Detailed explanation of the steps to implement select secondary linkage drop-down menu in AngularJS

This time I will bring you AngularJSRealize select secondary linkageDrop-down menuDetailed step-by-step explanation, AngularJS implements select secondary linkage drop-down menuNotes What are they? Here are actual cases. Let’s take a look.

nbsp;html>


  <meta>
  <title></title>

<script></script>

<p>所属分类：
  <select>
    <option>-- 请选择 --</option>
  </select>
  <select>
    <option>-- 请选择 --</option>
  </select>
</p>

<script>
  var contantCroleList = [
    { "roleName" : "软件开发", "roleId" : "role1", "children" : [
      { "roleName" : "软件AAA", "roleId" : "role11", "children" : [] },
      { "roleName" : "软件BBB", "roleId" : "role12", "children" : []},
      { "roleName" : "软件CCC", "roleId" : "role12", "children" : []},
      { "roleName" : "软件DDD", "roleId" : "role12", "children" : []},
      { "roleName" : "软件EEE", "roleId" : "role12", "children" : []},
      { "roleName" : "软件FFF", "roleId" : "role12", "children" : []}
    ]},
    { "roleName" : "硬件开发", "roleId" : "role2", "children" : [
      { "roleName" : "硬件AAA", "roleId" : "role21", "children" : [] },
      { "roleName" : "硬件BBB", "roleId" : "role22", "children" : []},
      { "roleName" : "硬件CCC", "roleId" : "role23", "children" : []},
      { "roleName" : "硬件DDD", "roleId" : "role24", "children" : []},
      { "roleName" : "硬件EEE", "roleId" : "role25", "children" : []},
      { "roleName" : "硬件FFF", "roleId" : "role26", "children" : []}
    ]},
    { "roleName" : "嵌入式开发", "roleId" : "role3", "children" : [
      { "roleName" : "嵌入式AAA", "roleId" : "role31", "children" : [] },
      { "roleName" : "嵌入式BBB", "roleId" : "role32", "children" : []},
      { "roleName" : "嵌入式CCC", "roleId" : "role33", "children" : []},
      { "roleName" : "嵌入式DDD", "roleId" : "role34", "children" : []},
      { "roleName" : "嵌入式EEE", "roleId" : "role35", "children" : []},
      { "roleName" : "嵌入式FFF", "roleId" : "role36", "children" : []}
    ]}
  ];
  function Controller($scope) {
    $scope.classification1 = contantCroleList;
    $scope.changeClassification = function (selected1) {
      $scope.classification2 = selected1.children;
    };
  }
</script>

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