如何在控制台中使用jquery将ul-li值转换为数组格式

Question

我有一个ul-li的结构，它包含一些值，当我选中一个或多个子元素的复选框时，该特定li的值应该在浏览器控制台中以下面的数组格式与其父值一起显示。如果我不选择任何子项，则不应显示该值或其父项值。每件事都很好，但这里唯一的问题是孩子和它的父母也出现了，我没有检查。我已经更新了plunker中的代码https://plnkr.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>

输出的json格式

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

Answer 1

您可以使用函数$.text()来获取元素内部的文本。

此方法使用函数$.siblings()查找parentNav及其子级

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>

将这种方法放在代码中

$(".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>