用html+css+js实现一个无限级树形控件

时间:2022-09-06 16:02:45

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" onclick="toggle(this)"></span><input type="checkbox" onclick="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:

用html+css+js实现一个无限级树形控件