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<html>
<head>
 	<title>Nhung rac roi ko hieu</title>
	<script type="text/javascript">
			function getvalue(list)
			{
			     while(list.options.length) list.options[list.selectedIndex].value=null;
			     var value = list.options[list.selectedIndex].value;
			     document.write(value);
			     document.bgColor = value;
			}
	</script>
</head>
<body bgColor="lavender">
		Here is the list for you to Change the bgColor!
		<br/>
		<select name="list1" onchange="getvalue(this)">
				<option value="green">Green</option>
				<option value="orange">Orange</option>
				<option value="yellow">Yellow</option>
				<option value="pink">Pink</option>
		</select>
</body>
</html>

Here is my code , it works but how can I do to remain the list each time click one option . I mean when I click one option the background changes, also the combo box is remainded to try the next option!
Please help me clarify the problem. Thanks!

you set the value to null then read it? Why are you using "while(list.options.length)"?

try this:

function getvalue(list)
{
document.getElementsByTagName("body")[0].bgColor=list.value;
}

you set the value to null then read it? Why are you using "while(list.options.length)"?

try this:

function getvalue(list)
{
document.getElementsByTagName("body")[0].bgColor=list.value;
}

Ok, ^^.Thank you very much!

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