주말 에 정규 를 복습 했다

35104 단어 정칙
//      JS    ,       ,           ,        。
<!
DOCTYPE html> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <title></title> </head> <script> window.onload = function() { var arrDiv = Array.prototype.slice.call(document.querySelectorAll("div")), len = arrDiv.length; while( len ) { len--; window[arrDiv.id] = arrDiv[len] }; }; </script> <body> // ; <script> var str = "sdfsdf2,2424sdfsdf00234"; var arrResult = []; for(var i= 0, len = str.length ;i < len ; i++) { if( Number(str[i]) != Number(str[i]) ) continue; arrResult.push( str[i] ); }; console.log(" " , arrResult ); var arr = str.split(/[\D]?/gi); arr = arr.filter(function(e){ return e !== ""; }); /* arr.ap(function(e){ return e !== ""; }); */ console.log(" ",arr ); console.log(" ; "); console.log( str.match(/\d+/g) ); console.log(" !"); var arrResult = [], tmp = []; for(var i= 0, len = str.length ;i < len ; i++) { if( Number(str[i]) != Number(str[i]) ) continue; tmp.push( str[i] ); if( Number(str[i+1]) !== Number(str[i+1]) ) { arrResult.push( tmp.join("") ); tmp = []; }; }; console.log( arrResult ); </script> // HTML ; <div id="reg"> <span> sdfsd; <span>sdfsdfsdf</span> </span> </div> <script> var eEl = document.getElementById("reg"), reg = /<[^<]+>/gi; // ; console.log( eEl.innerHTML ); console.log( eEl.innerHTML.replace(reg,"") ); </script> // ; <input> <br> <input> <script> var aInpts = document.querySelectorAll("input"), regC = /[^\u4e00-\u9fa5]/gi; aInpts[0].addEventListener("input",function() { aInpts[1].value = this.value.replace(regC,function($$) { return ""; }); }, false); </script> <div id="www"> <span> :</span> <input id="www1"> <br> <span> :</span> <div id="www2"></div> </div> <script> var reg = /[a-zA-Z]+:\/\/[^\s]*/gi; www1.addEventListener("input",function() { www2.innerHTML = reg.test( this.value ); }); </script> <div id=" QQ "> <span> QQ :</span> <input id="qq_input"> <br> QQ ; <span id="is_qq"></span> </div> <script> var regQ = /^[1-9][0-9]{4,10}$/g; qq_input.addEventListener("input",function() { is_qq.innerHTML = regQ.test(this.value) }); </script> <div id="date"> <span> - .</span> <br> <input id="data1"> <br> <div id="data_result"></div> </div> <script> data1.addEventListener("input",function() { data_result.innerHTML = this.value.replace(/(?:\d)-/g,function($1) { return $1.slice(0,1)+"."; }); }, false); </script> <div id=""> <span> :</span><br> <input id="str_input"> <div id="all_str"></div> </div> <script> str_input.addEventListener("input", function() { all_str.innerHTML = this.value.replace(/[^a-zA-Z]/g,function($1) { return ""; }); }, false); </script> <div> <span> -:</span><br> <input id="repeat"> <div id="repeat_div"></div> </div> <script> repeat.addEventListener("input", function() { repeat_div.innerHTML = this.value.replace(/(\w+)([\w]+)(\1)/gi,function($all,$1,$2,$3){ return $1+"_"+$3; }); }, false); /* * * {4,7} 4 , * {4,} * {4} * + === {1,} * * === {0,} * ? === {0,1} 0 * * / </script> </body> </html>

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