AngularJS 是一組用于創建單頁Web應用的豐富框架，給構建豐富交互地應用帶來了所有需要的功能。其中一項主要的特性就是Angular帶來了對動畫的支持。
本篇體驗在AngularJS中實現在"顯示/隱藏"這2種狀態切換間添加動畫效果。
通過CSS方式實現顯示/隱藏動畫效果
思路：
→npm install angular-animage
→依賴：var app = angular.module("app",["ngAnimate"]);
→controller中一個變量接收bool值
→界面中提供一個按鈕，點擊改變bool值
→界面中顯示/隱藏的區域提供ng-if和controller中的bool值綁定
app.js
var app = angular.module("app",["ngAnimate"]);app.controller("AppCtrl", function(){ this.toggle = true;})index.html
<!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <title></title> <link rel="stylesheet" href="../node_modules/bootstrap/dist/css/bootstrap.min.css"/> <link rel="stylesheet" href="styles.css"/></head><body ng-app="app" ng-controller="AppCtrl as app"><button class="btn" ng-click="app.toggle=!app.toggle">Toggle Animation</button><div class="toggle" ng-if="app.toggle">Some content here</div><script src="../node_modules/angular/angular.min.js"></script><script src="../node_modules/angular-animate/angular-animate.min.js"></script><script src="app.js"></script></body></html>
styes.css
.toggle{ -webkit-transition: linear 1s; -moz-transition: linear 1s; -ms-transition: linear 1s; -o-transition: linear 1s; transition: linear 1s;}.toggle.ng-enter{ opacity: 0;}.toggle.ng-enter-active{ opacity: 1;}.toggle.ng-leave{ opacity: 1;}.toggle.ng-leave-active{ opacity: 0;} 通過animation方法實現顯示/隱藏動畫效果
app.animation("某個類名", function(){ return { leave: function(element, done){ }, enter: function(element, done){ } }}) animation可以在某個類名上加上leave,enter事件，leave和enter函數內部如何實現動畫效果呢？可以通過TweenMax.min.js實現。
app1.js
ar app = angular.module("app",["ngAnimate"]);app.controller("AppCtrl", function(){ this.toggle = true;})app.animation(".toggle", function(){ return { leave: function(element, done){ //element.text("nooooo"); TweenMax.to(element, 1, {opacity:0, onComplete:done}) }, enter: function(element, done){ TweenMax.from(element, 1, {opacity:0, onComplete:done}) } }}) index1.html
<!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <title></title> <link rel="stylesheet" href="../node_modules/topcoat/css/topcoat-desktop-light.min.css"/></head><body class="well-lg" ng-app="app" ng-controller="AppCtrl as app"><button class="topcoat-button--large--cta" ng-click="app.toggle = !app.toggle">點我</button><hr/><div class="topcoat-notification toggle" ng-if="app.toggle">I'm too your to fade</div><script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/gsap/1.18.0/TweenMax.min.js"></script><script src="../node_modules/angular/angular.min.js"></script><script src="../node_modules/angular-animate/angular-animate.min.js"></script><script src="app1.js"></script></body></html>
其中，npm install topcoat是一個很好的樣式庫。
使用direcive的方式實現顯示/隱藏動畫效果
是否可以在顯示/隱藏的div部分加上一個屬性，比如hide-me="app.isHidden",hide-me這個屬性監控app.isHidden,根據值的變化情況再來決定是否顯示。
app3.js
var app=angular.module('app',["ngAnimate"]);app.controller("AppCtrl", function(){ this.isHidden = false; this.fadeIt = function(){ //TweenMax.to($("#my-badge"), 1, {opacity:0}) this.isHidden = !this.isHidden; }})app.directive("hideMe", function($animate){ return function(scope, element, attrs){ scope.$watch(attrs.hideMe, function(newVal){ if(newVal){ //TweenMax.to(element, 1, {opacity:0}); $animate.addClass(element, "fade"); } else{ $animate.removeClass(element, "fade"); } }) }})app.animation(".fade", function(){ return { addClass: function(element, className){ TweenMax.to(element, 1, {opacity:0}); }, removeClass: function(element, className){ TweenMax.to(element, 1, {opacity:1}); } }}) index3.html
<!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <title></title> <link rel="stylesheet" href="../node_modules/bootstrap/dist/css/bootstrap.min.css"/></head><body ng-app="app" ng-controller="AppCtrl as app"><button id="my-button" class="btn-primary" ng-click="app.fadeIt()">Click to fade</button><div id="my-badge" class="badge" hide-me="app.isHidden">Fade me</div><script src="../node_modules/jquery/dist/jquery.min.js"></script><script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/gsap/1.18.0/TweenMax.min.js"></script><script src="../node_modules/angular/angular.min.js"></script><script src="../node_modules/angular-animate/angular-animate.min.js"></script><script src="app3.js"></script></body></html>
以上內容是小編給大家介紹的AngularJS中實現顯示或隱藏動畫效果的方式總結，希望大家喜歡。
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