JS gets the implementation code for the selected TEXT and Value in the drop down list

2020-03-30 01:20:24
OfStack

As follows:


<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title> Headless document </title>
<script type="text/javascript">
function selChange(){
    var sel=document.getElementById('sel');    
    alert(sel.options[sel.selectedIndex].text);
    alert(sel.options[sel.selectedIndex].value);
}
</script>
</head>
<body>
<select id="sel" onchange="selChange()" >
<option value="zhangsan"> Zhang SAN </option>
<option value="lisi" > Li si </option>
<option value="wangwu" > Cathy </option>
</select>
</body>
</html>