Question

我有一个包含此代码的复选框

<td align="right">Include In Top Sellers?</td>
                          <td>
                            <input type="hidden" name="include_top"
                            value="0"><input type="checkbox"
                            name="include_top"
                            id="include_top"
                            value="1" <?php echo (($_POST["include_top"] == "1") or ($res["include_top"] == "1")) ? "checked='checked'" : ""; ?>
                            autocomplete="off"/>
                          </td>
                        </tr>

我需要默认选中此复选框，但也可以取消选中此复选框，并在保存时保持未选中状态。

Answer 1

这是如何从选中的复选框开始

＆＃13;

<input type="checkbox" checked>Checkbox</input>

＆＃13;

Answer 2

从isset PHP激活jquery

例如：

<script type="text/javascript">function uncheck(){$(#includ_top).attr('checked', false)}</script>
if(isset($_POST['submit']))
{<script>uncheck();</script>}

Answer 3

您不能拥有2个同名include_top的输入元素。
输出您的$_POST["include_top"]和$res["include_top"]，看看哪一个条件为真。

示例代码如下：

                      <td>
                        <!--input type="hidden" name="include_top"
                        value="0"-->
                       <?php var_dump($_POST["include_top"], $res["include_top"]); ?>
                        <input type="checkbox"
                        name="include_top"
                        id="include_top"
                        value="1" <?php echo (($_POST["include_top"] == "1") or ($res["include_top"] == "1")) ? "checked='checked'" : ""; ?>
                        autocomplete="off"/>
                      </td>

如果您希望默认为true，则应该更好地反复检查：

<?php echo (($_POST["include_top"] != "1") and ($res["include_top"] != "1")) ? "" : "checked='checked'"; ?>

默认情况下，如果未选中，则复选框保持未选中状态

3 个答案: