能执行
<select id="url" onchange="alert(options[selectedIndex].value)" name="url">
<option value="0">否</option>
<option value="1">是</option>
</select>
-------------------------------------------------------------------------------------------------
<select id="url" onchange="url()" name="url">
<option value="0">否</option>
<option value="1">是</option>
</select>
<script language="javascript">
function url(){
var a=document.getElementById("url").options[selectedIndex].value
alert(a)
}
</script>
不能执行呢?
提示不支持此属性
<!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 content="text/html; charset=utf-8" http-equiv="Content-Type" />
<title>无标题 1</title>
<script type="text/javascript">
function url() {
var a = document.getElementById("url").value;
alert(a);
}
</script>
</head>
<body>
<select id="url" onchange="url()" name="url">
<option value="0">否</option>
<option value="1">是</option>
</select>
</body>
</html>
function url(){
var a=document.getElementById("url");
var str = a.options[a.selectedIndex].value;
alert(str)
}
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