[js 中常用的扩展方法] #js

tool.js

//添加数组的移除函数
Array.prototype.remove = function(from, to) {
    var rest = this.slice((to || from) + 1 || this.length);
    this.length = from < 0 ? this.length + from : from;
    return this.push.apply(this, rest);
};
//添加 indexOf 函数功能
Array.prototype.indexOf = function(val,name) {
    for (var i = 0; i < this.length; i++) {
        if(!name) {
            if(this[i] === val) return i;
        }else{
            if (eval('this[i]["'+name+'"]') == val) return i;
        }

    }
    return -1;
};

//全局替换
String.prototype.replaceAll = function(str,str2){
    return this.replace(new RegExp(str,"gm"),str2);
}