDescriptor called on a non-object: ";
Object.getOwnPropertyDescriptor = function getOwnPropertyDescriptor(object, property) {
if ((typeof object != "object" && typeof object != "function") || object === null) {
throw new TypeError(ERR_NON_OBJECT + object);
}
// If object does not owns property return undefined immediately.
if (!owns(object, property)) {
return;
}
// If object has a property then it's for sure both `enumerable` and
// `configurable`.
var descriptor = { enumerable: true, configurable: true };
// If JS engine supports accessor properties then property may be a
// getter or setter.
if (supportsAccessors) {
// Unfortunately `__lookupGetter__` will return a getter even
// if object has own non getter property along with a same named
// inherited getter. To avoid misbehavior we temporary remove
// `__proto__` so that `__lookupGetter__` will return getter only
// if it's owned by an object.
var prototype = object.__proto__;
object.__proto__ = prototypeOfObject;
var getter = lookupGetter(object, property);
var setter = lookupSetter(object, property);
// Once we have getter and setter we can put values back.
object.__proto__ = prototype;
if (getter || setter) {
if (getter) {
descriptor.get = getter;
}
if (setter) {
descriptor.set = setter;
}
// If it was accessor property we're done and return here
// in order to avoid adding `value` to the descriptor.
return descriptor;
}
}
// If we got this far we know that object has an own property that is
// not an accessor so we set it as a value and return descriptor.
descriptor.value = object[property];
return descriptor;
};
}
// ES5 15.2.3.4
// http://es5.github.com/#x15.2.3.4
if (!Object.getOwnPropertyNames) {
Object.getOwnPropertyNames = function getOwnPropertyNames(object) {
return Object.keys(object);
};
}
// ES5 15.2.3.5
// http://es5.github.com/#x15.2.3.5
if (!Object.create) {
// Contributed by Brandon Benvie, October, 2012
var createEmpty;
var supportsProto = Object.prototype.__proto__ === null;
if (supportsProto || typeof document == 'undefined') {
createEmpty = function () {
return { "__proto__": null };
};
} else {
// In old IE __proto__ can't be used to manually set `null`, nor does
// any other method exist to make an object that inherits from nothing,
// aside from Object.prototype itself. Instead, create a new global
// object and *steal* its Object.prototype and strip it bare. This is
// used as the prototype to create nullary objects.
createEmpty = (function () {
var iframe = document.createElement('iframe');
var parent = document.body || document.documentElement;
iframe.style.display = 'none';
parent.appendChild(iframe);
iframe.src = 'javascript:';
var empty = iframe.contentWindow.Object.prototype;
parent.removeChild(iframe);
iframe = null;
delete empty.constructor;
delete empty.hasOwnProperty;
delete empty.propertyIsEnumerable;
delete empty.isPrototypeOf;
delete empty.toLocaleString;
delete empty.toString;
delete empty.valueOf;
empty.__proto__ = null;
function Empty() {}
Empty.prototype = empty;
return function () {
return new Empty();
};
})();
}
Object.create = function create(prototype, properties) {
var object;
function Type() {} // An empty constructor.
if (prototype === null) {
object = createEmpty();
} else {
if (typeof prototype !== "object" && typeof prototype !== "function") {
// In the native implementation `parent` can be `null`
// OR *any* `instanceof Object` (Object|Function|Array|RegExp|etc)
// Use `typeof` tho, b/c in old IE, DOM elements are not `instanceof Object`
// like they are in modern browsers. Using `Object.create` on DOM elements
// is...err...probably inappropriate, but the native version allows for it.
throw new TypeError("Object prototype may only be an Object or null"); // same msg as Chrome
}
Type.prototype = prototype;
object = new Type();
// IE has no built-in implementation of `Object.getPrototypeOf`
// neither `__proto__`, but this manually setting `__proto__` will
// guarantee that `Object.getPrototypeOf` will work as expected with
// objects created using `Object.create`
object.__proto__ = prototype;
}
if (properties !== void 0) {
Object.defineProperties(object, properties);
}
return object;
};
}
// ES5 15.2.3.6
// http://es5.github.com/#x15.2.3.6
// Patch for WebKit and IE8 standard mode
// Designed by hax <hax.github.com>
// related issue: https://github.com/kriskowal/es5-shim/issues#issue/5
// IE8 Reference:
// http://msdn.microsoft.com/en-us/library/dd282900.aspx
// http://msdn.microsoft.com/en-us/library/dd229916.aspx
// WebKit Bugs:
// https://bugs.webkit.org/show_bug.cgi?id=36423
function doesDefinePropertyWork(object) {
try {
Object.defineProperty(object, "sentinel", {});
return "sentinel" in object;
} catch (exception) {
// returns falsy
}
}
// check whether defineProperty works if it's given. Otherwise,
// shim partially.
if (Object.defineProperty) {
var definePropertyWorksOnObject = doesDefinePropertyWork({});
var definePropertyWorksOnDom = typeof document == "undefined" ||
doesDefinePropertyWork(document.createElement("div"));
if (!definePropertyWorksOnObject || !definePropertyWorksOnDom) {
var definePropertyFallback = Object.defineProperty,
definePropertiesFallback = Object.defineProperties;
}
}
if (!Object.defineProperty || definePropertyFallback) {
var ERR_NON_OBJECT_DESCRIPTOR = "Property description must be an object: ";
var ERR_NON_OBJECT_TARGET = "Object.defineProperty called on non-object: "
var ERR_ACCESSORS_NOT_SUPPORTED = "getters & setters can not be defined " +
"on this javascript engine";
Object.defineProperty = function defineProperty(object, property, descriptor) {
if ((typeof object != "object" && typeof object != "function") || object === null) {
throw new TypeError(ERR_NON_OBJECT_TARGET + object);
}
if ((typeof descriptor != "object" && typeof descriptor != "function") || descriptor === null) {
throw new TypeError(ERR_NON_OBJECT_DESCRIPTOR + descriptor);
}
// make a valiant attempt to use the real defineProperty
// for I8's DOM elements.
if (definePropertyFallback) {
try {
return definePropertyFallback.call(Object, object, property, descriptor);
} catch (exception) {
// try the shim if the real one doesn't work
}
}
// If it's a data property.
if (owns(descriptor, "value")) {
// fail silently if "writable", "enumerable", or "configurable"
// are requested but not supported
/*
// alternate approach:
if ( // can't implement these features; allow false but not true
!(owns(descriptor, "writable") ? descriptor.writable : true) ||
!(owns(descriptor, "enumerable") ? descriptor.enumerable : true) ||
!(owns(descriptor, "configurable") ? descriptor.configurable : true)
)
throw new RangeError(
"This implementation of Object.defineProperty does not " +
"support configurable, enumerable, or writable."
);
*/
if (supportsAccessors && (lookupGetter(object, property) ||
lookupSetter(object, property)))
{
// As accessors are supported only on engines implementing
// `__proto__` we can safely override `__proto__` while defining
// a property to make sure that we don't hit an inherited
// accessor.
var prototype = object.__proto__;
object.__proto__ = prototypeOfObject;
// Deleting a property anyway since getter / setter may be
// defined on object itself.
delete object[property];
object[property] = descriptor.value;
// Setting original `__proto__` back now.
object.__proto__ = prototype;
} else {
object[property] = descriptor.value;
}
} else {
if (!supportsAccessors) {
throw new TypeError(ERR_ACCESSORS_NOT_SUPPORTED);
}
// If we got that far then getters and setters can be defined !!
if (owns(descriptor, "get")) {
defineGetter(object, property, descriptor.get);
}
if (owns(descriptor, "set")) {
defineSetter(object, property, descriptor.set);
}
}
return object;
};
}
// ES5 15.2.3.7
// http://es5.github.com/#x15.2.3.7
if (!Object.defineProperties || definePropertiesFallback) {
Object.defineProperties = function defineProperties(object, properties) {
// make a valiant attempt to use the real defineProperties
if (definePropertiesFallback) {
try {
return definePropertiesFallback.call(Object, object, properties);
} catch (exception) {
// try the shim if the real one doesn't work
}
}
for (var property in properties) {
if (owns(properties, property) && property != "__proto__") {
Object.defineProperty(object, property, properties[property]);
}
}
return object;
};
}
// ES5 15.2.3.8
// http://es5.github.com/#x15.2.3.8
if (!Object.seal) {
Object.seal = function seal(object) {
// this is misleading and breaks feature-detection, but
// allows "securable" code to "gracefully" degrade to working
// but insecure code.
return object;
};
}
// ES5 15.2.3.9
// http://es5.github.com/#x15.2.3.9
if (!Object.freeze) {
Object.freeze = function freeze(object) {
// this is misleading and breaks feature-detection, but
// allows "securable" code to "gracefully" degrade to working
// but insecure code.
return object;
};
}
// detect a Rhino bug and patch it
try {
Object.freeze(function () {});
} catch (exception) {
Object.freeze = (function freeze(freezeObject) {
return function freeze(object) {
if (typeof object == "function") {
return object;
} else {
return freezeObject(object);
}
};
})(Object.freeze);
}
// ES5 15.2.3.10
// http://es5.github.com/#x15.2.3.10
if (!Object.preventExtensions) {
Object.preventExtensions = function preventExtensions(object) {
// this is misleading and breaks feature-detection, but
// allows "securable" code to "gracefully" degrade to working
// but insecure code.
return object;
};
}
// ES5 15.2.3.11
// http://es5.github.com/#x15.2.3.11
if (!Object.isSealed) {
Object.isSealed = function isSealed(object) {
return false;
};
}
// ES5 15.2.3.12
// http://es5.github.com/#x15.2.3.12
if (!Object.isFrozen) {
Object.isFrozen = function isFrozen(object) {
return false;
};
}
// ES5 15.2.3.13
// http://es5.github.com/#x15.2.3.13
if (!Object.isExtensible) {
Object.isExtensible = function isExtensible(object) {
// 1. If Type(O) is not Object throw a TypeError exception.
if (Object(object) !== object) {
throw new TypeError(); // TODO message
}
// 2. Return the Boolean value of the [[Extensible]] internal property of O.
var name = '';
while (owns(object, name)) {
name += '?';
}
object[name] = true;
var returnValue = owns(object, name);
delete object[name];
return returnValue;
};
}
});
//----------------------------------------------------------------------//
//Copyright 2009-2012 by contributors, MIT License
//vim: ts=4 sts=4 sw=4 expandtab
//Module systems magic dance
(function (definition) {
// RequireJS
if (typeof define == "function") {
define(definition);
// YUI3
} else if (typeof YUI == "function") {
YUI.add("es5", definition);
// CommonJS and <script>
} else {
definition();
}
})(function () {
/**
* Brings an environment as close to ECMAScript 5 compliance
* as is possible with the facilities of erstwhile engines.
*
* Annotated ES5: http://es5.github.com/ (specific links below)
* ES5 Spec: http://www.ecma-international.org/publications/files/ECMA-ST/Ecma-262.pdf
* Required reading: http://javascriptweblog.wordpress.com/2011/12/05/extending-javascript-natives/
*/
//
//Function
//========
//
//ES-5 15.3.4.5
//http://es5.github.com/#x15.3.4.5
function Empty() {}
if (!Function.prototype.bind) {
Function.prototype.bind = function bind(that) { // .length is 1
// 1. Let Target be the this value.
var target = this;
// 2. If IsCallable(Target) is false, throw a TypeError exception.
if (typeof target != "function") {
throw new TypeError("Function.prototype.bind called on incompatible " + target);
}
// 3. Let A be a new (possibly empty) internal list of all of the
// argument values provided after thisArg (arg1, arg2 etc), in order.
// XXX slicedArgs will stand in for "A" if used
var args = slice.call(arguments, 1); // for normal call
// 4. Let F be a new native ECMAScript object.
// 11. Set the [[Prototype]] internal property of F to the standard
// built-in Function prototype object as specified in 15.3.3.1.
// 12. Set the [[Call]] internal property of F as described in
// 15.3.4.5.1.
// 13. Set the [[Construct]] internal property of F as described in
// 15.3.4.5.2.
// 14. Set the [[HasInstance]] internal property of F as described in
// 15.3.4.5.3.
var bound = function () {
if (this instanceof bound) {
// 15.3.4.5.2 [[Construct]]
// When the [[Construct]] internal method of a function object,
// F that was created using the bind function is called with a
// list of arguments ExtraArgs, the following steps are taken:
// 1. Let target be the value of F's [[TargetFunction]]
// internal property.
// 2. If target has no [[Construct]] internal method, a
// TypeError exception is thrown.
// 3. Let boundArgs be the value of F's [[BoundArgs]] internal
// property.
// 4. Let args be a new list containing the same values as the
// list boundArgs in the same order followed by the same
// values as the list ExtraArgs in the same order.
// 5. Return the result of calling the [[Construct]] internal
// method of target providing args as the arguments.
var result = target.apply(
this,
args.concat(slice.call(arguments))
);
if (Object(result) === result) {
return result;
}
return this;
} else {
// 15.3.4.5.1 [[Call]]
// When the [[Call]] internal method of a function object, F,
// which was created using the bind function is called with a
// this value and a list of arguments ExtraArgs, the following
// steps are taken:
// 1. Let boundArgs be the value of F's [[BoundArgs]] internal
// property.
// 2. Let boundThis be the value of F's [[BoundThis]] internal
// property.
// 3. Let target be the value of F's [[TargetFunction]] internal
// property.
// 4. Let args be a new list containing the same values as the
// list boundArgs in the same order followed by the same
// values as the list ExtraArgs in the same order.
// 5. Return the result of calling the [[Call]] internal method
// of target providing boundThis as the this value and
// providing args as the arguments.
// equiv: target.call(this, ...boundArgs, ...args)
return target.apply(
that,
args.concat(slice.call(arguments))
);
}
};
if(target.prototype) {
Empty.prototype = target.prototype;
bound.prototype = new Empty();
// Clean up dangling references.
Empty.prototype = null;
}
// XXX bound.length is never writable, so don't even try
//
// 15. If the [[Class]] internal property of Target is "Function", then
// a. Let L be the length property of Target minus the length of A.
// b. Set the length own property of F to either 0 or L, whichever is
// larger.
// 16. Else set the length own property of F to 0.
// 17. Set the attributes of the length own property of F to the values
// specified in 15.3.5.1.
// TODO
// 18. Set the [[Extensible]] internal property of F to true.
// TODO
// 19. Let thrower be the [[ThrowTypeError]] function Object (13.2.3).
// 20. Call the [[DefineOwnProperty]] internal method of F with
// arguments "caller", PropertyDescriptor {[[Get]]: thrower, [[Set]]:
// thrower, [[Enumerable]]: false, [[Configurable]]: false}, and
// false.
// 21. Call the [[DefineOwnProperty]] internal method of F with
// arguments "arguments", PropertyDescriptor {[[Get]]: thrower,
// [[Set]]: thrower, [[Enumerable]]: false, [[Configurable]]: false},
// and false.
// TODO
// NOTE Function objects created using Function.prototype.bind do not
// have a prototype property or the [[Code]], [[FormalParameters]], and
// [[Scope]] internal properties.
// XXX can't delete prototype in pure-js.
// 22. Return F.
return bound;
};
}
//Shortcut to an often accessed properties, in order to avoid multiple
//dereference that costs universally.
//_Please note: Shortcuts are defined after `Function.prototype.bind` as we
//us it in defining shortcuts.
var call = Function.prototype.call;
var prototypeOfArray = Array.prototype;
var prototypeOfObject = Object.prototype;
var slice = prototypeOfArray.slice;
//Having a toString local variable name breaks in Opera so use _toString.
var _toString = call.bind(prototypeOfObject.toString);
var owns = call.bind(prototypeOfObject.hasOwnProperty);
//If JS engine supports accessors creating shortcuts.
var defineGetter;
var defineSetter;
var lookupGetter;
var lookupSetter;
var supportsAccessors;
if ((supportsAccessors = owns(prototypeOfObject, "__defineGetter__"))) {
defineGetter = call.bind(prototypeOfObject.__defineGetter__);
defineSetter = call.bind(prototypeOfObject.__defineSetter__);
lookupGetter = call.bind(prototypeOfObject.__lookupGetter__);
lookupSetter = call.bind(prototypeOfObject.__lookupSetter__);
}
//
//Array
//=====
//
//ES5 15.4.4.12
//http://es5.github.com/#x15.4.4.12
//Default value for second param
//[bugfix, ielt9, old browsers]
//IE < 9 bug: [1,2].splice(0).join("") == "" but should be "12"
if ([1,2].splice(0).length != 2) {
var array_splice = Array.prototype.splice;
Array.prototype.splice = function(start, deleteCount) {
if (!arguments.length) {
return [];
} else {
return array_splice.apply(this, [
start === void 0 ? 0 : start,
deleteCount === void 0 ? (this.length - start) : deleteCount
].concat(slice.call(arguments, 2)))
}
};
}
//ES5 15.4.4.12
//http://es5.github.com/#x15.4.4.13
//Return len+argCount.
//[bugfix, ielt8]
//IE < 8 bug: [].unshift(0) == undefined but should be "1"
if ([].unshift(0) != 1) {
var array_unshift = Array.prototype.unshift;
Array.prototype.unshift = function() {
array_unshift.apply(this, arguments);
return this.length;
};
}
//ES5 15.4.3.2
//http://es5.github.com/#x15.4.3.2
//https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/isArray
if (!Array.isArray) {
Array.isArray = function isArray(obj) {
return _toString(obj) == "[object Array]";
};
}
//The IsCallable() check in the Array functions
//has been replaced with a strict check on the
//internal class of the object to trap cases where
//the provided function was actually a regular
//expression literal, which in V8 and
//JavaScriptCore is a typeof "function". Only in
//V8 are regular expression literals permitted as
//reduce parameters, so it is desirable in the
//general case for the shim to match the more
//strict and common behavior of rejecting regular
//expressions.
//ES5 15.4.4.18
//http://es5.github.com/#x15.4.4.18
//https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/array/forEach
//Check failure of by-index access of string characters (IE < 9)
//and failure of `0 in boxedString` (Rhino)
var boxedString = Object("a"),
splitString = boxedString[0] != "a" || !(0 in boxedString);
if (!Array.prototype.forEach) {
Array.prototype.forEach = function forEach(fun /*, thisp*/) {
var object = toObject(this),
self = splitString && _toString(this) == "[object String]" ?
this.split("") :
object,
thisp = arguments[1],
i = -1,
length = self.length >>> 0;
// If no callback function or if callback is not a callable function
if (_toString(fun) != "[object Function]") {
throw new TypeError(); // TODO message
}
while (++i < length) {
if (i in self) {
// Invoke the callback function with call, passing arguments:
// context, property value, property key, thisArg object
// context
fun.call(thisp, self[i], i, object);
}
}
};
}
//ES5 15.4.4.19
//http://es5.github.com/#x15.4.4.19
//https://developer.mozilla.org/en/Core_JavaScript_1.5_Reference/Objects/Array/map
if (!Array.prototype.map) {
Array.prototype.map = function map(fun /*, thisp*/) {
var object = toObject(this),
self = splitString && _toString(this) == "[object String]" ?
this.split("") :
object,
length = self.length >>> 0,
result = Array(length),
thisp = arguments[1];
// If no callback function or if callback is not a callable function
if (_toString(fun) != "[object Function]") {
throw new TypeError(fun + " is not a function");
}
for (var i = 0; i < length; i++) {
if (i in self)
result[i] = fun.call(thisp, self[i], i, object);
}
return result;
};
}
//ES5 15.4.4.20
//http://es5.github.com/#x15.4.4.20
//https://developer.mozilla.org/en/Core_JavaScript_1.5_Reference/Objects/Array/filter
if (!Array.prototype.filter) {
Array.prototype.filter = function filter(fun /*, thisp */) {
var object = toObject(this),
self = splitString && _toString(this) == "[object String]" ?
this.split("") :
object,
length = self.length >>> 0,
result = [],
value,
thisp = arguments[1];
// If no callback function or if callback is not a callable function
if (_toString(fun) != "[object Function]") {
throw new TypeError(fun + " is not a function");
}
for (var i = 0; i < length; i++) {
if (i in self) {
value = self[i];
if (fun.call(thisp, value, i, object)) {
result.push(value);
}
}
}
return result;
};
}
//ES5 15.4.4.16
//http://es5.github.com/#x15.4.4.16
//https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/every
if (!Array.prototype.every) {
Array.prototype.every = function every(fun /*, thisp */) {
var object = toObject(this),
self = splitString && _toString(this) == "[object String]" ?
this.split("") :
object,
length = self.length >>> 0,
thisp = arguments[1];
// If no callback function or if callback is not a callable function
if (_toString(fun) != "[object Function]") {
throw new TypeError(fun + " is not a function");
}
for (var i = 0; i < length; i++) {
if (i in self && !fun.call(thisp, self[i], i, object)) {
return false;
}
}
return true;
};
}
//ES5 15.4.4.17
//http://es5.github.com/#x15.4.4.17
//https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/some
if (!Array.prototype.some) {
Array.prototype.some = function some(fun /*, thisp */) {
var object = toObject(this),
self = splitString && _toString(this) == "[object String]" ?
this.split("") :
object,
length = self.length >>> 0,
thisp = arguments[1];
// If no callback function or if callback is not a callable function
if (_toString(fun) != "[object Function]") {
throw new TypeError(fun + " is not a function");
}
for (var i = 0; i < length; i++) {
if (i in self && fun.call(thisp, self[i], i, object)) {
return true;
}
}
return false;
};
}
//ES5 15.4.4.21
//http://es5.github.com/#x15.4.4.21
//https://developer.mozilla.org/en/Core_JavaScript_1.5_Reference/Objects/Array/reduce
if (!Array.prototype.reduce) {
Array.prototype.reduce = function reduce(fun /*, initial*/) {
var object = toObject(this),
self = splitString && _toString(this) == "[object String]" ?
this.split("") :
object,
length = self.length >>> 0;
// If no callback function or if callback is not a callable function
if (_toString(fun) != "[object Function]") {
throw new TypeError(fun + " is not a function");
}
// no value to return if no initial value and an empty array
if (!length && arguments.length == 1) {
throw new TypeError("reduce of empty array with no initial value");
}
var i = 0;
var result;
if (arguments.length >= 2) {
result = arguments[1];
} else {
do {
if (i in self) {
result = self[i++];
break;
}
// if array contains no values, no initial value to return
if (++i >= length) {
throw new TypeError("reduce of empty array with no initial value");
}
} while (true);
}
for (; i < length; i++) {
if (i in self) {
result = fun.call(void 0, result, self[i], i, object);
}
}
return result;
};
}
//ES5 15.4.4.22
//http://es5.github.com/#x15.4.4.22
//https://developer.mozilla.org/en/Core_JavaScript_1.5_Reference/Objects/Array/reduceRight
if (!Array.prototype.reduceRight) {
Array.prototype.reduceRight = function reduceRight(fun /*, initial*/) {
var object = toObject(this),
self = splitString && _toString(this) == "[object String]" ?
this.split("") :
object,
length = self.length >>> 0;
// If no callback function or if callback is not a callable function
if (_toString(fun) != "[object Function]") {
throw new TypeError(fun + " is not a function");
}
// no value to return if no initial value, empty array
if (!length && arguments.length == 1) {
throw new TypeError("reduceRight of empty array with no initial value");
}
var result, i = length - 1;
if (arguments.length >= 2) {
result = arguments[1];
} else {
do {
if (i in self) {
result = self[i--];
break;
}
// if array contains no values, no initial value to return
if (--i < 0) {
throw new TypeError("reduceRight of empty array with no initial value");
}
} while (true);
}
do {
if (i in this) {
result = fun.call(void 0, result, self[i], i, object);
}
} while (i--);
return result;
};
}
//ES5 15.4.4.14
//http://es5.github.com/#x15.4.4.14
//https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/indexOf
if (!Array.prototype.indexOf || ([0, 1].indexOf(1, 2) != -1)) {
Array.prototype.indexOf = function indexOf(sought /*, fromIndex */ ) {
var self = splitString && _toString(this) == "[object String]" ?
this.split("") :
toObject(this),
length = self.length >>> 0;
if (!length) {
return -1;
}
var i = 0;
if (arguments.length > 1) {
i = toInteger(arguments[1]);
}
// handle negative indices
i = i >= 0 ? i : Math.max(0, length + i);
for (; i < length; i++) {
if (i in self && self[i] === sought) {
return i;
}
}
return -1;
};
}
//ES5 15.4.4.15
//http://es5.github.com/#x15.4.4.15
//https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Array/lastIndexOf
if (!Array.prototype.lastIndexOf || ([0, 1].lastIndexOf(0, -3) != -1)) {
Array.prototype.lastIndexOf = function lastIndexOf(sought /*, fromIndex */) {
var self = splitString && _toString(this) == "[object String]" ?
this.split("") :
toObject(this),
length = self.length >>> 0;
if (!length) {
return -1;
}
var i = length - 1;
if (arguments.length > 1) {
i = Math.min(i, toInteger(arguments[1]));
}
// handle negative indices
i = i >= 0 ? i : length - Math.abs(i);
for (; i >= 0; i--) {
if (i in self && sought === self[i]) {
return i;
}
}
return -1;
};
}
//
//Object
//======
//
//ES5 15.2.3.14
//http://es5.github.com/#x15.2.3.14
if (!Object.keys) {
// http://whattheheadsaid.com/2010/10/a-safer-object-keys-compatibility-implementation
var hasDontEnumBug = true,
dontEnums = [
"toString",
"toLocaleString",
"valueOf",
"hasOwnProperty",
"isPrototypeOf",
"propertyIsEnumerable",
"constructor"
],
dontEnumsLength = dontEnums.length;
for (var key in {"toString": null}) {
hasDontEnumBug = false;
}
Object.keys = function keys(object) {
if (
(typeof object != "object" && typeof object != "function") ||
object === null
) {
throw new TypeError("Object.keys called on a non-object");
}
var keys = [];
for (var name in object) {
if (owns(object, name)) {
keys.push(name);
}
}
if (hasDontEnumBug) {
for (var i = 0, ii = dontEnumsLength; i < ii; i++) {
var dontEnum = dontEnums[i];
if (owns(object, dontEnum)) {
keys.push(dontEnum);
}
}
}
return keys;
};
}
//
//Date
//====
//
//ES5 15.9.5.43
//http://es5.github.com/#x15.9.5.43
//This function returns a String value represent the instance in time
//represented by this Date object. The format of the String is the Date Time
//string format defined in 15.9.1.15. All fields are present in the String.
//The time zone is always UTC, denoted by the suffix Z. If the time value of
//this object is not a finite Number a RangeError exception is thrown.
var negativeDate = -62198755200000,
negativeYearString = "-000001";
if (
!Date.prototype.toISOString ||
(new Date(negativeDate).toISOString().indexOf(negativeYearString) === -1)
) {
Date.prototype.toISOString = function toISOString() {
var result, length, value, year, month;
if (!isFinite(this)) {
throw new RangeError("Date.prototype.toISOString called on non-finite value.");
}
year = this.getUTCFullYear();
month = this.getUTCMonth();
// see https://github.com/kriskowal/es5-shim/issues/111
year += Math.floor(month / 12);
month = (month % 12 + 12) % 12;
// the date time string format is specified in 15.9.1.15.
result = [month + 1, this.getUTCDate(),
this.getUTCHours(), this.getUTCMinutes(), this.getUTCSeconds()];
year = (
(year < 0 ? "-" : (year > 9999 ? "+" : "")) +
("00000" + Math.abs(year))
.slice(0 <= year && year <= 9999 ? -4 : -6)
);
length = result.length;
while (length--) {
value = result[length];
// pad months, days, hours, minutes, and seconds to have two
// digits.
if (value < 10) {
result[length] = "0" + value;
}
}
// pad milliseconds to have three digits.
return (
year + "-" + result.slice(0, 2).join("-") +
"T" + result.slice(2).join(":") + "." +
("000" + this.getUTCMilliseconds()).slice(-3) + "Z"
);
};
}
//ES5 15.9.5.44
//http://es5.github.com/#x15.9.5.44
//This function provides a String representation of a Date object for use by
//JSON.stringify (15.12.3).
var dateToJSONIsSupported = false;
try {
dateToJSONIsSupported = (
Date.prototype.toJSON &&
new Date(NaN).toJSON() === null &&
new Date(negativeDate).toJSON().indexOf(negativeYearString) !== -1 &&
Date.prototype.toJSON.call({ // generic
toISOString: function () {
return true;
}
})
);
} catch (e) {
}
if (!dateToJSONIsSupported) {
Date.prototype.toJSON = function toJSON(key) {
// When the toJSON method is called with argument key, the following
// steps are taken:
// 1. Let O be the result of calling ToObject, giving it the this
// value as its argument.
// 2. Let tv be toPrimitive(O, hint Number).
var o = Object(this),
tv = toPrimitive(o),
toISO;
// 3. If tv is a Number and is not finite, return null.
if (typeof tv === "number" && !isFinite(tv)) {
return null;
}
// 4. Let toISO be the result of calling the [[Get]] internal method of
// O with argument "toISOString".
toISO = o.toISOString;
// 5. If IsCallable(toISO) is false, throw a TypeError exception.
if (typeof toISO != "function") {
throw new TypeError("toISOString property is not callable");
}
// 6. Return the result of calling the [[Call]] internal method of
// toISO with O as the this value and an empty argument list.
return toISO.call(o);
// NOTE 1 The argument is ignored.
// NOTE 2 The toJSON function is intentionally generic; it does not
// require that its this value be a Date object. Therefore, it can be
// transferred to other kinds of objects for use as a method. However,
// it does require that any such object have a toISOString method. An
// object is free to use the argument key to filter its
// stringification.
};
}
//ES5 15.9.4.2
//http://es5.github.com/#x15.9.4.2
//based on work shared by Daniel Friesen (dantman)
//http://gist.github.com/303249
if (!Date.parse || "Date.parse is buggy") {
// XXX global assignment won't work in embeddings that use
// an alternate object for the context.
Date = (function(NativeDate) {
// Date.length === 7
function Date(Y, M, D, h, m, s, ms) {
var length = arguments.length;
if (this instanceof NativeDate) {
var date = length == 1 && String(Y) === Y ? // isString(Y)
// We explicitly pass it through parse:
new NativeDate(Date.parse(Y)) :
// We have to manually make calls depending on argument
// length here
length >= 7 ? new NativeDate(Y, M, D, h, m, s, ms) :
length >= 6 ? new NativeDate(Y, M, D, h, m, s) :
length >= 5 ? new NativeDate(Y, M, D, h, m) :
length >= 4 ? new NativeDate(Y, M, D, h) :
length >= 3 ? new NativeDate(Y, M, D) :
length >= 2 ? new NativeDate(Y, M) :
length >= 1 ? new NativeDate(Y) :
new NativeDate();
// Prevent mixups with unfixed Date object
date.constructor = Date;
return date;
}
return NativeDate.apply(this, arguments);
};
// 15.9.1.15 Date Time String Format.
var isoDateExpression = new RegExp("^" +
"(\d{4}|[+-]\d{6})" + // four-digit year capture or sign +
// 6-digit extended year
"(?:-(\d{2})" + // optional month capture
"(?:-(\d{2})" + // optional day capture
"(?:" + // capture hours:minutes:seconds.milliseconds
"T(\d{2})" + // hours capture
":(\d{2})" + // minutes capture
"(?:" + // optional :seconds.milliseconds
":(\d{2})" + // seconds capture
"(?:\.(\d{3}))?" + // milliseconds capture
")?" +
"(" + // capture UTC offset component
"Z|" + // UTC capture
"(?:" + // offset specifier +/-hours:minutes
"([-+])" + // sign capture
"(\d{2})" + // hours offset capture
":(\d{2})" + // minutes offset capture
")" +
")?)?)?)?" +
"$");
var months = [
0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 365
];
function dayFromMonth(year, month) {
var t = month > 1 ? 1 : 0;
return (
months[month] +
Math.floor((year - 1969 + t) / 4) -
Math.floor((year - 1901 + t) / 100) +
Math.floor((year - 1601 + t) / 400) +
365 * (year - 1970)
);
}
// Copy any custom methods a 3rd party library may have added
for (var key in NativeDate) {
Date[key] = NativeDate[key];
}
// Copy "native" methods explicitly; they may be non-enumerable
Date.now = NativeDate.now;
Date.UTC = NativeDate.UTC;
Date.prototype = NativeDate.prototype;
Date.prototype.constructor = Date;
// Upgrade Date.parse to handle simplified ISO 8601 strings
Date.parse = function parse(string) {
var match = isoDateExpression.exec(string);
if (match) {
// parse months, days, hours, minutes, seconds, and milliseconds
// provide default values if necessary
// parse the UTC offset component
var year = Number(match[1]),
month = Number(match[2] || 1) - 1,
day = Number(match[3] || 1) - 1,
hour = Number(match[4] || 0),
minute = Number(match[5] || 0),
second = Number(match[6] || 0),
millisecond = Number(match[7] || 0),
// When time zone is missed, local offset should be used
// (ES 5.1 bug)
// see https://bugs.ecmascript.org/show_bug.cgi?id=112
offset = !match[4] || match[8] ?
0 : Number(new NativeDate(1970, 0)),
signOffset = match[9] === "-" ? 1 : -1,
hourOffset = Number(match[10] || 0),
minuteOffset = Number(match[11] || 0),
result;
if (
hour < (
minute > 0 || second > 0 || millisecond > 0 ?
24 : 25
) &&
minute < 60 && second < 60 && millisecond < 1000 &&
month > -1 && month < 12 && hourOffset < 24 &&
minuteOffset < 60 && // detect invalid offsets
day > -1 &&
day < (
dayFromMonth(year, month + 1) -
dayFromMonth(year, month)
)
) {
result = (
(dayFromMonth(year, month) + day) * 24 +
hour +
hourOffset * signOffset
) * 60;
result = (
(result + minute + minuteOffset * signOffset) * 60 +
second
) * 1000 + millisecond + offset;
if (-8.64e15 <= result && result <= 8.64e15) {
return result;
}
}
return NaN;
}
return NativeDate.parse.apply(this, arguments);
};
return Date;
})(Date);
}
//ES5 15.9.4.4
//http://es5.github.com/#x15.9.4.4
if (!Date.now) {
Date.now = function now() {
return new Date().getTime();
};
}
//
//String
//======
//
//ES5 15.5.4.14
//http://es5.github.com/#x15.5.4.14
//[bugfix, chrome]
//If separator is undefined, then the result array contains just one String,
//which is the this value (converted to a String). If limit is not undefined,
//then the output array is truncated so that it contains no more than limit
//elements.
//"0".split(undefined, 0) -> []
if("0".split(void 0, 0).length) {
var string_split = String.prototype.split;
String.prototype.split = function(separator, limit) {
if(separator === void 0 && limit === 0)return [];
return string_split.apply(this, arguments);
}
}
//ECMA-262, 3rd B.2.3
//Note an ECMAScript standart, although ECMAScript 3rd Edition has a
//non-normative section suggesting uniform semantics and it should be
//normalized across all browsers
//[bugfix, IE lt 9] IE < 9 substr() with negative value not working in IE
if("".substr && "0b".substr(-1) !== "b") {
var string_substr = String.prototype.substr;
/**
* Get the substring of a string
* @param {integer} start where to start the substring
* @param {integer} length how many characters to return
* @return {string}
*/
String.prototype.substr = function(start, length) {
return string_substr.call(
this,
start < 0 ? ((start = this.length + start) < 0 ? 0 : start) : start,
length
);
}
}
//ES5 15.5.4.20
//http://es5.github.com/#x15.5.4.20
var ws = "x09x0Ax0Bx0Cx0Dx20xA0u1680u180Eu2000u2001u2002u2003" +
"u2004u2005u2006u2007u2008u2009u200Au202Fu205Fu3000u2028" +
"u2029uFEFF";
if (!String.prototype.trim || ws.trim()) {
// http://blog.stevenlevithan.com/archives/faster-trim-javascript
// http://perfectionkills.com/whitespace-deviations/
ws = "[" + ws + "]";
var trimBeginRegexp = new RegExp("^" + ws + ws + "*"),
trimEndRegexp = new RegExp(ws + ws + "*$");
String.prototype.trim = function trim() {
if (this === undefined || this === null) {
throw new TypeError("can't convert "+this+" to object");
}
return String(this)
.replace(trimBeginRegexp, "")
.replace(trimEndRegexp, "");
};
}
//
//Util
//======
//
//ES5 9.4
//http://es5.github.com/#x9.4
//http://jsperf.com/to-integer
function toInteger(n) {
n = +n;
if (n !== n) { // isNaN
n = 0;
} else if (n !== 0 && n !== (1/0) && n !== -(1/0)) {
n = (n > 0 || -1) * Math.floor(Math.abs(n));
}
return n;
}
function isPrimitive(input) {
var type = typeof input;
return (
input === null ||
type === "undefined" ||
type === "boolean" ||
type === "number" ||
type === "string"
);
}
function toPrimitive(input) {
var val, valueOf, toString;
if (isPrimitive(input)) {
return input;
}
valueOf = input.valueOf;
if (typeof valueOf === "function") {
val = valueOf.call(input);
if (isPrimitive(val)) {
return val;
}
}
toString = input.toString;
if (typeof toString === "function") {
val = toString.call(input);
if (isPrimitive(val)) {
return val;
}
}
throw new TypeError();
}
//ES5 9.9
//http://es5.github.com/#x9.9
var toObject = function (o) {
if (o == null) { // this matches both null and undefined
throw new TypeError("can't convert "+o+" to object");
}
return Object(o);
};
});
이 라이브러리가 있습니다. 브라우저가 ECMAScript5를 지원하지 않았음에도 불구하고 API를 사용할 수 있습니다. 새로운 ECMAScript5 함수를 미리 배울 수 있습니다.
코드:
https:
//github.com/kriskowal/es5-shim
관련 협의를 준수하도록 옮겨 주십시오.
이 내용에 흥미가 있습니까?
현재 기사가 여러분의 문제를 해결하지 못하는 경우 AI 엔진은 머신러닝 분석(스마트 모델이 방금 만들어져 부정확한 경우가 있을 수 있음)을 통해 가장 유사한 기사를 추천합니다:
Vue.js의 v-for로 분할 할당의 v-for 지시어로 과 같은 것을 하고 싶었습니다만, 「Vue.js 분할 대입」이나 「v-for 분할 대입」과 같이 검색해도 히트하지 않고 , 영어에서 "Vue.js Destructuring assignment"...
텍스트를 자유롭게 공유하거나 복사할 수 있습니다.하지만 이 문서의 URL은 참조 URL로 남겨 두십시오.
CC BY-SA 2.5, CC BY-SA 3.0 및 CC BY-SA 4.0에 따라 라이센스가 부여됩니다.