利用CSS3在Angular中实现动画

时间：2021-05-25

废话不多说了，直接给大家贴实例代码。

直接看例子：

<!DOCTYPE HTML><html ng-app="myApp"><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>ngAnimate插件1</title> <script type="text/javascript" src="https://code.angularjs.org/1.3.8/angular.min.js"></script><script type="text/javascript" src="https://code.angularjs.org/1.3.8/angular-animate.min.js"></script> <style type="text/css"> .box{width:200px;height:200px;background-color:red;transition:1s all;}.box.ng-enter{opacity:0;}.box.ng-enter-active{opacity:1;}.box.ng-leave{opacity:1;}.box.ng-leave-active{opacity:0;}</style></head><body><div ng-controller="Aaa"><input type="checkbox" ng-model="bBtn"><div class="box" ng-if="bBtn"></div></div><script type="text/javascript">var m1 = angular.module('myApp',['ngAnimate']);m1.controller('Aaa',['$scope',function($scope){$scope.bBtn = true;}]);</script></body></html>

引入angular-animate插件，我们绑定了ng-if指令，在删除和添加DOM节点的时候，angular会添加指定的class，方便我们完成动画。

.ng-enter
.ng-enter-active
.ng-leave
.ng-leave-active

现在再看看显示和隐藏。

<!DOCTYPE HTML><html ng-app="myApp"><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>ngAnimate插件4</title><script type="text/javascript" src="https://code.angularjs.org/1.3.8/angular.min.js"></script><script type="text/javascript" src="https://code.angularjs.org/1.3.8/angular-animate.min.js"></script><style type="text/css">.box{width:200px;height:200px;background-color:red;transition:1s all;}.box.ng-hide-remove{opacity:0;}.box.ng-hide-remove-active{opacity:1;}.box.ng-hide-add{opacity:1;}.box.ng-hide-add-active{opacity:0;}</style></head><body><div ng-controller="Aaa"><input type="checkbox" ng-model="bBtn"><div class="box" ng-show="bBtn"></div></div><script type="text/javascript">var m1 = angular.module('myApp',['ngAnimate']);m1.controller('Aaa',['$scope',function($scope){$scope.bBtn = true;}]);</script></body></html>

.ng-hide-remove
.ng-hide-remove-active
.ng-hide-add
.ng-hide-add-active

这个例子我们使用的是ng-show，属于显示和隐藏。上一个例子是ng-if，属于添加和删除。

回顾上一节我们提到的路由，我们可以结合起来操作。

<!DOCTYPE HTML><html ng-app="myApp"><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>ngAnimate插件2</title> <script type="text/javascript" src="js/angular.min.js"></script><script type="text/javascript" src="http://cdn.bootcss.com/angular.js/1.3.0-beta.13/angular-route.min.js"></script><script type="text/javascript" src="http://cdn.bootcss.com/angular.js/1.3.0-beta.13/angular-animate.min.js"></script> <style type="text/css">.box{transition:1s all;position:absolute;}.box.ng-enter{opacity:0;}.box.ng-enter-active{opacity:1;}.box.ng-leave{opacity:1;}.box.ng-leave-active{opacity:0;}</style></head><body><div ng-controller="Aaa"><a href="javascript:void(0);" ng-click="$location.path('aaa')">首页</a><a href="javascript:void(0);" ng-click="$location.path('bbb')">内容</a><a href="javascript:void(0);" ng-click="$location.path('ccc')">标题</a><div class="box" ng-view></div></div><script type="text/javascript">var m1 = angular.module('myApp',['ngRoute','ngAnimate']);m1.config(['$routeProvider',function($routeProvider){$routeProvider.when('/aaa',{template : '<h1>AAA</h1>{{name}}',controller : 'Aaa'}).when('/bbb',{template : '<h1>BBB</h1>{{name}}',controller : 'Bbb'}).when('/ccc',{template : '<h1>CCC</h1>{{name}}',controller : 'Ccc'}).otherwise({redirectTo : '/aaa'});}]);m1.controller('Aaa',['$scope','$location','$routeParams',function($scope,$location,$routeParams){$scope.name = 'xiecg-Aaa';$scope.$location = $location;}]);m1.controller('Bbb',['$scope',function($scope){$scope.name = 'xiecg-Bbb';}]);m1.controller('Ccc',['$scope',function($scope){$scope.name = 'xiecg-Ccc';}]);</script></body></html>

这样在切换页面的时候就有淡入淡出的效果。

再回顾前面的几章讲的百度搜索：

<!DOCTYPE HTML><html ng-app="myApp"><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>ngAnimate插件3</title> <script type="text/javascript" src="js/jquery-1.11.1.js"></script><script type="text/javascript" src="https://code.angularjs.org/1.3.8/angular.min.js"></script><script type="text/javascript" src="https://code.angularjs.org/1.3.8/angular-animate.min.js"></script> <style type="text/css">.box{transition:1s all;}.box.ng-enter{opacity:0;}.box.ng-enter-active{opacity:1;}.box.ng-leave{display:none;}.box.ng-enter-stagger{animation-delay:0.1s;}</style></head><body><div ng-controller="Aaa"><input type="text" ng-model="name" ng-keyup="change(name)"><input type="button" ng-click="change(name)" value="搜索"><ul><li class="box" ng-repeat="d in data">{{d}}</li></ul></div><script type="text/javascript">var m1 = angular.module('myApp',['ngAnimate']);m1.controller('Aaa',['$scope','$http','$timeout',function($scope,$http,$timeout){var timer = null;$scope.data = [];$scope.change = function(name){$timeout.cancel(timer);timer = $timeout(function(){$http({method : 'JSONP',url : 'https://sp0.baidu.com/5a1Fazu8AA54nxGko9WTAnF6hhy/su?wd='+name+'&cb=JSON_CALLBACK',}).success(function(data,state,headers,config){console.log(data);$scope.data = data.s;}).error(function(data){console.log(data);});},500);};}]);</script></body></html>

通过跨域我们得到百度返回过来的数据，依次过渡显示到页面上。


下面来看JS动画的例子：

<!DOCTYPE HTML><html ng-app="myApp"><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>ngAnimate插件5</title><script type="text/javascript" src="js/jquery-1.11.1.js"></script><script type="text/javascript" src="https://code.angularjs.org/1.3.8/angular.min.js"></script><script type="text/javascript" src="https://code.angularjs.org/1.3.8/angular-animate.min.js"></script><style type="text/css">.box{width:200px;height:200px;background-color:red;}</style></head><body><div ng-controller="Aaa"><input type="checkbox" ng-model="bBtn"><div class="box" ng-if="bBtn"></div></div><script type="text/javascript">var m1 = angular.module('myApp',['ngAnimate']);//ng-ifm1.animation('.box',function(){return {//hide（删除）leave : function(element,done){//console.log(element,done); //元素节点&删除节点的回调函数$(element).animate({width : 0,height : 0},1000,done);},//show（填充）enter : function(element,done){//ng-if会动态创建元素，元素默认就有200的高宽。。。$(element).css({width : 0,height : 0}).animate({width : 200,height : 200},1000,done);}};});m1.controller('Aaa',['$scope',function($scope){$scope.bBtn = true;}]);</script></body></html>

JS动画我们使用JQ的动画库来完成，注意我们在视图上使用的是ng-if，表示添加和删除DOM节点，所以我们在控制器return leave&enter。

JS动画有了ng-if，自然就是ng-show。

<!DOCTYPE HTML><html ng-app="myApp"><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>ngAnimate插件5</title><script type="text/javascript" src="js/jquery-1.11.1.js"></script><script type="text/javascript" src="https://code.angularjs.org/1.3.8/angular.min.js"></script><script type="text/javascript" src="https://code.angularjs.org/1.3.8/angular-animate.min.js"></script><style type="text/css">.box{width:200px;height:200px;background-color:red;}</style></head><body><div ng-controller="Aaa"><input type="checkbox" ng-model="bBtn"><div class="box" ng-show="bBtn"></div></div><script type="text/javascript">var m1 = angular.module('myApp',['ngAnimate']);//ng-showm1.animation('.box',function(){return {//hide（隐藏）addClass : function(element,sClass,done){//console.log(element,sClass,done); //元素节点&样式名&删除节点的回调函数$(element).animate({width : 0,height : 0},1000,done);},//show（显示）removeClass : function(element,sClass,done){$(element).animate({width : 200,height : 200},1000,done); }};});m1.controller('Aaa',['$scope',function($scope){$scope.bBtn = true;}]);</script></body></html>

在控制器return addClass&removeClass，表示隐藏和显示。

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