prototype 常用方法
//函数名称:
//作 者:
//功能说明: 扩展string方法
//输入参数:
//输出参数:
//创建日期:
//=====================================================================
//此处为string类添加三个成员
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,""); }
String.prototype.replaceAll = function(s1, s2) {
return this.replace(new RegExp(s1, "gm"), s2);
}
String.prototype.realLength = function() {return this.replace(/[^/x00-/xff]/g,"**").length; }
//Example: var arr=[1,2,3]; var isExists= arr.in_array( 1 );
Array.prototype.in_array = function(e) {
for (i = 0; i < this.length && this[i] != e; i++);
return !(i == this.length);
}