一些实用的正则和方法

获取长连接Url参数代码如下： function parse_url(url){ var pattern = /(/w+)=([^/#&]*)/ig; var parames = {};

获取长连接Url参数代码如下：

function parse_url(url){    var pattern = /(/w+)=([^/#&]*)/ig;    var parames = {};    url.replace(pattern, function(attr, key, value){        parames[key] = decodeURI(value);    });    return parames;}

/** * @param {string} url, 需要解析的url，必传 * @param {string} name, 需要获取的参数名，必传 * @returns */function getUrlParam(url, name) {    var reg = new RegExp("(^|&)" + name + "=([^&]*)(&|$)"); //构造一个含有目标参数的正则表达式对象    var r = url.split('?')[1].substr(1).match(reg); //匹配目标参数    if (r != null) return unescape(r[2]);    return null; //返回参数值}var url = 'http://union.bokecc.com/player?vid=107B4753B007A47D9C33DC5901307461&siteid=29639E609A1142B0&autoStart=true&width=100%&height=100%&playerid=2025478528BA86BE&playertype=1';console.log(getUrlParam(url, 'autoStart'));  // trueconsole.log(getUrlParam(url, 'width')); // 100%

 

获取Email前缀变成username代码如下：

var email = "[email protected]"var username = email.replace(/(.*)@.*/,"$1");

js实现千位分隔符代码如下:

function commafy(num) {     num = num + '';     var reg = /(-?d+)(d{3})/;    if(reg.test(num)){     num = num.replace(reg, '$1,$2');    }    return num;}

gulp 怎么能把js里面的中文转Unicode

var fs = reuqire('fs');var msg = fs. readFileSync('xx.js','utf-8');var unicode = new Buffer(msg, ‘uCS2’);var unicodeHex = “”;for (var i = 0; i < unicode.length; i = i + 2) {	unicodeHex += utils.toHex(unicode[i]) +	utils.toHex(unicode[i + 1]);}

input禁止输入除了数字意外的字符
 

<input type="text" onkeyup="this.value=this.value.replace(/[^0-9]/g,'')" onafterpaste="this.value=this.value.replace(/[^0-9]/g,'')">