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select动态增加option

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" 

"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">

<head>

<title>option creation</title>



<meta http-equiv="Content-Type"
	content="application/xhtml+xml; charset=utf-8" />



<style type="text/css">

/*<![CDATA[*/
body {
	background-color: #ddd;
}

#container {
	width: 400px;
	text-align: center;
	padding: 20px 0px;
	border: 3px double #000;
	background-color: #ccc;
	margin: 30px auto;
}

/*//]]>*/
</style>



<script type="text/javascript">

//<![CDATA[

 

  var opts=3  /*number of original options*/

  var df=document.forms;

 

function optionAdd(num) { 

 

   opts=opts+num;

   df[0][0].options.length=opts;

   df[0][0].options[opts-1].innerHTML=df[0][1].value;

   df[0][1].value=""

 }

 

//]]>

</script>



</head>

<body>



	<form action="#">



		<div id="container">

			<select>

				<option>- - - - - - - -</option>

				<option>option one</option>

				<option>option two</option>

			</select> <input type="text" /> <input type="button" value="new option"
				onclick="optionAdd(1)" />

		</div>



	</form>



</body>

</html>

 

posted on 2016-11-02 14:21  nickTimer  阅读(167)  评论(0编辑  收藏  举报