为什么我的JavaScript中出现"悬停未定义"错误？

Question

这是怎么回事？它说"悬停未定义",但在我的jsFiddle中,代码工作正常:

<a href="#" onmouseover="hover(1);">click</a>
<div id="1"></div>

<script type="text/javscript">
function hover(x) {
    var id = x;
    var hoverBubble = document.getElementById(id);
    hoverBubble.innerHTML = "hello";
}
</script>

Answer 1

<script type="text/javscript">

那拼错了.它应该是javascript

<script type="text/javascript">