• 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 {
    	 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>
    
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  • 原文地址:https://www.cnblogs.com/toSeeMyDream/p/6022788.html
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