JavaScript去除空格的三种方法 (trim),RepleaceAll

String.prototype.Trim = function() { return this.replace(/(^\s*)|(\s*$)/g, ""); }  String.prototype.LTrim = function() { return this.replace(/(^\s*)/g, ""); }  String.prototype.RTrim = function() { return this.replace(/(\s*$)/g, ""); }str.replace(new RegExp(oStr, "gm"), nStr);