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select.options as associative array

Posted on 2002-05-15
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Last Modified: 2009-12-16
I want to access the select.options collection as an associative array, but can't seem to get it to work, e.g.

<select>
<option id="option1" value="nar">blah
</select>
<script>
refToSelect.options["option1"].value= "hello";
</script>

As just about everything in JavaScript is an associative array, I thought this would work, but it doesn't.

Any ideas on how to make it work (and don't tell me to loop through the options and match - thats what I want to avoid).

Leon
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Question by:Astroman
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Expert Comment

by:knightEknight
ID: 7010997
document.getElementById("option1").value
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Expert Comment

by:knightEknight
ID: 7011005
<script>
document.getElementById("option1").value = "hello";
</script>
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Author Comment

by:Astroman
ID: 7011151
I know that strictly that works, but I'd prefer (from a code readability point of view) to reference it via the options, or at least the select object, so it's clear what the code is doing.

I guess I could do it using the children collection of select?

Cheers,

Leon
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Accepted Solution

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knightEknight earned 50 total points
ID: 7011179
yes, perhaps:

refToSelect.children.option1.value = "hello";
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Author Comment

by:Astroman
ID: 7011185
I'll leave this a bit longer, but I guess this is the best way. If so, I'll give you the points.  Thanks kek.

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Author Comment

by:Astroman
ID: 7011254
Dunno what to do now. Turns out my original post was correct, but my (SS generated) code had the element id as a number, which is wrong and was breaking it.

So the answer is, 'options' is an associative array (as I suspected), and I'm silly.

I'll give you the points, because someone should have them, and at least it got me debuggin it properly....
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LVL 33

Expert Comment

by:knightEknight
ID: 7011265
I see, I thought that it should have worked as you originally described it, but I just assumed not since you had tried it.  Oh well, thanks for the points, and for the exercise.
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LVL 1

Author Comment

by:Astroman
ID: 7011295
actually, I'm beginning to feel a complete fool. Having ( I thought) verified that it did actually work, it seems to have stopped working now.  I dunno. type first, think later today.

'children' works for sure, anyway, so I'm happy (ish)
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