The functionality of ng-show becomes compromised when used in conjunction with ng-animate

Once the animate module is activated, the ng-show functionality seems to stop working. Even though the default value for the ng-show expression is set to false, the element is still displayed and the ng-hide class is not being applied. However, if I deactivate the animate module, everything works as expected.

<script>
var app=angular.module('app', ['ngRoute','ngCookies','infinite-scroll','ui.mask','ngAnimate']);
</script>

Answer №1

Encountering the same issue, it seems to be related to a timing problem, but there is a workaround available. Essentially, there seems to be a conflict between a class defined in the "class" attribute with interpolation, and other directives on the same element that attempt to introduce another class. By removing the class="{{::item.customClass}}", the ng-class and ng-show directives function properly.

While I was unable to replicate the issue on a plunker due to the complexity of the components involved, we utilize services such as $templateCache, modules like ngAnimate, and a directive incorporating ng-repeat with dynamic class and ng-show (among others, which didn't seem to impact the problem). Removing any of these elements resolved the issue. One option I haven't explored yet is detaching the code from the ui-view hierarchy, suspecting that ui-router could be contributing to the problem.

Upon debugging, it was observed that following the execution of the ng-class/ng-show watch, the appropriate class was added initially as:

class="{{::item.customClass}} ng-hide"
, however by the end of the digest cycle, it appeared as: class="myCustomClass". This is likely the situation you are also encountering.

To manage this situation, I relocated item.customClass to the ng-class section as follows:

ng-class=[{ ... other classes}, item.customClass]

This serves as a temporary fix rather than a definitive solution due to:

  1. The likelihood of an underlying issue within Angular's codebase.
  2. A lack of knowledge on implementing bind once here, despite its significance.

Answer №2

Check out the capabilities of animate.css. It is compatible with Angular and can be activated using the 'ng-show' class.

For example:

<div class="animated fadeInRight" data-ng-class="loginShow">

If you assign $scope.loginShow to 'ng-show' in your controller, it will automatically trigger the animation effect.

To activate the animation effect on 'ng-hide', you need to include the following code in your controller:

$scope.loginShow = 'ng-hide-add animated fadeOutRight';

I hope this information proves useful!

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