tools.js

//----------------------------------------------------------------------
// Map
function Map(){
    this.key = [];
    this.value = {};
}

Map.prototype.put = function(k, v){
    if (this.value[k] == null) 
        this.key.push(k);
    this.value[k] = v;
};

Map.prototype.get = function(k){
    return this.value[k];
};

Map.prototype.remove = function(k){
    delete this.value[k];
};

Map.prototype.size = function(){
    return this.key.length;
};

Map.prototype.toString = function(){
    var str = "";
    for (var prop in this.value) {
        str += "key: " + prop + "; value: " + this.value[prop] + "<br />";
    }
    return str;
};

Map.prototype.containsKey = function(k){
    if (this.value[k] !== undefined) 
        return true;
    return false;
};

Map.prototype.keyToArray = function(){
    var k = [];
    var i = 0;
    for (k[i++] in this.value) 
        ;
    return k;
};

Map.prototype.valueToArray = function(){
    var v = [];
    var i = 0;
    for (var prop in this.value) 
        v[i++] = this.value[prop];
    return v;
};

//----------------------------------------------------------------------
// 检测浏览器
// 调用check.browser();
// one
function B(){
}

B.b = function(){
    for (var i in navigator) {
        document.write("navigator." + i + " = " + navigator[i] + "<br />");
    }
};
// two
var check = {
	browser: function() {
		for (var i in navigator)
			document.write("navigator." + i + " = " + navigator[i] + "<br />");
	}
};

var Brower={
    // 判断是否为IE6浏览器 
    isIE6:function(){return navigator.userAgent.search('MSIE')>0&&navigator.userAgent.search('6')>0;}, 
    // 判断是否为IE浏览器
    isIE:function(){return navigator.userAgent.search('MSIE')>0;},
    // 判断是否为Opera浏览器
    isOpera:function(){return navigator.userAgent.indexOf('Opera')>-1;},
    // 判断是否为FireFox浏览器
    isMoz:function(){return navigator.userAgent.indexOf('Mozilla/5.')>-1;}
}

//----------------------------------------------------------------------
// 查看程序运行时间
function Timing(){
    this.startTime = 0;
    this.stopTime = 0;
    
    Timing.prototype.start = function(){
        this.startTime = new Date();
    };
    
    Timing.prototype.stop = function(){
        this.stopTime = new Date();
        return (this.stopTime.getTime() - this.startTime.getTime()) + 'ms';
    };
}

//----------------------------------------------------------------------
//函数和对象绑定
function bindMethod(obj, f){
    return function(){
        return f.apply(obj, arguments);
    }
}
//对象
var obj = {
    color: 'red'
};
//函数
function sayColor(str){
    document.write(str + this.color);
};

var fun = bindMethod(obj, sayColor);
fun('The color is: '); // The color is: red
//----------------------------------------------------------------------

/**
	 * Map类
	 */
	function Map() {
		this.entry = {};
		this.mapSize = 0;
	};
	
	Map.prototype = {
		put: function(key, value) {
			this.entry[key] = value;
			this.mapSize++;
		},
		
		get: function(key) {
			if(!this.isEmpty()) {
				return this.entry[key];
			}
			return null;
		},
		
		remove: function(key) {
			if(!this.isEmpty()) {
				delete this.entry[key];
				this.mapSize--;
			}
			return true;
		},
		
		clear: function() {
			if(!this.isEmpty()) {
				for(var prop in this.entry) {
					delete this.entry[prop];
				}
				this.mapSize = 0;
			}
		},
		
		removeThis: function() {
			for(var prop in this) { delete this[prop]; }
			this.mapSize = null;
		},
		
		containsKey: function(key) {
			if(typeof this.entry[key] !== "undefined") {
				return true;
			}
			return false;
		},
		
		size: function() {
			return this.mapSize;
		},
		
		isEmpty: function() {
			return this.mapSize == 0;
		},
		
		getEntry: function() {
			return this.entry;
		},
		
		toString: function() {
			var max = this.mapSize - 1;
			var buf = new StringBuffer();
			var i = 0;
			
			buf.append("{");
			for(var prop in this.entry) {
				buf.append(prop + "=" + this.entry[prop]);
				if(i < max) {
					buf.append(", ");
				}
				i++;
			}
			buf.append("}");
			return buf.toString();
		}
	};