<!
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 >
分类:
JS Collecion
本文转自Sam Lin博客博客园博客,原文链接:http://www.cnblogs.com/samlin/archive/2008/07/06/1236958.html,如需转载请自行联系原作者