如何在js中将对象放在HashMap中？

Question

I create Simple HashMap like this , but When I put an object into this map as a value , I can't call object's function when I get it from map , I find that the object was convert to string by toString function. So what should I do to put the object itself rather than a string into map?

var g_itemMap =
{
    put : function(key,value){this[key] = value},
    get : function(key){return this[key]},
    contains : function(key){return this.get(key) == null?false:true},
    remove : function(key){delete this[key]}
}

I put the object like this:

g_itemMap.put(1, object);

And get it:

var object = g_itemMap.get(1);

When I call it's function , it went wrong:

object.somefunction();

alert can display object:

[object BitmapItem]

Answer 1

This code looks like working for me. You can try this;

var g_itemMap =
{
    put : function(key,value){this[key] = value},
    get : function(key){return this[key]},
    contains : function(key){return this.get(key) == null?false:true},
    remove : function(key){delete this[key]}
}

var object =
{
    objectfunction: function(){
        console.log('objectfunction called')
    }
}


g_itemMap.put(1, object);
var o = g_itemMap.get(1);
o.objectfunction();

Fiddle link: http://jsfiddle.net/hCH8k/

Answer 2

var HashMap = new Object();
HashMap[Key1] = Obj1;
HashMap[Key2] = Obj2;

function get(k)
{
    console.log(HashMap[k]);
}

or simply you can use

var HashMap = {"Key1":"value1","Key2":"value2"}
function get(k)
{
   console.log(HashMap[k]);
}

Answer 3

If I try

var object = { a: function() { alert('b'); } };
var g_itemMap =
{
    put : function(key,value){this[key] = value},
    get : function(key){return this[key]},
    contains : function(key){return this.get(key) == null?false:true},
    remove : function(key){delete this[key]}
}
g_itemMap.put(1, object);
var object2 = g_itemMap.get(1);
object2.a();

does alert('b'), which looks correct, to me... :-)