[AngularJS]8. No images, no gallery, ng-show

Many times a product will be ready to sell, but won't have images yet (like our first one). In this case the images array will just be empty. Note the change in our gems array.

We don't want to display the .gallery element if there are no images. Create an expression on our .gallery div to make this happen.

1. Use the ng-show directive to make sure our image gallery is only displayed if a product has images.

<div class="gallery" ng-show="product.images.length>0">

 

复制代码
<!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 ng-controller="StoreController as store">
    <!--  Products Container  -->
    <div class="list-group">
      <!--  Product Container  -->
      <div class="list-group-item" ng-repeat="product in store.products">
        <h3>
          {{product.name}}
          <em class="pull-right">{{product.price | currency}}</em>
        </h3>

        <!-- Image Gallery  -->
        <div class="gallery" ng-show="product.images.length>0">
          <img class="img img-circle img-thumbnail center-block" ng-src="{{product.images[0]}}" />
          <ul class="clearfix">
            <li class="small-image pull-left thumbnail" ng-repeat="image in product.images"> <img ng-src="{{image}}" /> </li>
          </ul>
        </div>
      </div>
    </div>
  </body>
</html>
复制代码

 

复制代码
(function() {
  var app = angular.module('gemStore', []);

  app.controller('StoreController', function() {
    this.products = gems;
  });

  var gems = [{
    name: 'Azurite',
    description: "Some gems have hidden qualities beyond their luster, beyond their shine... Azurite is one of those gems.",
    shine: 8,
    price: 110.50,
    rarity: 7,
    color: '#CCC',
    faces: 14,
    images: [ ]
  }, {
    name: 'Bloodstone',
    description: "Origin of the Bloodstone is unknown, hence its low value. It has a very high shine and 12 sides, however.",
    shine: 9,
    price: 22.90,
    rarity: 6,
    color: '#EEE',
    faces: 12,
    images: [
      "images/gem-01.gif",
      "images/gem-03.gif",
      "images/gem-04.gif"
    ]
  }, {
    name: 'Zircon',
    description: "Zircon is our most coveted and sought after gem. You will pay much to be the proud owner of this gorgeous and high shine gem.",
    shine: 70,
    price: 1100,
    rarity: 2,
    color: '#000',
    faces: 6,
    images: [
      "images/gem-06.gif",
      "images/gem-07.gif",
      "images/gem-09.gif"
    ]
  }];
})();
复制代码

 

posted @   Zhentiw  阅读(1562)  评论(0)  编辑  收藏  举报
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