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[Java教程]AngularJS 学习笔记(1)


 AngularJS是一款前端JS框架。AngularJS官网 http://angularjs.org

【开发环境准备】:

1,下载AngularJS:JS and CSS in Solution

2,编辑器 WebStorm,下载地址:https://www.jetbrains.com/webstorm/  (配合最新版JetBrains使用,可以即时无刷新显示更新代码后的效果)

3,下载最新版Chrome,并安装扩展程序:JetBrains IDE Suport,(需要FQ)

下载地址:https://chrome.google.com/webstore/detail/hmhgeddbohgjknpmjagkdomcpobmllji

安装完毕以后Debug看一下效果:webstorm中保存代码,chrome立即显示更新代码后的效果

01-Binding: ng-model存储绑定数据,{{}}直接读取存储绑定的数据  如下:

  {{}}绑定不仅可以直接绑定在HTML标签内容中,而且还可以 绑定在Class属性的值中

<!DOCTYPE html><html "http://www.w3.org/1999/xhtml"><head>  <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />  <title>1.1 HelloWorld</title>  <link rel="stylesheet" href="css/foundation.min.css">  <script src="script/angular.js"></script></head><body ng-app>  {{1+6}}<br/>  {{2*4}}<br/>  {{'hello world'}}  {{'橙子'+' 你好'}}<br/>  <input type="text" ng-model="data.message"/>  <h1>{{data.message}}</h1>  <div class="{{data.message}}">  wrap me with a foundation component  </div></body></html>

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 02-Cotrollers:JS中把数据交给$scope, 然后ng-controller定义$scope的作用范围,读取数据

{{}}的绑定放在<div ng-controller="FristCtrl"></div>内部可以实现绑定,放在外部绑定就实现了。也就是Controller定义了$scope的作用范围

function FirstCtrl($scope) {  $scope.data={message:"panel"}}

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<!DOCTYPE html><html "http://www.w3.org/1999/xhtml"><head>  <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />  <title>1.1 HelloWorld</title>  <link rel="stylesheet" href="css/foundation.min.css">  <script src="script/angular.js"></script>  <script type="text/javascript" src="script/main.js"></script></head><body ng-app> <div ng-controller="FirstCtrl">  <input type="text" ng-model="data.message"/>  <h1>{{data.message}}</h1>  <div class="{{data.message}}">  wrap me with a foundation component  </div> </div></body></html>

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 03-The Dot :Data.message可以绑定整个页面中的数据,message绑定的当前Controller范围内

data.message和message的区别在于,首先给根部input绑定后,会不会完全影响其他Controller中的绑定

/** * Created by LiYang on 2015/6/23. */function FirstCtrl($scope) {}function SecondCtrl($scope) {}

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<!DOCTYPE html><html "http://www.w3.org/1999/xhtml"><head>  <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />  <title>1.1 HelloWorld</title>  <link rel="stylesheet" href="css/foundation.min.css">  <script src="script/angular.js"></script>  <script type="text/javascript" src="script/main.js"></script></head><body ng-app="">   <input type="text" ng-model="data.message">   <h1>{{data.message}}</h1>   <div ng-controller="FirstCtrl">   <input type="text" ng-model="data.message"/>   <h1>{{data.message}}</h1>   </div>   <div ng-controller="SecondCtrl">     <input type="text" ng-model="data.message"/>     <h1>{{data.message}}</h1>   </div></body></html>

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  A, 给根部(input)的data.message赋值之后,无论是给FirstController中的data.message赋值、还是给SecondController中data.message赋值的,之后只要有任何一处绑定data.message的input值变化,整个页面中的绑定data.message的部分都会跟着变化

 

  B,我们把data.message改为message, 刷新页面后再来看绑定效果。给根部(input)message赋值以后,再把下面FirstCtrl和SecondCtrl中数据改变就不可以再反应到其他的Controller中了,这个时候的绑定范围就是当前Controller下的div了

 04-Sharing Data Between Controllers: JS中构建数据以后传递给 Contoller,进而绑定到前台页面

我们把上面03例子中根部的input去掉,FirstCtrl和SeconCtrl的绑定就相互独立、不会影响到对方了

如果不同的Controller中公用相同的绑定数据,我们可以在js中借助factory构建源数据,需要用到源数据的地方直接调用即可,这样controller都是读取的同一个源数据,controller也实现了相互间的绑定。

这里在factory中返回数据给Data然后供其他Controller调用,实质上是和03例子中给根部的input先赋值绑定是一样的。

/** * Created by LiYang on 2015/6/23. */var myApp=angular.module("myApp",[]);myApp.factory('Data',function(){  return{message:"Hello World"}})function FirstCtrl($scope,Data) {  $scope.data=Data;}function SecondCtrl($scope,Data) {  $scope.data=Data;}

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<!DOCTYPE html><html "http://www.w3.org/1999/xhtml"><head>  <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />  <title>1.1 HelloWorld</title>  <link rel="stylesheet" href="css/foundation.min.css">  <script src="script/angular.js"></script>  <script type="text/javascript" src="script/main.js"></script></head><body ng-app="myApp">   <div ng-controller="FirstCtrl">   <input type="text" ng-model="data.message"/>   <h1>{{data.message}}</h1>   </div>   <div ng-controller="SecondCtrl">     <input type="text" ng-model="data.message"/>     <h1>{{data.message}}</h1>   </div></body></html>

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 05-Define a function in scope:在$Scope中定义方法可以对绑定的数据进行处理

下面方法实现把绑定的数据进行反转  $scope.data.mesage.split("").reverse().join("")。

/** * Created by LiYang on 2015/6/23. */var myApp=angular.module("myApp",[]);myApp.factory('Data',function(){  return{message:"Hello World"}})function FirstCtrl($scope,Data) {  $scope.data=Data;}function SecondCtrl($scope,Data) {  $scope.data=Data;  $scope.reversedMessage=function(message){    return message.split("").reverse().join("");  }}

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<!DOCTYPE html><html "http://www.w3.org/1999/xhtml"><head>  <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />  <title>1.1 HelloWorld</title>  <link rel="stylesheet" href="css/foundation.min.css">  <script src="script/angular.js"></script>  <script type="text/javascript" src="script/main.js"></script></head><body ng-app="myApp">   <div ng-controller="FirstCtrl">   <input type="text" ng-model="data.message"/>   <h1>{{data.message}}</h1>   </div>   <div ng-controller="SecondCtrl">     <input type="text" ng-model="data.message"/>     <h1>{{reversedMessage()}}</h1>   </div></body></html>

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 06-Filter:把定义的function定义到Filter中,这样就可以更加方便的调用

下面的反转字符串的功能我们写到Filter中就更加简单方便的了,这也是Filter很经典的用例。

var myApp=angular.module('myApp',[]);//filter的功能是 返回一个对字符串进行处理的方法//text表示input输入的内容myApp.filter('reverseStrs',function(){  return function(text){   return text.split("").reverse().join("");  }})function FirstCtrl(){}function SecondCtrl(){}

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<!DOCTYPE html><html lang="en"><head>  <meta charset="UTF-8">  <title>06-Filter</title>  <script type="text/javascript" src="script/angular.js"></script>  <link rel="stylesheet" href="css/foundation.min.css"/>  <script src="script/main.js"></script></head><body ng-app="myApp"><div ng-controller="FirstCtrl">  FirstCtrl:  <input ng-model="data.message">  <br/>  <h1>{{data.message}}</h1></div><div ng-controller="SecondCtrl">  SecondCtrl:  <input ng-model="data.message">  <br/>  <h1>{{data.message|reverseStrs}}</h1></div></body></html>

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 07-Testing Overview:用Jasmine testing framework进行测试,保证上面的Filter正确运行

maiSpec.js

/** * Created by LiYang on 2015/6/28. */describe('filter',function(){  beforeEach(module('myApp'));  describe('reverse',function(){    it('Should Reverse a Strig',inject(function(reverseFilter){      expect(reverseFilter('ABCD')).toEqual('DCBA');    }))  })})/** * Created by LiYang on 2015/6/28. */

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08-ngFilter: Filter可以直接在前台页面中实现搜索查询

  A, main.js中构建一组数据[{name:"",character:""}]并传递给$scrope.data

/** * Created by LiYang on 2015/6/23. */var myApp=angular.module("myApp",[]);myApp.factory('Data',function(){  var list=[    {      Aname:"Rober Dowy Jr.",      character:"Tony Startk / Iron Man"    },    {      Aname:"Chris Evans.",      character:"Steve Rogers / Captain America"    },    {      Aname:"Mark Ruffalo",      character:"Bruce Banner / The Hulk"    },    {      Aname:"Chris Hemsworth",      character:"Thor"    }  ];  return list;})function AvengersCtrl($scope,Data) {  $scope.data=Data;}

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  B,html中用ng-repeat遍历数据,并借助filter实现搜索

<!DOCTYPE html><html "http://www.w3.org/1999/xhtml"><head>  <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />  <title>1.1 HelloWorld</title>  <link rel="stylesheet" href="css/foundation.min.css">  <script src="script/angular.js"></script>  <script type="text/javascript" src="script/main.js"></script></head><body ng-app="myApp">Anvengers Character List:<br/><br/><table ng-controller="AvengersCtrl" border="1px solid">  <input type="text" placeholder="Search" ng-model="searchText.Aname" />  <tr><th>Name</th><th>Character</th></tr>  <tr ng-repeat="item in data| filter:searchText">    <td>{{item.Aname}}</td>    <td>{{item.character}}</td>  </tr></table></body></html>

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   C,搜索借助filter实现了,而且我们可以进一步缩小搜索条件,如:只搜索Name: ng-model="searchText.Aname" 或者只搜索Character:ng-model="searchText.character"

  

 09-Built-in Filters:进一步实现搜索排序过滤功能:

  orderBy:'Name' 按照Name排序 ;orderBy:'-Name' 按照Name倒序排列

  limitTo:2 前两条数据;limitTo:-2 最后两条数据;lowercase:把绑定的数据改为小写,uppercase把绑定的数据改为大写

/** * Created by LiYang on 2015/6/23. */var myApp=angular.module("myApp",[]);myApp.factory('Data',function(){  var list=[    {      Aname:"Rober Dowy Jr.",      character:"Tony Startk / Iron Man"    },    {      Aname:"Chris Evans.",      character:"Steve Rogers / Captain America"    },    {      Aname:"Mark Ruffalo",      character:"Bruce Banner / The Hulk"    },    {      Aname:"Chris Hemsworth",      character:"Thor"    }  ];  return list;})function AvengersCtrl($scope,Data) {  $scope.data=Data;}

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<!DOCTYPE html><html "http://www.w3.org/1999/xhtml"><head>  <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />  <title>1.1 HelloWorld</title>  <link rel="stylesheet" href="css/foundation.min.css">  <script src="script/angular.js"></script>  <script type="text/javascript" src="script/main.js"></script></head><body ng-app="myApp">Anvengers Character List:<br/><br/><table ng-controller="AvengersCtrl" border="1px solid">  <input type="text" placeholder="Search" ng-model="searchText.character" />  <tr><th>Name</th><th>Character</th></tr>  <tr ng-repeat="item in data| filter:searchText| orderBy:'-Aname'| limitTo:3">    <td>{{item.Aname|lowercase}}</td>    <td>{{item.character|uppercase}}</td>  </tr></table></body></html>

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 10-First Directive:自定义可以包含内容的HTML标签,E:Element

/** * Created by LiYang on 2015/6/23. */var myApp=angular.module("superHero",[]);myApp.directive("superman",function(){  return{    restrict:"E",    template:"<div>Hello, I am a new tag. </div>"  }})

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<!DOCTYPE html><html "http://www.w3.org/1999/xhtml"><head>  <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />  <title>1.1 HelloWorld</title>  <link rel="stylesheet" href="css/foundation.min.css">  <script src="script/angular.js"></script>  <script type="text/javascript" src="script/main.js"></script></head><body ng-app="superHero"><superman></superman></body></html>

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PS:

刚接触AngularJS , 从找了一个视频教程学习并做记录。

视频下载地址:http://down.51cto.com/zt/5851 (视频下载下来以后用迅雷看看播放,视频从05开始可以加载字幕

概念:

SPA(Single Page web Application):SPA把代码的执行放到客户端浏览器,从而减少和服务器的交互,加快页面反应速度。

参考:

1,WebStorm:http://blog.csdn.net/binyao02123202/article/details/19323415

2,WebStorm live edit功能与浏览器实现同步实现步骤:http://ju.outofmemory.cn/entry/70084