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javascript - 如何使用jquery在控制台中将ul li值转换为数组格式

问题描述

我有一个 ul li 的结构包含一些值，当我选中一个或多个子元素的复选框时，该特定 li 的值应在浏览器控制台中以下面的数组格式显示其父值。如果我不选择任何孩子，该值或其父值不应该显示。每件事都工作正常，但这里唯一的问题是孩子及其父母也显示了我没有检查过的。我已经更新了 plunker https://plnkr 中的代码。 co/edit/koWZabX8OV88opxSDNIv?p=preview，下面是我的代码

$(".applybtn").click(function() {
  alert('sss');
  var getAllList = $('#leftNavBar ul').find('li.childData ul li');
  var getAllParents = $('#leftNavBar ul').find('li.parentNav');
  var getFilterData = [];
  $(getAllParents).each(function() {
    getFilterData.push({
      name: $(this).text().trim(),
      value: []

    });
  });
  $(getAllList).each(function() {
    if ($(this).find('input').prop("checked") == true) {
      var parent = $(this).closest("ul").closest("li").prev().text().trim();
      var getIndex = _.findIndex(getFilterData, ['name', parent]);
      var name = $(this).text().trim();
      getFilterData[getIndex].value.push(name);
    }
  });
  console.log(JSON.stringify(getFilterData));
});
.parentNav {
  background: red;
  font-size: 16px
}

.childData {
  background: #ccc;
}

.childData ul li {
  clear: both;
}
<script src="https://cdn.jsdelivr.net/npm/lodash@4.17.11/lodash.min.js"></script>

<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
<div class="col-md-3" id="leftNavBar">
  <ul>
    <li class="parentNav">parent1</li>
    <li class="childData">
      <ul>
        <li>child11<span class="pull-right"><input type ="checkbox"/></span></li>
        <li>child12<span class="pull-right"><input type ="checkbox"/></span></li>
      </ul>
    </li>
  </ul>
  <ul>
    <li class="parentNav">parent2</li>
    <li class="childData">
      <ul>
        <li>child2<span class="pull-right"><input type ="checkbox"/></span></li>
      </ul>
    </li>
  </ul>
  <ul>
    <li class="parentNav">parent3</li>
    <li class="childData">
      <ul>
        <li>child3<span class="pull-right"><input type ="checkbox"/></span></li>
      </ul>
    </li>
  </ul>
  <div class="applybutton"><button class="applybtn" type="button">Appply</button></div>
</div>

json格式输出

 [{
            "name": "parent1",
            "value": ["child11", "child12"]
        }, {
            "name": "parent2",
            "value": []
        }, {
            "name": "parent3",
            "value": []
        }]

标签： javascriptjqueryhtml

解决方案

您可以使用该函数$.text()获取元素内的文本。

这种方法parentNav使用函数找到 ，然后找到它的子项$.siblings()。

var obj = [];
$('.parentNav').each(function() {
  var childrenLis = $(this).siblings('.childData').find('li');
  obj.push({
    name: $(this).text(),
    value: childrenLis.toArray().map(l => $(l).text())
  })
});

console.log(obj);
.as-console-wrapper { max-height: 100% !important; top: 0; }
<script src="https://cdn.jsdelivr.net/npm/lodash@4.17.11/lodash.min.js"></script><link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css"><script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script><script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script><div class="col-md-3" id="leftNavBar">  <ul>    <li class="parentNav">parent1</li>    <li class="childData">      <ul>        <li>child11<span class="pull-right"><input type ="checkbox"/></span></li>        <li>child12<span class="pull-right"><input type ="checkbox"/></span></li>      </ul>    </li>  </ul>  <ul>    <li class="parentNav">parent2</li>    <li class="childData">      <ul>        <li>child2<span class="pull-right"><input type ="checkbox"/></span></li>      </ul>    </li>  </ul>  <ul>    <li class="parentNav">parent3</li>    <li class="childData">      <ul>        <li>child3<span class="pull-right"><input type ="checkbox"/></span></li>      </ul>    </li>  </ul>  <div class="applybutton"><button class="applybtn" type="button">Appply</button></div></div>

将该方法放入您的代码中

$(".applybtn").click(function() {
  var getFilterData = [];
  $('.parentNav').each(function() {
    var childrenLis = $(this).siblings('.childData').find('li');
    getFilterData.push({
      name: $(this).text(),
      value: childrenLis.toArray().map(l => $(l).text())
    })
  });
  console.log(JSON.stringify(getFilterData));
});
.parentNav {
  background: red;
  font-size: 16px
}

.childData {
  background: #ccc;
}

.childData ul li {
  clear: both;
}

    .as-console-wrapper { max-height: 100% !important; top: 0; }
<script src="https://cdn.jsdelivr.net/npm/lodash@4.17.11/lodash.min.js"></script>

<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
<div class="col-md-3" id="leftNavBar">
  <ul>
    <li class="parentNav">parent1</li>
    <li class="childData">
      <ul>
        <li>child11<span class="pull-right"><input type ="checkbox"/></span></li>
        <li>child12<span class="pull-right"><input type ="checkbox"/></span></li>
      </ul>
    </li>
  </ul>
  <ul>
    <li class="parentNav">parent2</li>
    <li class="childData">
      <ul>
        <li>child2<span class="pull-right"><input type ="checkbox"/></span></li>
      </ul>
    </li>
  </ul>
  <ul>
    <li class="parentNav">parent3</li>
    <li class="childData">
      <ul>
        <li>child3<span class="pull-right"><input type ="checkbox"/></span></li>
      </ul>
    </li>
  </ul>
  <div class="applybutton"><button class="applybtn" type="button">Appply</button></div>
</div>

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