點(diǎn)擊按鈕時沒有反應(yīng)？
<!DOCTYPE HTML>
<html>
<head>
<script type="text/javascript">
function getnum(){
? var mynode=document.getElementsByName(myt);??
? alert(mynode.length);
}
</script>
</head>
<body>
<input name="myt" type="text" value="1">
<input name="myt" type="text" value="2">
<input name="myt" type="text" value="3">
<input name="myt" type="text" value="4">
<input name="myt" type="text" value="5">
<input name="myt" type="text" value="6">
<br />
<input type="button" onclick="getnum()" value="看看有幾項(xiàng)？" />
</body>
</html>
2019-08-31