javaScript实现类似java的Map（没有映射）

lmap = function() {

	this.keys = new Array();

	this.values = new Array();

};



lmap.prototype = {

	put : function(key, value) {

		if (!key)

			throw 'your key is not valid';

		for (index in this.values) {

			if (this.values[index] == null) {

				this.keys[index] = key;

				this.values[index] = value;

				return;

			}

		}

		this.keys[this.keys.length] = key;

		this.values[this.values.length] = value;



	},

	getByKey : function(key) {

		if (!key)

			throw 'your key is not valid';

		var index = this.getIndex(key);

		if (index != -1)

			return this.values[index];

		return 'no value for thisKey';

	},

	getCount : function() {

		return this.keys.length;

	},

	remove : function(key) {

		if (!key)

			throw 'your key is not valid';

		for (index in this.keys) {

			if (this.keys[index] == key)

				this.keys[index] = null;

			this.values[index] = null;

		}

	},

	contains : function(value) {

		if (!value)

			throw 'your value is not valid';

		for (index in this.values) {

			if (this.values[index] == value)

				return true;

		}

		return false;

	},

	clear : function() {

		this.keys = new Array();

		this.values = new Array();

	},

	getIndex : function(key) {

		if (!key)

			throw 'your key is not valid';

		for (index in this.keys) {

			if (this.keys[index] == key)

				return index;

		}

		return -1;

	}

};



var theTestMap = new lmap();



theTestMap.put(1, "a");

theTestMap.put(2, "b");

theTestMap.put(456, "c");

theTestMap.put(546, "d");

theTestMap.put("STRING", "e");



var theMapTestInfo = document.createElement("div");

theMapTestInfo.innerHTML += 'theTestMap.put(1, "a");<br>'

		+ 'theTestMap.put(2, "b");<br>' + 'theTestMap.put(456, "c");<br>'

		+ 'theTestMap.put(546, "d");<br>'

		+ 'theTestMap.put("STRING", "e");<br>';

theMapTestInfo.innerHTML += "theTestMap.getByKey(546)===>"

		+ theTestMap.getByKey(546);

theMapTestInfo.innerHTML += "<br>theTestMap.contains(\"b\")===>"

		+ theTestMap.contains("b");

theMapTestInfo.innerHTML += "<br>theTestMap.getIndex(theKey.sad)===>"

		+ theTestMap.getIndex("STRING");

document.body.appendChild(theMapTestInfo);

　　



 

　　明天去公司要用，希望不要有问题啊