<html><head><script type="text/javascript">function cell() { var x=document.getElementById('myTable').rows[0].cells; alert(x[0].innerHTML); }</script></head><body>
<table id="myTable" border="1"><tr><td>cell 1</td><td>cell 2</td></tr><tr><td>cell 3</td><td>cell 4</td></tr></table><br /><input type="button" οnclick="cell()" value="显示第一个单元">
</body></html>
