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Lesson Get Started with Angular.js

Rafael J. Rodriguez edited this page May 17, 2016 · 1 revision

Creating Modules

To create a module we first create a variable for the app, then we will use the angular library to create a module, we give it a name and an array of dependencies, it can be an empty array if there are no dependencies.

var app = angular.module('store', []);

Don't forget to add the library to the html though.

Including the module

This is very simple, you just have to add it as any other script or library, add a link to the <body>

<body>
  <script type="text/javascript" src="app.js"></script>
</body>

Then on the <html> tag we include np-app="store"

Expressions

They allows us to insert dynamic values into our HTML.

<p>
  I am {{4 + 6}}
</p>

This will be the same as <p>I am 10</p>

It also works for strings too. There are more examples here.

Controllers

Controllers are where we define out app's behavior by defining functions and values.

(function(){
  var app = angular.module('store', []);

  app.controller('StoreController', function(){
    this.product = gem;
});
})();

This will do the magic in this scope only.

<div ng-controller="StoreCOntroller as store">
  <h1> {{store.product.name}} </h1>  //display the name
  <h2> ${{store.product.price}} </h2> //display price
  <p> {{store.product.description}} </p> //displays description
</div>

Show and Hide Buttons

<!DOCTYPE html>
<html ng-app="gemStore">
  <head>
    <link rel="stylesheet" type="text/css" href="bootstrap.min.css" />
    <script type="text/javascript" src="angular.min.js"></script>
    <script type="text/javascript" src="app.js"></script>
  </head>
  <body class="container" ng-controller="StoreController as store">
    <div class="product row" ng-hide="store.product.soldOut">
      <h3>
        {{store.product.name}}
        <em class="pull-right">${{store.product.price}}</em>
      </h3>
      <button ng-show="store.product.canPurchase">Add to Cart</button>
    </div>
  </body>
</html>
(function() {
  var app = angular.module('gemStore', []);

  app.controller('StoreController', function(){
    this.product = gem;
  });

  var gem = {
    name: 'Azurite',
    price: 110.50,
    canPurchase: false,
    soldOut: true
  };
})();

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