javascript 字符串常用操作(replaceAll,trim)

//全局文本替换String.prototype.replaceAll = function(s1,s2){   return this.replace(new RegExp(s1,"gm"),s2);}//去前后空格String.prototype.Trim = function(){return this.replace(/(^\s*)|(\s*$)/g, "");}//去前空格String.prototype.LTrim = function(){return this.replace(/(^\s*)/g, "");}//去后空格String.prototype.RTrim = function(){return this.replace(/(\s*$)/g, "");}//去除字符串中所有空格String.prototype.trimStr = function(){ return this.replace(/\s+/g, "");}