<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>JSHashTable</title>
<script type=text/javascript>
function HashTable()
{
this.__hash = {};
this.Add = function(key,value)
{
if(typeof(key) != "undefined")
{
//if it not contains in hashtable
if(! this.contains(key))
{
this.__hash[key] = typeof(value) == "undefined" ? null : value;
return true;
}
else{
return false;
}
}
};
this.Remove = function(key){
delete this.__hash[key];
};
this.count = function(){
var i = 0;
for(var obj in this.__hash)
{
i++;
}
return i;
};
this.items = function(key){
return this.__hash[key];
};
this.contains = function(key){
return typeof(this.__hash[key]) != "undefined";
};
this.clear = function(){
for(var obj in this.__hash)
{
delete this.__hash[k];
}
};
}
var obj = new HashTable();
obj.Add("a");
obj.Add("b","b");
obj.Add("a");
obj.Remove("a");
alert(obj.contains("a"));
obj.Add("c","I love you");
alert(obj.items("c"));
</script>
</head>
<body>
</body>
</html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>JSHashTable</title>
<script type=text/javascript>
function HashTable()
{
this.__hash = {};
this.Add = function(key,value)
{
if(typeof(key) != "undefined")
{
//if it not contains in hashtable
if(! this.contains(key))
{
this.__hash[key] = typeof(value) == "undefined" ? null : value;
return true;
}
else{
return false;
}
}
};
this.Remove = function(key){
delete this.__hash[key];
};
this.count = function(){
var i = 0;
for(var obj in this.__hash)
{
i++;
}
return i;
};
this.items = function(key){
return this.__hash[key];
};
this.contains = function(key){
return typeof(this.__hash[key]) != "undefined";
};
this.clear = function(){
for(var obj in this.__hash)
{
delete this.__hash[k];
}
};
}
var obj = new HashTable();
obj.Add("a");
obj.Add("b","b");
obj.Add("a");
obj.Remove("a");
alert(obj.contains("a"));
obj.Add("c","I love you");
alert(obj.items("c"));
</script>
</head>
<body>
</body>
</html>
