JavaScript模拟的HashMap，请大家多多提意见！

Posted 2023-02-18 ycyk_168

/**
 * V1.0
 * HashMap javascript版
 * 2013-09-04
 
 * 		var map = new $.HashMap();
    		map.put("age","20");
    		map.put("name","yk1");
    		alert(map.get("age"));
    		alert(map.toString());
    		
    		map = new $.HashMap("username":"ycyk_168","password":"123456");
    		map.put("age","20");
    		map.put("name","yk1");
    		alert(map.get("username"));
    		alert(map.get("password"));
    		alert(map.get("age"));
    		alert(map.get("name"));
    		alert(map.toString());
 *
 */
jQuery.HashMap = function(param) 
	var _map = typeof(param)=="undefined" ? [] : [param];
	/**
	 * 向HashMap中添加数据
	 */
	_map.put =  function(key,value)
		this[0][key] = value;
	;
	
	/**
	 * 从HashMap中获取指定的Key的值
	 */
	_map.get = function(key)
		return this[0][key];
	;
	
	/**
	 * HashMap中是否包含指定的Key
	 */
	_map.containsKey = function(key)
		return this.get(key) == null ? false : true;
	;
	
	/**
	 * 从HshMap中删除Key
	 */
	_map.remove = function(key)
		delete this[0][key];
	;
	
	/**
	 * 获取HashMap的大小
	 */
	_map.size = function()
		var count = 0;
		for(var item in this[0])
			count ++;
		
		return count;
	;
	
	/**
	 * 将HashMap转换为string的数据
	 */
	_map.toString = function()
		var str = "";
		for(var item in this[0])
			str += ""+ item +":"+ this[0][item] +",";
		
		str = $.util.removeEnd(str,",") + "";
		return str;
	;
	
	/**
	 * 将HashMap转换为JSON格式的数据
	 */
	_map.toJson = function()
		return this[0];
	;
	return _map;
;