如何删除 cookie 在切换中使用 js.cookie & jquery？

Question

这是我的 html 代码：

<div class="accordion_container">
    <div class="accordion_head" node-tag="#1">First Accordian Head<span class="plusminus">+</span>
    </div>
    <div class="accordion_body">
        <p>First Accordian Body, it will have description</p>
    </div>
    <div class="accordion_head" node-tag="#2">Second Accordian Head<span class="plusminus">+</span>
    </div>
    <div class="accordion_body">
        <p>Second Accordian Body, it will have description</p>
    </div>
    <div class="accordion_head" node-tag="#3">Third Accordian Head<span class="plusminus">+</span>
    </div>
    <div class="accordion_body">
        <p>Third Accordian Body, it will have description</p>
    </div>
</div>

这是我的 js 脚本

$(document).ready(function () {
    //toggle the component with class accordion_body
    $(".accordion_head").click(function () {
        var tag = $(this).attr("node-tag");
        if ($(this).next(".accordion_body").is(':visible')) {
            $(this).next(".accordion_body").slideUp(300);
            $(this).next(".accordion_body").addClass("collapsed");
            Cookies.set('collapsed_Nodes', (Cookies.get('collapsed_Nodes') || '')+tag, { expires: 7, path: '' });
            $(this).children(".plusminus").text('+');
        } else {
            $(this).next(".accordion_body").slideDown(300);
            $(this).next(".accordion_body").addClass("expadned");
            Cookies.remove('collapsed_Nodes', (Cookies.remove('collapsed_Nodes') || '')+tag, { expires: 7, path: '' });
            $(this).children(".plusminus").text('-');
        }
    });
});

我的问题是，如果我点击折叠，它会起作用，但是当我点击扩展时，它无法从 cookie 中删除值，它只会将值添加到 cookie...

谁能帮我找出这个问题？

这里是js fiddlelink

Answer 1

您可以简单地从所有应该仍然存在的值中重建它，而不是删除标签。这样它每次都遵循相同的逻辑。

$(document).ready(function() {
  var $accordionHead = $(".accordion_head");

  //toggle the component with class accordion_body
  $accordionHead.on("click", function() {
    var $head = $(this);

    $head.toggleClass("collapsed");

    if ($head.is(".collapsed")) {
      $head.next(".accordion_body").slideUp(300);
    } else {
      $head.next(".accordion_body").slideDown(300);
    }

    var $collapsedHeads = $accordionHead.filter(".collapsed");
    
    Cookies.set(
      "collapsed_Nodes",
      $collapsedHeads.map(function(){ return this.getAttribute("node-tag"); }).get().join(''),
      {
        expires: 7,
        path: ''
      }
    );
  });
});

.accordion_container {
  width: 500px;
}

.accordion_head {
  background-color: skyblue;
  color: white;
  cursor: pointer;
  font-family: arial;
  font-size: 14px;
  margin: 0 0 1px 0;
  padding: 7px 11px;
  font-weight: bold;
}

.accordion_body {
  background: lightgray;
}

.accordion_body p {
  padding: 18px 5px;
  margin: 0px;
}

.plus,
.minus {
  float: right;
}

.collapsed .minus,
.plus {
  display: none;
}

.collapsed .plus {
  display: inherit;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/js-cookie/2.2.0/js.cookie.min.js"></script>

<div class="accordion_container">
  <div class="accordion_head" node-tag="#1">First Accordian Head<span class="plus">+</span><span class="minus">-</span>
  </div>
  <div class="accordion_body">
    <p>First Accordian Body, it will have description</p>
  </div>
  <div class="accordion_head" node-tag="#2">Second Accordian Head<span class="plus">+</span><span class="minus">-</span>
  </div>
  <div class="accordion_body">
    <p>Second Accordian Body, it will have description</p>
  </div>
  <div class="accordion_head" node-tag="#3">Third Accordian Head<span class="plus">+</span><span class="minus">-</span>
  </div>
  <div class="accordion_body">
    <p>Third Accordian Body, it will have description</p>
  </div>
</div>

Answer 2

根据 documentation ，要删除 cookie，您只需要：

Cookies.remove('name');

在您的情况下将是：

Cookies.remove('collapsed_Nodes');

Answer 3

我已经为 accordion_body 元素创建了一个基于 hide class 的代码示例。
它不会读取 cookie 并为所选元素操纵其值，而是始终根据隐藏的手风琴元素写入值。
当没有隐藏任何内容时，它将完全删除 cookie。

$(document).ready(function() {
  //toggle the component with class accordion_body
  $(".accordion_head").click(function() {
    var tag = $(this).data("node-tag");
    if ($(this).next(".accordion_body").is(':visible')) {
      $(this).next(".accordion_body").slideUp(300);
      $(this).next(".accordion_body").addClass("hide");
      $(this).children(".plusminus").text('+');
    }
    else {
      $(this).next(".accordion_body").slideDown(300);
      $(this).next(".accordion_body").removeClass("hide");

      $(this).children(".plusminus").text('-');
    }
    adjustCookie();
  });

  var adjustCookie = function() {
    var tags = [];
    $('.accordion_container .hide').each(function() {
      var tag = $(this).prev('.accordion_head').data("node-tag");
      tags.push(tag.replace('#', ''));
    });

    if (tags.length) {
      Cookies.set('collapsed_Nodes', tags.join('|'), {
        expires: 7
      });
    } else {
      Cookies.remove('collapsed_Nodes');
    }
  }
});

.accordion_container {
  width: 500px;
}

.accordion_head {
  background-color: skyblue;
  color: white;
  cursor: pointer;
  font-family: arial;
  font-size: 14px;
  margin: 0 0 1px 0;
  padding: 7px 11px;
  font-weight: bold;
}

.accordion_body {
  background: lightgray;
}

.accordion_body p {
  padding: 18px 5px;
  margin: 0px;
}

.plusminus {
  float: right;
}

.hide {
  display: none;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.0.0/jquery.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/js-cookie@2/src/js.cookie.min.js"></script>


<div class="accordion_container">
  <div class="accordion_head" data-node-tag="#1">First Accordian Head<span class="plusminus">-</span>
  </div>
  <div class="accordion_body">
    <p>First Accordian Body, it will have description</p>
  </div>
  <div class="accordion_head" data-node-tag="#2">Second Accordian Head<span class="plusminus">-</span>
  </div>
  <div class="accordion_body">
    <p>Second Accordian Body, it will have description</p>
  </div>
  <div class="accordion_head" data-node-tag="#3">Third Accordian Head<span class="plusminus">-</span>
  </div>
  <div class="accordion_body">
    <p>Third Accordian Body, it will have description</p>
  </div>
</div>

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