W3School TIY Editor
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<!DOCTYPE html> <html> <head> <script> function insRow(id) { var x = document.getElementById(id).insertRow(0); var y = x.insertCell(0); var z = x.insertCell(1); y.innerHTML = z.innerHTML = "New"; } </script> </head> <body> <table id="myTable" style="border: 1px solid black"> <tr> <td>Row1 cell1</td> <td>Row1 cell2</td> </tr> <tr> <td>Row2 cell1</td> <td>Row2 cell2</td> </tr> <tr> <td>Row3 cell1</td> <td>Row3 cell2</td> </tr> </table> <p> <input type="button" onclick="insRow('myTable')" value="插入行"> </p> </body> </html>