在AngularJS NG-REPEAT循环内绑定NG-模型 [英] Binding ng-model inside ng-repeat loop in AngularJS

问题描述

我想处理范围的NG-repeat循环内的问题 - 我浏览了​​不少问题，但还没有完全能够得到我的code工作。

I'm trying to deal with the issue of scope inside of an ng-repeat loop - I've browsed quite a few questions but have not quite been able to get my code to work.

控制器code：

function Ctrl($scope) {
  $scope.lines = [{text: 'res1'}, {text:'res2'}];
}

查看：

<div ng-app>
     <div ng-controller="Ctrl">
       <div ng-repeat="line in lines">
           <div class="preview">{{text}}{{$index}}</div>

       </div>
       <div ng-repeat="line in lines">
           <-- typing here should auto update it's preview above -->
           <input value="{{line.text}}" ng-model="text{{$index}}"/>
            <!-- many other fields here that will also affect the preview -->
       </div>
     </div>
    </div>

下面是一个小提琴： http://jsfiddle.net/cyberwombat/zqTah/

基本上我有一个对象（这是一个宣传单生成器），其中包含多行文本。文本的每一行可以由用户（文字，字体，大小，颜色等）进行调整，我想创建一个preVIEW它。只有上面的例子显示输入字段输入文字，我想，要自动/为你型更新preVIEW格但会有更多的控制。

Basically I have an object (it's a flyer generator) which contains multiple lines of text. Each line of text can be tweaked by the user (text, font, size, color, etc) and I want to create a preview for it. The example above only shows the input field to enter text and I would like that to automatically/as-you-type update the preview div but there will be many more controls.

我也不能肯定我得到了循环指数code正确 - 是最好的办法，以在循环中创建一个NG-型号名称

I am also not sure I got the code right for the looping index - is that the best way to create a ng-model name inside the loop?

推荐答案

对于NG重复循环的每个迭代，行是数组中的对象的引用。因此，preVIEW值，使用 {{} line.text} 。

For each iteration of the ng-repeat loop, line is a reference to an object in your array. Therefore, to preview the value, use {{line.text}}.

同样，数据绑定到文本，数据绑定到相同的： NG-模式=line.text。你并不需要使用值使用时NG-模型（其实你不应该）。

Similarly, to databind to the text, databind to the same: ng-model="line.text". You don't need to use value when using ng-model (actually you shouldn't).

小提琴。

对于更深入地了解范围和NG-重复，请参阅What范围是原型/原型继承的细微差别AngularJS？，部分 NG-重复

For a more in-depth look at scopes and ng-repeat, see What are the nuances of scope prototypal / prototypical inheritance in AngularJS?, section ng-repeat.

这篇关于在AngularJS NG-REPEAT循环内绑定NG-模型的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！