每次调用函数时,此代码都会向第一个生成的菜单追加一个额外的元素。所有后续调用中都缺少每个数组中的最后一个元素。我似乎无法弄清楚为什么会这样。
<script type="text/javascript" language="javascript">
var elements = ['one','two','three','etc'];
var positions = ['Producer', 'Tech', 'Assist', 'Voice'];
function addNamelist() {
var q = document.createElement('select');
for (var j=0; j<positions.length; j++) {
q.setAttribute('id', positions[j]);
document.body.appendChild(q);
var r = document.createElement('option');
r.setAttribute('value', positions[j]);
var m = document.createTextNode(positions[j]);
r.appendChild(m);
document.getElementById(positions[j]).appendChild(r);
}
var y = document.createElement('select');
for (var i = 0; i < elements.length; i++) {
y.setAttribute('id', elements[i]);
document.body.appendChild(y);
var z = document.createElement('option');
z.setAttribute('value', elements[i]);
var t = document.createTextNode(elements[i]);
z.appendChild(t);
document.getElementById(elements[i]).appendChild(z);
}
}
</script>
</head>
<body>
<form action="editpageentry.php"><form>
<a href="#" onclick="addNamelist()">create field</a>
</body>
</html>