Facing an issue where a key has same value in another object in an array of objects. When ngModelChange is trigerred for 2nd one the data obtained in the ts file is of first one. I have data as ...

I added some trackBy functions on *ngFor directives of an Angular project in order to boost performances. There is one component with 2 lists of items. The trackBy function is the same for both lists ...

TL;DR: I already have working solutions, but I would like explanations why mat-select behaves like this. While building an application with Angular Material I run into this error when using mat-select ...

I will be brief. Here's the problem on stackblitz: trackByBugntfree\ Explanation: Resources contain ppermission that are displayed on screen with checkboxes.\ Objective: When a "permission" ...

In this example https://stackblitz.com/edit/angular-ivy-hptdnu?file=src%2Fapp%2Fgrid%2Fgrid.component.html without trackBy the ngOnDestroy hook is triggered and the data updated I can understand it ...

I want the ngFor not to re-render when the id change the index/position on the array. The trackBy method not working as I expected in this situation. Consider code below, In the TS File users: User[]...

I am using track by function in my ionic angular app and while building the app, it gives me error: Type '(index: any, item: any) => any' is missing the following properties from type 'any[]': pop, ...

My question is how to use trackby on Async pipe with images rendering under it. I have done following. in html <div *ngFor="let friend of friends$ | async;trackBy:trackByFn"> <img [...

My component is some what like <div class="users-list" *ngIf="datasetPermission !== undefined"> <div *ngFor="let userpermission of datasetPermission; trackBy : trackByFn"> <...

Our web app uses ngRepeat to display a list of items. The array and its objects are never changed, but values of the objects inside can be modified by the user. We generate a unique trackId's for ...

I have an app in angularjs which uses $interval() in background and requests datas form the database via PHP every seconds. I then use track by $index which really helps on performance. <tr ng-...

Using Ionic3 and virtualScroll works fine when I sort the list in the constructor but when I use a sort button on my page to change the sort order of the list, the sort is done but the list is not ...

i'm having trouble sorting and array that has a trackBy function. The use case is as follows: I have an item array. All these items have a z-index property. I also have a layer manager that can edit ...

Since recently, the Angular styleguide-lint-extender "Codelyzer" is throwing warnings when you do not have a trackBy-function implemented on every *ngFor. I am wondering why this is considered an ...

// this.data = [{value: 'damon'}]; // this.dataOrf = [{value: 'damon'}, {value: 'mean'}] <md-select multiple ng-model="$ctrl.data" aria-label="data"> <md-option ng-value="opt" ng-repeat="...