当点击一个按钮两次时，多个功能

Multiple Functions When Clicking a Button Twice

本文关键字：两次 功能 一个 按钮      更新时间：2023-09-26

所以我目前有一个表，我可以按下一个按钮和"停用"一行。通过取消激活该行，所发生的只是不透明度的变化，该行显示为灰色，表示该行已"取消激活"。"停用"按钮也变为"激活"。我想要的是能够然后点击"激活"按钮，并能够取消灰色行和按钮，然后变回"停用。"

这是我的一些代码…

HTML/PHP: 

<tr>
  <td class="mr_id" contenteditable="false"><?php echo intval ($rows['MR_ID'])?></td>
  <td class="mr_name" contenteditable="false"><?php echo $rows['MR_Name']?></td>
  <td class="buyer_id" contenteditable="false"><?php echo $rows['Buyer_ID']?></td>
  <td class="poc_n" contenteditable="false"><?php echo $rows['MR_POC_N']?></td>     
  <td class="poc_e" contenteditable="false"><?php echo $rows['MR_POC_E']?></td>
  <td class="poc_p" contenteditable="false"><?php echo $rows['MR_POC_P']?></td>
  <td><button class="edit" name="edit">Edit</button>
  <button class="deactivate" name="deactivate">Deactivate</button></td>
</tr>
JavaScript: 

// ----- Deactivate Row -----
$(document).ready(function() {
  $('.deactivate').click(function() {
    var $this = $(this);
    if ($this.html() === 'Deactivate') {
      $this.html('Activate');
      var result = confirm("Are you sure you want to deactivate this entry?");
      if(result) {
        $this.closest('tr').css('opacity', 0.5);
      }
    }
  });
});

要实现这一点，您只需要稍微重组您的逻辑，以在tr元素上合并一个类，可以用来表示它的活动状态。试试这个:

$(document).ready(function() {
  $('.deactivate').click(function() {
    var $this = $(this);
    var $tr = $this.closest('tr');
    var action = $tr.hasClass('deactivated') ? 'activate' : 'deactivate';
    if (confirm('Are you sure you want to ' + action + ' this entry?')) {
      $tr.toggleClass('deactivated');
      $this.text(function(i, t) {
        return t == 'Deactivate' ? 'Activate' : 'Deactivate';
      });
    }
  })
});
.deactivated {
  opacity: 0.5;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<table>
  <tr>
    <td class="mr_id" contenteditable="false">
      MR_ID
    </td>
    <td class="mr_name" contenteditable="false">
      MR_Name
    </td>
    <td class="buyer_id" contenteditable="false">
      Buyer_ID
    </td>
    <td class="poc_n" contenteditable="false">
      MR_POC_N
    </td>
    <td class="poc_e" contenteditable="false">
      MR_POC_E
    </td>
    <td class="poc_p" contenteditable="false">
      MR_POC_P
    </td>
    <td>
      <button class="edit" name="edit">Edit</button>
      <button class="deactivate" name="deactivate">Deactivate</button>
    </td>
  </tr>
  <tr>
    <td class="mr_id" contenteditable="false">
      MR_ID
    </td>
    <td class="mr_name" contenteditable="false">
      MR_Name
    </td>
    <td class="buyer_id" contenteditable="false">
      Buyer_ID
    </td>
    <td class="poc_n" contenteditable="false">
      MR_POC_N
    </td>
    <td class="poc_e" contenteditable="false">
      MR_POC_E
    </td>
    <td class="poc_p" contenteditable="false">
      MR_POC_P
    </td>
    <td>
      <button class="edit" name="edit">Edit</button>
      <button class="deactivate" name="deactivate">Deactivate</button>
    </td>
  </tr>
  <tr>
    <td class="mr_id" contenteditable="false">
      MR_ID
    </td>
    <td class="mr_name" contenteditable="false">
      MR_Name
    </td>
    <td class="buyer_id" contenteditable="false">
      Buyer_ID
    </td>
    <td class="poc_n" contenteditable="false">
      MR_POC_N
    </td>
    <td class="poc_e" contenteditable="false">
      MR_POC_E
    </td>
    <td class="poc_p" contenteditable="false">
      MR_POC_P
    </td>
    <td>
      <button class="edit" name="edit">Edit</button>
      <button class="deactivate" name="deactivate">Deactivate</button>
    </td>
  </tr>
  <tr>
    <td class="mr_id" contenteditable="false">
      MR_ID
    </td>
    <td class="mr_name" contenteditable="false">
      MR_Name
    </td>
    <td class="buyer_id" contenteditable="false">
      Buyer_ID
    </td>
    <td class="poc_n" contenteditable="false">
      MR_POC_N
    </td>
    <td class="poc_e" contenteditable="false">
      MR_POC_E
    </td>
    <td class="poc_p" contenteditable="false">
      MR_POC_P
    </td>
    <td>
      <button class="edit" name="edit">Edit</button>
      <button class="deactivate" name="deactivate">Deactivate</button>
    </td>
  </tr>
</table>

用类来代替是个好主意。因此，如果按钮/行是停用的，给它一个类，并在单击按钮时切换相同的

代码可能是这样的，

$('.deactivate').click(function() {
        var $this = $(this);
        var parentrow=$(this).parents('tr');
        if (parentrow.hasClass('deactivated')) {
            var result = confirm("Are you sure you want to activate this entry?");
            if (result) {
                $this.html('Deactivate');
                parentrow.css('opacity', 1);
            }
        } else {
            var result = confirm("Are you sure you want to deactivate this entry?");
            if (result) {
                $this.html('Activate');
                parentrow.css('opacity', 0.5);
            }
        }
        parentrow.toggleClass('deactivated');
});

在上面的代码中，我们首先检查row是否有称为deactivated的类，如果是，我们将询问用户是否他/她想再次激活它并相应地进行更改。

如果row没有称为deactivated的类，我们将要求用户确认停用相同的并相应地进行更改。

我们已经使用了jQuery的parents()方法来访问被点击元素的父元素

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