用html+css+js实现一个无限级树形控件

落日映苍穹つ 2021-12-18 06:45 802阅读 0赞

[https://blog.csdn.net/cc\_fys/article/details/81284638][https_blog.csdn.net_cc_fys_article_details_81284638]

### 树形菜单示例： ###

<!DOCTYPE html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
        <title>树形菜单示例</title>
        <style type="text/css">
         ul>li{
             list-style: none;
         }
           /* 可展开*/
          .switch-open
          {
              margin-left:-12px;
              border:6px solid transparent;
              display:inline-block;
              width:0px;
              height:0px;
              border-top-color: black;
     
          }
           /* 展开完毕*/
         .switch-close
         {
             margin-left:-12px;
             border:6px solid transparent;
             display:inline-block;
             width:0px;
             height:0px;
             border-left-color: black;
             margin-bottom: 2px;
     
         }
           /* 改变CheckBox样式*/
         input[type='checkbox']{
             width: 20px;
             height: 20px;
     
             -webkit-appearance:none;
             -moz-appearance: none;
             border: 1px solid #c9c9c9;
             border-radius: 3px;
             outline: none;
             color:white;
             text-align: center;
         }
         input[type='checkbox']:before
         {
             content: '√ ';
             color:transparent;
         }
         input[type=checkbox]:checked{
             background-color: #30add6;
         }
         input[type=checkbox]:checked:before{
             content: '√';
             color:white;
             font-weight: bold;
         }
     
     
        </style>
    </head>
    <body>
    <div class="warp">
        <ul id="container">
        </ul>
    </div>
     
     
    <script type="text/javascript">
     
        //结构
        var json={
            '0-0':{
                '0-0-0':null,
                '0-0-1':{
                    '0-0-1-0':null,
                    '0-0-1-1':null,
                    '0-0-1-2':null
                },
                '0-0-2':null
            },
            '0-1':{
                '0-1-0':null,
                '0-1-1':null
            },
            '0-2':null
        };
     
    //这里生成DOM
        function generate(json,par)
        {
            for(var attr in json)
            {
                var ele=document.createElement('li');
                if(!json[attr])
                    ele.innerHTML=' <input type="checkbox"></input>'+attr;
                else
                {
                    ele.innerHTML='<span><span class="switch-open" οnclick="toggle(this)"></span><input type="checkbox" οnclick="checkChange(this)"></input>'+attr+'</span>';
                    var nextpar=document.createElement('ul');
                    ele.appendChild(nextpar);
                    generate(json[attr],nextpar);
                }
                par.appendChild(ele);
            }
        }
        generate(json,document.getElementById('container'));
     
        //处理展开和收起
    function toggle(eve)
    {
        var par=eve.parentNode.nextElementSibling;
        if(par.style.display=='none')
        {
            par.style.display='block';
            eve.className='switch-open';
     
        }
        else
        {
            par.style.display='none';
            eve.className='switch-close';
        }
    }
     
    //处理全部勾选和全部不选
        function checkChange(eve)
        {
            var oul=eve.parentNode.nextElementSibling;
            if(eve.checked)
            {
                    for(var i=0;i<oul.querySelectorAll('input').length;i++)
                    {
                        oul.querySelectorAll('input')[i].checked=true;
                    }
            }
            else
            {
                for(var i=0;i<oul.querySelectorAll('input').length;i++)
                {
                    oul.querySelectorAll('input')[i].checked=false;
                }
            }
        }
    </script>
     
     
     
    </body>
    </html>

### 实现效果： ###

![1043600-20190604193419911-1372643532.png][]

转载于:https://www.cnblogs.com/rxbook/p/10975673.html

[https_blog.csdn.net_cc_fys_article_details_81284638]: https://blog.csdn.net/cc_fys/article/details/81284638
[1043600-20190604193419911-1372643532.png]: /images/20211218/7e62e74caf174b3eafa0c99fc0d08c2c.png