树形导航


<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <meta http-equiv="X-UA-Compatible" content="ie=edge">
  <title>树形导航</title>
  <style>
    a{
      text-decoration: none;
    }
    ul{
      list-style: none;
    }
    .treeNode li{
      margin: 3px 0px 3px -20px;
      white-space:nowrap;
    }
    .treeIcon{
      border:1px solid #ccc;
    }
    .treeIconNo{
      border: 1px solid #fff;
    }
  </style>
</head>
<body>
  <ul class="treeNode">
    <li>
      <div class="treeList">
        <a href="javascript:void(0)" class="treeIcon">-</a>
        <a href="javascript:void(0)">1点</a>
      </div>

      <ul class="treeNode">
        <li>
          <div class="treeList">
            <a href="javascript:void(0)" class="treeIcon">-</a>
            <a href="javascript:void(0)">1-2点</a>
          </div>

          <ul class="treeNode">
            <li>
              <div class="treeList">
                <a href="javascript:void(0)" class="treeIcon">-</a>
                <a href="javascript:void(0)">1-2-1点</a>
              </div>
              <ul class="treeNode">
                <li>
                  <div class="treeList">
                    <a href="javascript:void(0)" class="treeIconNo">&nbsp;</a>
                    <a href="javascript:void(0)">1-2-1-1点</a>
                  </div>
                  <ul></ul>
                </li>
              </ul>
            </li>
          </ul>
        </li>

        <li>
          <div class="treeList">
            <a href="javascript:void(0)" class="treeIconNo">&nbsp;</a>
            <a href="javascript:void(0)">1-3点</a>
          </div>
        </li>

        <li>
          <div class="treeList">
            <a href="javascript:void(0)" class="treeIconNo">&nbsp;</a>
            <a href="javascript:void(0)">1-4点</a>
          </div>
        </li>

        <li>
          <div class="treeList">
            <a href="javascript:void(0)" class="treeIconNo">&nbsp;</a>
            <a href="javascript:void(0)">1-5点</a>
          </div>
        </li>

        <li>
          <div class="treeList">
            <a href="javascript:void(0)" class="treeIconNo">&nbsp;</a>
            <a href="javascript:void(0)">1-6点</a>
          </div>
          <ul class="treeNode">
            <li>
              <div class="treeList">
                <a href="javascript:void(0)" class="treeIconNo">&nbsp;</a>
                <a href="javascript:void(0)">1-6-1点</a>
              </div>
            </li>

            <li>
              <div class="treeList">
                <a href="javascript:void(0)" class="treeIconNo">&nbsp;</a>
                <a href="javascript:void(0)">1-6-2点</a>
              </div>
            </li>
          </ul>


        </li>

      </ul>
    </li>
  </ul>

  <script type="text/javascript">
    window.onload = function(){
      function getTypeElement(es,type) {
        var eArr = [],
            esl = null;
        for(i = 0;i<es.length;i++){
          esl = es[i];
          if(esl.nodeName.replace("#","").toLocaleLowerCase() == type){
            eArr.push(esl);
          }
        }
        return eArr;
      }
      function treeMenuNav() {
        var as = document.getElementsByTagName('a'),
            ao = null;
            for(var ai = 0,; ai<as.length; ai++){
              ao = as[ai];

              if(ao.className == "treeIcon"){
                ao.onclick = function(){
                  var iconType = this.innerHTML,
                      uls = getTypeElement(this.parentNode.parentNode.childNodes,"ul"),
                      uli = 0,
                      ull = uls.length,
                      dis = "block";
                      if (iconType == "-"){
                        this.innerHTML = "+";
                        dis = "none";
                      }else{
                        this.innerHTML = "-";
                      }
                      for(; uli <ull;uli++){
                        uls[uli].style.display = dis;
                      }
                }

              }

            }
      }
      treeMenuNav();
    }
  </script>
</body>
</html>
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