Concat Some Arrays Together From A String

Jan 21, 2009

I have a string - comma separated - of array names. e.g.
var stringname = "array_one, array_two, array_three, array_four";
And I want to merge all the arrays named in the string into one big array.
(The string is produced via PHP as the exact arrays to merge may vary).
I've tried
var comboarray = comboarray.concat(eval(stringname));
But the eval()sn't working as I want!

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Feb 19, 2011

I'm trying to concatenate two arrays but it doesn't work.

The code looks like

Code:

And the console output looks like:

Code:

But I was expecting:

Code:

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Would it be possible to make besttest[1] arrays value an actual variable name and assign it string value "selected"? I have "for" loop that returns the selected state and I need to somehow pass that variable name (which has value "selected") to option tag. And that variable name is the actual value of array.

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====================================
<script>
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}
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<html stuff>

<script>
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