Preface

2324 단어

What Is Underscore?


Underscore.js is a JavaScript library supporting functional programming.

Getting Underscore


The Underscore website has the latest version of the library.

Using Underscore

_.times(4, function() {console.log("Major")});

// (console) Major
// (console) Major
// (console) Major
// (console) Major

var underscore = _.noConflict();

underscore.times(4, function() {console.log("Major")});

// (console) Major
// (console) Major
// (console) Major
// (console) Major

The Source Code for Functional JavaScript


Lemonad library and the official underscore-contrib library

Running the Code in This Book


The source code for Functional JavaScript is available on GitHub.

Notational Conventions

  • Avoid assigning variables more than once.
  • Do not use eval .
  • Do not modify core objects like Array and Function.
  • Favor functions over methods.
  • If a function is defined at the start of a project, then it should work in subsequent stages as well.
  • Functions of zero parameters are used to denote that the arguments don't matter.
  • In some examples, ... is used to denote that the surrounding code segments are being ignored.
  • Text like inst#method denotes a reference to an instance method.
  • I tend to restrict if/else statements to a single line per branch, so I prefer to avoid using curly brackets to wrap the blocks. This saves precious vertical space.
  • I like to use semicolons.

    • Whom Functional JavaScript Is Written For


    Anyone looking to learn more about functional programming.

    A Roadmap for Functional JavaScript


    Chapter 1, Introducing Functional JavaScript Chapter 2, First-Class Functions and Applicative Programming Chapter 3, Variable Scope and Closures Chapter 4, Higher-Order Functions Chapter 5, Function-Building Functions Chapter 6, Recursion Chapter 7, Purity, Immutability, and Policies for Change Chapter 8, Flow-Based Programming Chapter 9, Programming Without Class

    Conventions Used in This Book


    Using Code Examples


    ......
    정적 자술 파일 재생성
    이벤트 감청/이벤트 핸들 추가 정보

    좋은 웹페이지 즐겨찾기

    개발자 우수 사이트 수집

    개발자가 알아야 할 필수 사이트 100선 추천 우리는 당신을 위해 100개의 자주 사용하는 개발자 학습 사이트를 정리했습니다
    best100-homepage