How to use ng-if to test if a variable is defined

后端未结

关注

 3  1255

隐瞒了意图╮

Is there a way to use ng-if to test if a variable is defined, not just if it\'s truthy?

In the example below (live demo), the HTML displays a shipping cost

相关标签:

3条回答

说谎

2021-02-04 23:47

I edited your plunker to include ABOS's solution.

<body ng-controller="MainCtrl">
    <ul ng-repeat='item in items'>
      <li ng-if='item.color'>The color is {{item.color}}</li>
      <li ng-if='item.shipping !== undefined'>The shipping cost is {{item.shipping}}</li>
    </ul>
  </body>

plunkerFork

0 讨论(0)

情歌与酒

2021-02-04 23:47
You can still use angular.isDefined()

You just need to set
```
$rootScope.angular = angular;
```
in the "run" phase.

See update plunkr: http://plnkr.co/edit/h4ET5dJt3e12MUAXy1mS?p=preview
0 讨论(0)
发布评论:

提交评论
- 加载中...
無奈伤痛

2021-02-04 23:59
Try this:
```
item.shipping!==undefined
```
0 讨论(0)
发布评论:

提交评论
- 加载中...