W3School TIY
编辑您的代码：
<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" onclick="cell()" value="显示第一个单元"> </body> </html>
查看结果: