How to get the number of rows in a table?

forgod365

Ask everyone, I use object.innerHTML = '<table>' + '<tr>' + '<td>' + '</ td>' + '</ tr>' + '<tr>' + '<td > '+' </ td> '+' </ tr> '
Created a table with 2 rows and 1 column
How do I get the number of rows of a table in object.innerHTML?
There aren't many points, I'll fill it up when I have it!

xing_532

tabletest.rows.length

dogsday314

<script>
function doFunction(objId){
alert(document.getElementById(objId).getElementsByTagName("tr").length);
}
</script>
<table id="aa" onclick="doFunction('aa')" border="1">
<tr>
<td>fdsaf
</td>
</tr>
<tr>
<td>fdsaf
</td>
</tr>

</table>