第一種方法使用Object實現：
<script type="text/javascript">
Map = function(){
this.obj = new Object();
this.put = function(key ,value)
{
this.obj[key] = value ;
}
this.size = function(){
var count = 0 ;
for( var attr in this.obj){
count++;
}
return count;
}
this.get = function(key)
{
if(this.obj[key] || this.obj[key] === 0 || this.obj[key] === null )
{
return this.obj[key];
//return this.obj.key;
}else{
return null;
}
}
this.remove = function(key){
if(this.obj[key] || this.obj[key] === 0 || this.obj[key] === null )
{
//delete this.obj[key];
}else{
return null;
}
}
this.eachMap = function(fn){
for(var attr in this.obj){
fn(attr,this.obj[attr]);
}
}
}
var map =new Map();
map.put('01', 'a');
map.put('02', 'b');
map.put('C', 'c');
map.put('D', 'd');
//alert(map.size());
//alert(map.get('C'));
//alert(map.get('C'));
//map.remove('01');
//alert(map.get('01'));
map.eachMap(function(key , value){
alert(key+" "+value);
});
</script>
第二種方法使用Array數組實現
<script type="text/javascript">
Map = function()
{
this.elements = new Array();
this.size = function()
{
return this.elements.length;
}
this.put = function(_key,_value)
{
this.elements.push({
key:_key,
value:_value
});
}
this.isEmpty = function()
{
var flag = true;
if(0==this.size())
{
flag = true;
}else
{
flag = false;
}
return flag;
}
this.clear = function()
{
this.elements = new Array();
}
this.remove = function(_key)
{
flag =false
try
{
for(var i=0;i<this.elements.length;i++)
{
if(this.elements[i].key == _key)
{
this.elements.splice(i,1);
}
}
flag = true;
}
catch (e)
{
flag = false;
}
return this.flag;
}
}
var map = new Map();
console.info(map);
alert(map.size());
map.put("hello","world");
map.put('world','welcome');
alert(map.size());
console.info(map);
alert(map.isEmpty());
console.info(document);
console.info(document.getElementById("myform"));
</script>
