Bootstrap（父或子...）和复选框之间的树视图关系：当我单击具有此复选框的元素跨度时如何设置项目复选框？

Question

我在树视图中添加了复选框，但节点（父节点或子节点...）与添加的复选框之间没有任何关系

我想当我点击节点或在输入时选中复选框并同时打开该节点的子节点列表，

如果我再次单击节点（父节点或子节点...）或输入我取消选中输入并关闭该节点的子节点列表

这是我的代码

$(function () {
    $('.tree li:has(ul)').addClass('parent_li').find(' > span').attr('title', 'Collapse this branch');
     var extra = $(".tree li.parent_li > span")
    .parent("li.parent_li")
    .find(" > ul > li");
  extra.hide("fast");
    
    $('.tree li.parent_li > span').on('click', function (e) {
        var children = $(this).parent('li.parent_li').find(' > ul > li');
        if (children.is(":visible")) {
            children.hide('fast');
            $(this).attr('title', 'Expand this branch').find(' > i').addClass('icon-plus-sign').removeClass('icon-minus-sign');
        } else {
            children.show('fast');
            $(this).attr('title', 'Collapse this branch').find(' > i').addClass('icon-minus-sign').removeClass('icon-plus-sign');
        }
        e.stopPropagation();
    });
});

.tree {
    min-height:20px;
    padding:19px;
    margin-bottom:20px;
    background-color:#fbfbfb;
    border:1px solid #999;
    -webkit-border-radius:4px;
    -moz-border-radius:4px;
    border-radius:4px;
    -webkit-box-shadow:inset 0 1px 1px rgba(0, 0, 0, 0.05);
    -moz-box-shadow:inset 0 1px 1px rgba(0, 0, 0, 0.05);
    box-shadow:inset 0 1px 1px rgba(0, 0, 0, 0.05)
}
.tree li {
    list-style-type:none;
    margin:0;
    padding:10px 5px 0 5px;
    position:relative
}
.tree li::before, .tree li::after {
    content:'';
    left:-20px;
    position:absolute;
    right:auto
}
.tree li::before {
    border-left:1px solid #999;
    bottom:50px;
    height:100%;
    top:0;
    width:1px
}
.tree li::after {
    border-top:1px solid #999;
    height:20px;
    top:25px;
    width:25px
}
.tree li span {
    -moz-border-radius:5px;
    -webkit-border-radius:5px;
    border:1px solid #999;
    border-radius:5px;
    display:inline-block;
    padding:3px 8px;
    text-decoration:none
}
.tree li.parent_li>span {
    cursor:pointer
}
.tree>ul>li::before, .tree>ul>li::after {
    border:0
}
.tree li:last-child::before {
    height:30px
}
.tree li.parent_li>span:hover, .tree li.parent_li>span:hover+ul li span {
    background:#eee;
    border:1px solid #94a0b4;
    color:#000
}

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<link href="https://netdna.bootstrapcdn.com/twitter-bootstrap/2.3.1/css/bootstrap-combined.min.css" id="theme" rel="stylesheet">
<div class="tree well">
    <ul>
        <li>
            <span>  <input type="checkbox" id="test1" name="test1">  Parent</span> 
            <ul>
                <li>
                    <span><input type="checkbox" id="test2" name="test2"> Child</span> 
                    <ul>
                        <li>
                            <span><input type="checkbox" id="test3" name="test3"> Grand Child</span> 
                          <ul>
                        <li>
                            <span><input type="checkbox" id="test3" name="test3"> Grand Grand Child</span> 
                           <ul>
                        <li>
                            <span><input type="checkbox" id="test3" name="test3"> Grand Grand Grand Child</span> 
                        </li>
                    </ul>
                        </li>
                    </ul>
                        </li>
                    </ul>
                </li>
                <li>
                    <span><input type="checkbox" id="test4" name="test4"> Child</span> 
                    <ul>
                        <li>
                            <span><input type="checkbox" id="test4" name="test4"> Grand Child</span> 
                        </li>
                        <li>
                            <span><input type="checkbox" id="test5" name="test5">Grand Child</span> 
                            <ul>
                                <li>
                                    <span><input type="checkbox" id="test6" name="test6"> Great Grand Child</span> 
                                    <ul>
                                        <li>
                                            <span><input type="checkbox" id="test7" name="test7">Great great Grand Child</span> 
                                        </li>
                                        <li>
                                            <span><input type="checkbox" id="test8" name="test8"> Great great Grand Child</span> 
                                        </li>
                                     </ul>
                                </li>
                                <li>
                                    <span><input type="checkbox" id="test9" name="test9">Great Grand Child</span> 
                                </li>
                                <li>
                                    <span><input type="checkbox" id="test10" name="test10"> Great Grand Child</span> 
                                </li>
                            </ul>
                        </li>
                        <li>
                            <span><input type="checkbox" id="test11" name="test11"> Grand Child</span> 
                        </li>
                    </ul>
                </li>
            </ul>
        </li>
        <li>
            <span><input type="checkbox" id="test12" name="test12"> Parent2</span> 
            <ul>
                <li>
                    <span><input type="checkbox" id="test13" name="test13"> Child</span> 
                </li>
            </ul>
        </li>
    </ul>
</div>

这是一个 JSFiddle link :https://jsfiddle.net/daizdev/q5hwg0yj/13/

Answer 1

添加 $(this).find("input").removeAttr("checked") 和 $(this).find("input").prop("checked", "true") 以设置和删除选中的属性:

  $(".tree li.parent_li > span").on("click", function (e) {
    var children = $(this).parent("li.parent_li").find(" > ul > li");
    if (children.is(":visible")) {
      $(this).find("input").removeAttr("checked");/*----------------*/
      children.hide("fast");
      $(this)
        .attr("title", "Expand this branch")
        .find(" > i")
        .addClass("icon-plus-sign")
        .removeClass("icon-minus-sign");
    } else {
      $(this).find("input").prop("checked", "true");/*----------------*/
      children.show("fast");
      $(this)
        .attr("title", "Collapse this branch")
        .find(" > i")
        .addClass("icon-minus-sign")
        .removeClass("icon-plus-sign");
    }
    e.stopPropagation();
  });

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