在这样的表中：
- <table>
- <!-- Insert Row of bun here -->
- <tr id="meat">
- <td>Hamburger</td>
- </tr>
- <!-- Insert Row of bun here -->
- </table>
- function AddBefore(rowId){}
- function AddAfter(rowId){}
解决方法
使用
- function AddBefore(rowId){
- var target = document.getElementById(rowId);
- var newElement = document.createElement('tr');
- target.parentNode.insertBefore(newElement,target);
- return newElement;
- }
- function AddAfter(rowId){
- var target = document.getElementById(rowId);
- var newElement = document.createElement('tr');
- target.parentNode.insertBefore(newElement,target.nextSibling );
- return newElement;
- }
