I'm not quite sure I understand what you're meaning, but I'll take a stab at it.
If you have:
- <select name="selectBox"> <option>1</option> <option>2</otpion> </select>
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You could simply add an 'onchange' javascript function to the element.
- <select name="selectBox" onchange="myFunction();"> <option>1</option> <option>2</otpion> </select>
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The the <head> of your page you could put:
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<script type="text/javascript">
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myFunction(){
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document.getElementById('textfield').html = "New text!";
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}
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</script>
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So what's happening is that you set a javascript function do something to an element with the id of 'textfield'. What you told it to do is change the html (text) of that element.
When you make a selection with your SELECT element, the 'onchange' event is fired and does your javascript function.
I hope this is clear enough.
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