Javascript Regex筆記2

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<!DOCTYPE html><html xmlns="http://www.w3.org/1999/xhtml"><head>    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />    <title></title>    <script type="text/javascript">        window.onload = function () {            //注意正則加了g,就對正則屬性LastIndex屬性更改            var reg = /\d+/g;            var r1 = reg.test(‘12312shfskhdf‘);//false            console.log(r1);            console.log(reg.lastIndex);            var r2 = reg.test(‘sdfssdfsf123123‘);//true;            console.log(r2);            console.log(reg.lastIndex);            console.log("對比一下上下兩種寫法的區別");            console.log(reg.test(‘12312shfskhdf‘));            console.log(reg.lastIndex);            console.log(reg.test(‘sdfssdfsf123123‘));            console.log(reg.lastIndex);            var reg2 = /(\d)(\d)(\d)/;            var str = "97312shfskhdf";            reg2.test(str);            console.log(RegExp.$1);            console.log(RegExp.$2);            console.log(RegExp.$3);            var reg3 = /\d+/g;            var str3 = "dsf34753094sdfsdf";            var str31 = "dsfsdfsdfsdfsdfs345345345s";            console.log(str3.search(reg3));            console.log(str31.search(reg3));            //分解年月日時分秒            var str4 = ‘2015-7-7 22:59:11‘;            var result = str4.split(/-|[ ]+|:/);//按照減號 空格 冒號 分解            // var result = str4.split(/[ -:]/);//按照減號 空格 冒號 分解[]內必須是連續的            console.log(result);            var oldStr = "";            var str5 = ‘32453453455555555559999997263849‘;            var str6 = str5.replace(/(\d)\1/g, function (s1, s2, i, input) {                //s1整個正則捕獲的內容                //s2 第一個分組的內容                //console.log(s1);                //console.log(s2);                var newStr = s2;                if (newStr == oldStr) {                    return ‘‘;                } else {                    oldStr = s2;                    return s2;                }            });//連續重複出現的數字            console.log(str5);            console.log(str6);        }    </script></head><body></body></html>

　　

Javascript Regex筆記2