angularjs-ng-if | 易学教程

How make ngIf directive globally visible in all project?

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问题 I have a code <div class="flex-container" *ngIf="mail"> Some data </div> And i have a error Can't bind to 'ngIf' since it isn't a known property of 'div'. How i can fix it? 回答1: Import BrowserModule in the root module and CommonModule in other modules where you want to use common directives. @NgModule({ imports: [BrowserModule], ... }) class AppModule {} and @NgModule({ imports: [CommonModule], // Now MyComponent has access to ngIf declarations: [MyComponent] ... }) class OtherModule {}

Show a link based on a condition in angularJS

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问题 I'm creating a navigation bar in AngularJS. I am showing and hiding the submenu 'div.farm-links' on mouseover and mouseleave respectively on 'div.menu-links'. Now, in my submenu whenever 'child.thirdLevelChildList.length' is more than 5, it should show 5th link as 'View all' and hide all the remaining links. Else, it should show all the links. For e.g., on mouse hovering 'about abc', under 'Company', I should see only : 'Strategy', 'Mission, Vision, Values', 'Leadership', 'Org chart' & the

Why does ng-mouseover not work with ng-if

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问题 I'm trying to use "ng-mouseover" directive on an image that has "ng-if" and it doesn't work but If I use "ng-show" directive it works, can everyone tell me why? Or it's an AngularJS problem? In the AngularJS documentation, I can't read anything about it: https://docs.angularjs.org/api/ng/directive/ngMouseover ng-show <button ng-show="true" ng-mouseover="countOne = countOne + 1" ng-init="countOne=0"> Increment (when mouse is over) </button> Count: {{countOne}} ng-if <button ng-if="true" ng

Using ng-if as a switch inside ng-repeat?

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I am working on Angular app. I tried to use ng-if and switch inside ng-repeat but didn't succeed. I have data like: **[{"_id":"52fb84fac6b93c152d8b4569", "post_id":"52fb84fac6b93c152d8b4567", "user_id":"52df9ab5c6b93c8e2a8b4567", "type":"hoot",}, {"_id":"52fb798cc6b93c74298b4568", "post_id":"52fb798cc6b93c74298b4567", "user_id":"52df9ab5c6b93c8e2a8b4567", "type":"story",}, {"_id":"52fb7977c6b93c5c2c8b456b", "post_id":"52fb7977c6b93c5c2c8b456a", "user_id":"52df9ab5c6b93c8e2a8b4567", "type":"article",},** $scope.comments = data mentioned above and my Html like : <div ng-repeat = "data in

Using ng-if as a switch inside ng-repeat?

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问题 I am working on Angular app. I tried to use ng-if and switch inside ng-repeat but didn\'t succeed. I have data like: **[{\"_id\":\"52fb84fac6b93c152d8b4569\", \"post_id\":\"52fb84fac6b93c152d8b4567\", \"user_id\":\"52df9ab5c6b93c8e2a8b4567\", \"type\":\"hoot\",}, {\"_id\":\"52fb798cc6b93c74298b4568\", \"post_id\":\"52fb798cc6b93c74298b4567\", \"user_id\":\"52df9ab5c6b93c8e2a8b4567\", \"type\":\"story\",}, {\"_id\":\"52fb7977c6b93c5c2c8b456b\", \"post_id\":\"52fb7977c6b93c5c2c8b456a\", \"user

What is the difference between ng-if and ng-show/ng-hide

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问题 I\'m trying to understand the difference between ng-if and ng-show / ng-hide , but they look the same to me. Is there a difference that I should keep in mind choosing to use one or the other? 回答1: ngIf The ngIf directive removes or recreates a portion of the DOM tree based on an expression. If the expression assigned to ngIf evaluates to a false value then the element is removed from the DOM, otherwise a clone of the element is reinserted into the DOM. <!-- when $scope.myValue is truthy