select an option in a dropdown menu

[kkroo]

Hello,
Is there a way javascript can select an option in a dropdown by giving its value?

example:

in this dropdown:

<select name="choices" size="1">
<option value="choice1">Choice 1</option>
<option value="choice2">Choice 2</option>
<option value="choice3">Choice 3</option>
</select>

I would like javascript to do this:

make an option in the dropdown "choices" selected where the value is = choice2

Thanks

[Twey]

Not directly by value, no. Try this:

function selectValueFromSelect(/*HTMLSelectElement*/ sel, /*String*/ val) {
  for(var i=0;sel.options[i].value != val;i++) void(0);
  sel.selectedIndex = i;
}

[kkroo]

i am a javascript noob, so could you please show me an example?

[Twey]

Of how to use the function? Of course...

selectValueFromSelect(document.getElementsByName("choice")[0], "choice2");

Better than document.getElementsByName() would be to use the forms and elements collections.

[kkroo]

Thank you a lot, that worked great