<body>
<table>
<tbody id="mygird">
<tr><td>adf</td></tr>
</tbody>
</table>
<script>
var tr = mygird.insertRow(1);
td = tr.insertCell(0)
td.innerText = "new"
</script>
<table>
<tbody id="mygird">
<tr><td>adf</td></tr>
</tbody>
</table>
<script>
var tr = mygird.insertRow(1);
td = tr.insertCell(0)
td.innerText = "new"
</script>
FRAMESET,HTML, HEAD, TABLE, TBODY, TFOOT, THEAD, TITLE, and TR 对象是只读的.
所以.会出错.
The innerHTML property is read-only on the FRAMESET, HTML, HEAD, TABLE, TBODY, TFOOT, THEAD, TITLE, and TR objects.