How to implement tab switching using AngularJS-JS Tutorial-php.cn

How to implement tab switching using AngularJS

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Release： 2018-05-29 11:33:03

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This time I will show you how to use AngularJS to switch tabs and tabs. What are the things to note?The following is a practical case, let’s take a look. .

Tab one:

##JavaScript html css

<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8">
    <title> js标签页tab切换</title>
    <style>
      #p1 .active{
        background:blue;
      }
      #p1 p{
        width:200px;
        height:200px;
        background:gray;
        border:1px solid black;
        display:none;
      }
    </style>
    <script>
      window.onload=function (){
        var op=document.getElementById('p1');
        var aBtn=op.getElementsByTagName('input');
        var ap=op.getElementsByTagName('p');
        for(var i=0;i<aBtn.length;i++){     //遍历p1中的按钮
          aBtn[i].index=i;      //给aBth[]添加自定义属性
          aBtn[i].onclick=function (){
            for(var i=0;i<aBtn.length;i++){ //遍历按钮，将class清除
              aBtn[i].className=&#39;&#39;;
              ap[i].style.display=&#39;none&#39;;
            }
            this.className=&#39;active&#39;;
            ap[this.index].style.display=&#39;block&#39;;
          }
        }
      }
    </script>
  </head>
  <body>
    <p id="p1">
      <input class="active" type="button" value="选项1" />
      <input type="button" value="选项2" />
      <input type="button" value="选项3" />
      <input type="button" value="选项4" />
      <p style="display:block;">111</p>
      <p>222</p>
      <p>333</p>
      <p>444</p>
    </p>
  </body>
</html>

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Tab two:

angularjs directives:

ng-class, ng-click, ng-if

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>AngularJS标签页tab切换</title>
  <style>
    .active {
      background-color: orange;
    }
  </style>
  <script src="http://apps.bdimg.com/libs/angular.js/1.4.6/angular.min.js"></script>
</head>
<body ng-app="s1.app">
<p>
  <button ng-class="{ &#39;active&#39; : data.current == 1 }" ng-click="actions.setCurrent(1)">张三</button>
  <button ng-class="{ &#39;active&#39; : data.current == 2 }" ng-click="actions.setCurrent(2)">李四</button>
  <button ng-class="{ &#39;active&#39; : data.current == 3 }" ng-click="actions.setCurrent(3)">王五</button>
</p>
<p>
  <p ng-if="data.current == 1">张三的个人信息</p>
  <p ng-if="data.current == 2">李四的个人信息</p>
  <p ng-if="data.current == 3">王五的个人信息</p>
  <script>
    var app = angular.module('s1.app', []);
    app.run(function ($rootScope) {
      $rootScope.data = {
        current: "1" // 1代表张三，2代表李四，3代表王五
      };
      $rootScope.actions =
      {
        setCurrent: function (param) {
          $rootScope.data.current = param;
        }
      }
    })
  </script>
</p>
</body>
</html>

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Tab three:

angularjs command:

ng-class, ng-click, ng-show

<!DOCTYPE html>
<html ng-app="myApp">
<head lang="en">
  <meta charset="UTF-8">
  <title AngularJS标签页tab切换</title>
  <script src="http://apps.bdimg.com/libs/angular.js/1.4.6/angular.min.js"></script>
</head>
<body>
<section ng-controller="myCtrl as panel">
  <ul>
    <li ng-class="{active:panel.isSelected(1)}">
      <a href ng-click="panel.selectTab(1)">1111111111</a>
    </li>
    <li ng-class="{active:panel.isSelected(2)}">
      <a href ng-click="panel.selectTab(2)">2222222222</a>
    </li>
    <li ng-class="{active:panel.isSelected(3)}">
      <a href ng-click="panel.selectTab(3)">33333333333</a>
    </li>
  </ul>
  <!--是否点击-->
  {{panel.isSelected(1)}}
  {{panel.isSelected(2)}}
  {{panel.isSelected(3)}}
  <p class="panel" ng-show="panel.isSelected(1)">
    <h1>我是1111111111111111111111</h1>
  </p>
  <p class="panel" ng-show="panel.isSelected(2)">
    <h1>我是22222222222222222</h1>
  </p>
  <p class="panel" ng-show="panel.isSelected(3)">
    <h1>我是3333333333333333333333</h1>
  </p>
</section>
<script>
  var app = angular.module("myApp", []);
  app.controller("myCtrl", function () {
    this.tab = 2;/*设置默认*/
    this.selectTab = function (setTab) {/*设置tab点击事件*/
      this.tab = setTab;
    };
    this.isSelected = function (checkedTab) {/*页面的切换*/
      return this.tab === checkedTab;
    }
  });
</script>
</body>
</html>

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Tab four:

angularjs command

The second and third methods are derived from the improvement of the following code, and the effects are the same .

<!DOCTYPE html>
<html ng-app="myApp">
<head lang="en">
  <meta charset="UTF-8">
  <title>AngularJS标签页tab切换</title>
  <script src="http://apps.bdimg.com/libs/angular.js/1.4.6/angular.min.js"></script>
</head>
<body>
<section ng-init="tab=3">
  <ul>
    <li ng-class="{active:tab===1}">
      <a href ng-click="tab=1">1111111111</a>
    </li>
    <li ng-class="{active:tab===2}">
      <a href ng-click="tab=2">2222222222</a>
    </li>
    <li ng-class="{active:tab===3}">
      <a href ng-click="tab=3">33333333333</a>
    </li>
  </ul>
  <!--是否点击-->
  {{tab===1}}
  {{tab===2}}
  {{tab===3}}
  <p class="panel" ng-show="tab===1">
    <h1>我是1111111111111111111111</h1>
  </p>
  <p class="panel" ng-show="tab===2">
    <h1>我是22222222222222222</h1>
  </p>
  <p class="panel" ng-if="tab===3">
    <h1>我是3333333333333333333333</h1>
  </p>
</section>
<script>
  var app = angular.module("myApp", []);
  app.controller("myCtrl", function () {
  });
</script>
</body>
</html>

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But there is a difference between ng-show and ng-if

The first difference is,

ng-if This dom node is only created when the subsequent expression is true.
ng-show is created initially, use display:block and display:none to control display or non-display.

The second difference is that

ng-if will (implicitly) generate a new scope, ng-switch The same goes for , ng-include, etc. that will dynamically create an interface.

This will result in using basic variables to bind

ng-model in ng-if , and binding this model to another display in the outer layer p Area, when the inner layer changes, the outer layer will not change synchronously, because there are already two variables at this time.

<p>{{name}}</p>
<p ng-if="true">
  <input type="text" ng-model="name">
</p>

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ng-show does not have this problem because it does not come with a first-level scope.

The way to avoid this kind of problem is to always bind the elements in the page to the properties of the object (

data.x) rather than directly to the basic variables (x)superior. Scope in AngularJS

I believe you have mastered the method after reading the case in this article. For more exciting information, please pay attention to other related articles on the php Chinese website!