Javascript function from array

Question

I have an array of strings which define class names. I would like to instantiate these classes using the string name. I have tried to use window but I haven't been able to do it.

The structure is

var objects = ['string1', 'string2'];

So the window would look like

window [
    objects [
        'string1',
        'string2'    
    ]
]

I have tried:

new window['objects'][0];

But that threw the string is not a func error.

Anyone know how to do this?

Thanks

window is a reserved word in javascript, why are you using it? — Ryan
– Ryan, Commented Mar 5, 2013 at 20:17
@ryan: window is definitely not a reserved word. Seems clear that OP is making reference to the global object,. — the system
– the system, Commented Mar 5, 2013 at 20:21

SLaks · Accepted Answer · 2013-03-05 20:16:12Z

2

window.objects[0] is a string.
You want to get the property of window named by that string:

window[window.objects[0]]

answered Mar 5, 2013 at 20:16

SLaks

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6 Comments

mellamokb Over a year ago

What does that have to do with creating objects by string name?

Dave Over a year ago

he means you can do new window[window.objects[0]]( )

Dave Over a year ago

...although new window[objects[0]]( ) is shorter and just as good

Cjmarkham Over a year ago

hm, i tried window[window.objects[0]] and also window[objects[0]] and they both came back as undefined

Cjmarkham Over a year ago

window[window.objects[0]] would return window['string1'] which doesn't exist since it's in the objects array of window

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