<!--html代码:--> <tr> <th width='30'><input type='checkbox' id='selectall' onclick='getChanges();' /></th> </tr> <tr> <td><input type='checkbox' id=" a" name='cks' value=" a" /></td> <td><input type='checkbox' id=" b" name='cks' value=" b" /></td> <td><input type='checkbox' id=" c" name='cks' value=" c" /></td> <td><input type='checkbox' id=" d" name='cks' value=" d" /></td> <td><input type='checkbox' id=" e" name='cks' value=" e" /></td> </tr>
//js 代码: function getChanges() { var isChecked = $("#selectall").attr("checked"); //判断一个复选框是否被选中 if (isChecked) { $("[name='cks']").attr("checked", 'true'); //全选 } else { $("[name='cks']").removeAttr("checked"); //取消全选 } }