javascript - 如何使用 jquery 在 Angular 中选择具有 ng-class attr 的元素

Question

全部:

假设我有一个类似的模板:

<input ng-repeat="d in data track by $index" ng-class="parent{{$index}}" />

它呈现为

<input ng-repeat="d in data track by $index" ng-class="parent0" class="ng-pristine ng-untouched ng-valid ng-scope">

但是当我使用 $(".parent0") 时，没有选择任何内容。

所以我想知道如何选择 ng-class 指定的元素？

谢谢

Answer 1

表达式应返回一个字符串:

ng-class="'parent{{$index}}'"

使用第一点:

The directive operates in three different ways, depending on which of three types the expression evaluates to:

1. If the expression evaluates to a string, the string should be one or more space-delimited class names.

2. If the expression evaluates to an object, then for each key-value pair of the object with a truthy value the corresponding key is used as a class name.

3. If the expression evaluates to an array, each element of the array should either be a string as in type 1 or an object as in type 2. This means that you can mix strings and objects together in an array to give you more control over what CSS classes appear. See the code below for an example of this.

Docs

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