javascript 写着玩！

;(function() {return window.Query = window.$ = (function() {try {var _this = {};/*** 循环数组或者名值对象*/_this.each = function(obj, callback, args) {if (_this.isObj(obj) && !args) {for (var idx in obj) {if (callback.call(obj[idx], idx, obj[idx]) === false) {break;}}} else {var idx = 0;for (var o = obj[idx]; idx < obj.length && (callback.call(o, idx, o) !== false); o = obj[++idx]) {}}return _this;}/***判断对象是数组还是名值对象* @param {Object} obj*/_this.isObj = function(obj) {return typeof obj == "object" && !(_this.isArray(obj)) ? true : false;}/***为本地对象添加合适的方法*/_this._addFunForLocalObject_ = function() {/***为数组添加indexof方法*/if (!Array.prototype.indexOf) {Array.prototype.indexOf = function(v) {for (var idx in this) {if (this[idx] === v)return idx;}return -1;}}/***为数组添加remove方法*/if (!Array.prototype.remove) {Array.prototype.remove = function(v) {var vidx = this.indexOf(v);if (vidx >= 0)this.splice(vidx, 1);}}/***为数组添加contain方法*/if (!Array.prototype.contain) {Array.prototype.contain = function(v) {var vidx = this.indexOf(v);if (vidx >= 0)return true;}}/***为所有的对象添加显示当前值的方法*/if (!Object.prototype.val) {Object.prototype.val = function() {return this.valueOf();}}/***为String对象添加转换为Int的方法*/if (!String.prototype.intVal) {String.prototype.intVal = function() {return parseInt(this);}}return _this;}();/***判断是否为数字*/_this.isNumber = function(v) {return !v || isNaN(v.valueOf()) ? false : ( typeof v.valueOf() === "number");}/***判断是否为数组*/_this.isArray = function(v) {return !v || !( v instanceof Array) ? false : true;}/***判断数组中所有的值是否全是数字*/_this.isNumberArray = function(v) {var a = true;for (var idx = 0; idx < v.length; idx++) {a = a && _this.isNumber(v[idx]);}return !v || !_this.isArray(v) ? false : a;}/***判断是否为字符串*/_this.isString = function(v) {return !v || ( typeof v.valueOf() !== "string") ? false : true;}/***判断是否为字符串*/_this.isBooblean = function(v) {return typeof v.valueOf() !== "boolean" ? false : true;}/***用于处理字符串拼接*/_this.StringBuffer = function() {this._strings_ = new Array;if (this._inited === undefined) {this.append = function(v) {this._strings_.push(v);}this.toString = function() {return this._strings_.join("");}this._inited = true;}}/***生成从vf到vl之间的随机数，isDecimal表示是否保留小数*/_this._protectRandom_ = function(vf, vl, isDecimal) {var n = Math.random() * (vl - vf + 1) + vf;return isDecimal ? n : Math.floor(n);}/***生成大于给定数字的随机数*/_this._gtRandom_ = function(v, isDecimal) {var n = Math.random() * v + v;return isDecimal ? n : Math.round(n);}/***生成小于给定数字的随机数*/_this._ltRandom_ = function(v, isDecimal) {var n = Math.random() * v;return isDecimal ? n : Math.round(n);}/***数组copy*/_this.arrCopy = function(src, target) {if (src && target) {_this.each(src, function(idx, o) {target[idx] = o;});return target;}}/***将参数转换为数组类型*/_this._argsToArray_ = function(v) {var result = new Arrayfor (var idx = 0; idx < v.length; idx++) {result.push(v[idx]);}return result;}/***生成随机数或者选出随机数*/_this.random = function() {var args = arguments;var length = args.length;if (length && length <= 1) {return _this.isArray(args[0]) ? args[0][_this._protectRandom_(0, args[0].length - 1)] : Math.random();} else {args = _this._argsToArray_(args);if (_this.isNumberArray(args)) {return length === 2 ? _this._protectRandom_(Math.min(args[0], args[1]), Math.max(args[0], args[1]), 1) : args[_this._protectRandom_(0, length - 1)];} else {var g = args.indexOf("gt") >= 0;var l = args.indexOf("lt") >= 0;var h = _this.isNumber(args[0]);var i = g && h;var m = l && h;if (length === 2) {return i ? _this._gtRandom_(args[0], 0) : m ? _this._ltRandom_(args[0], 0) : args[_this._protectRandom_(0, length - 1)];} else if (length === 3) {var f = _this.isBooblean(args[length - 1]);var d = _this.isNumberArray(args.slice(0, 2));return f && d ? _this._protectRandom_(Math.min(args[0], args[1]), Math.max(args[0], args[1]), args[2]) : f && i ? _this._gtRandom_(args[0], args[2]) : f && m ? _this._ltRandom_(args[0], args[2]) : args[_this._protectRandom_(0, length - 1)];} else {return args[_this._protectRandom_(0, length - 1)];}}}}window.$.prototype = _this;} catch(e) {}return _this;})();
})();