<
script language
=
"
javascript
"
type
=
"
text/javascript
"
>
function Hashtable()
{
this
._hash
=
new
Object();
this
.add
=
function(key,value){
if
(typeof(key)
!=
"
undefined
"
){
if
(
this
.contains(key)
==
false
){
this
._hash[key]
=
typeof(value)
==
"
undefined
"
?
null
:value;
return
true
;
}
else
{
return
false
;
}
}
else
{
return
false
;
}
}
this
.remove
=
function(key){delete
this
._hash[key];}
this
.count
=
function(){var i
=
0
;
for
(var k 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 k in
this
._hash){delete
this
._hash[k];}}
}
var a
=
new
Hashtable();
a.add(
"
aa
"
);
a.add(
"
bb
"
,
2342
);
a.add(
"
bb
"
,
2342
);
a.remove(
"
aa
"
);
alert(a.count());
alert(a.contains(
"
bb
"
));
alert(a.contains(
"
aa
"
));
alert(a.items(
"
bb
"
));
</
script
>
