AngularJS – 基本介紹篇
看完上一篇有關AngularJS的文章之後，如果你已經產生對他的興趣，接下來我們就跟著Google規劃的課程來學習，其實在AngularJS的官方網頁上，本來就有這方面的視訊教學（當然是英文的囉！），馬老師這邊只是做到整理、翻譯和提出我的一些想法，讓想要學習他的人可以更方便，官方視訊總共分成五個等級，每個等級又分成不同章節，章節結束後還都會有模擬測驗，真的推薦大家可以去看看喔！
首先檢視一下要學習AngularJS的一些背景條件：
必須了解的部分指的是技術領域，最好能懂的部分是指開發時的觀念
至於選擇AngularJS的理由有以下幾點：
- 幫助你組織Javascript
- 快速幫你建構動態網站
- 可以跟jQuery合作愉快
- 便於測試
接下來官方教學以ng-controller為案例，教導AngularJS是如何去呼叫函數的，不過這部分在1.3以上的版本已經不是這樣使用了要特別注意！
以下就針對這個案例進行程式的示範，在1.2（含）以前的AngularJS可以這樣來操作ng-controller：（在JS Bin上測試）
<!doctype html>
<html ng-app>
<head>
<script src="//ajax.googleapis.com/ajax/libs/angularjs/1.2.26/angular.min.js"></script>
<meta charset="UTF-8">
<title>controllerExample</title>
<script>
function myFn() {
alert("歡迎光臨馬老師雲端研究室");
}
</script>
</head>
<body ng-controller="myFn">
</body>
</html>
但在1.3（含）之後的AngularJS需要這樣來操作ng-controller：（在JS Bin上測試）
<!doctype html>
<html ng-app="controllerExample">
<head>
<script src="//ajax.googleapis.com/ajax/libs/angularjs/1.3.2/angular.min.js"></script>
<meta charset="UTF-8">
<title>controllerExample AngularJS 1.3.2</title>
<script>
angular.module('controllerExample', [])
.controller('myFn', function (){
alert("歡迎光臨馬老師雲端研究室");
});
</script>
</head>
<body ng-controller="myFn">
</body>
</html>
根據上面的案例，來介紹利用AngularJS開發網頁時的流程和方式：
首先我們可以先建立一個模組（Module），在模組內會包含AngularJS的函式名稱、應用程式名稱（Application Name）和相關函式庫（Dependencies）。
上述的程式可以撰寫在一個JS檔案中，讓網頁將該檔案引用。
接下來在HTML標籤中加入ng-app=”Application Name”後，讓網頁在載入的時候就會自動運行該模組（Module）。
接下來開始介紹表達式，不過這個在上一篇案例當中我們已經有使用過了，相信大家也很容易能夠了解，也建議大家去參考視訊中提到的網頁，裡面有更多有關於表達式的說明。
※以上截圖部分為AngularJS官方教學視訊。
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