Dynamically referencing Javascript Array name without using Eval?

Question

Given that EVAL is Evil how do I create an Array name dynamically:

I have a bunch of Arrays and I need to reference different ones depending on what the user clicks.

This bit of code gives me the array object:

(eval(calendarObject.id + '7'))

But eval is bad, so how to do I construct an Array name and then reference it?

Here's a bit more context:

if (jQuery.inArray(String(checkinDate.getTime()/1000), 
(eval(calendarObject.id + '7'))) == -1 ) { //do stuff };

Any ideas?

thanks.

Greg · Accepted Answer · 2009-07-02 08:41:12Z

5

It it's aglobal variable, it will be a property of the window object:

window[calendarObject.id + '7']

answered Jul 2, 2009 at 8:41

Greg

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3 Comments

annakata Over a year ago

I still can't work out what the OP wants, but I think you're closer

Quentin Over a year ago

Better to rewrite it so it is a property of a different object rather than leaving it as a global though.

firecall Over a year ago

@annakata - when my page is built via PHP it writes out a set of Arrays (ctg7, gdn7, twr7 and so on) I then need to access values from these depending on what the user clicks in the browser. Anyways, @Greg had the answer. Thank you very much :) @David Dorward - yes, I think I will, but it's working for now :)

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