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Questions tagged [angular-arrays]

31 questions
4
votes
3 answers

Copy array of Objects in angular 2

I have two array called 'persons' and 'persons2', The 'persons2' array would to be copy of 'persons' array, But the problem is when I copy it, and I want to change the second array, the first array is also changing. This is my code: export class…
Jack
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1 answer

Create new array from existing array with specifc node values

I have following array: [ { fileName: "test.pdf", fileUrl: "https://test-url1.com/test.pdf", isDeleted: true }, { fileName: "test.pdf", fileUrl: "https://test-url1.com/test.pdf", isDeleted: true } ] Now I need to…
Sam
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2
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1 answer

Angular ngIf: Identifier 'length' is not defined

My component has the property transfers$ that is an observable that can comes with an array or an object that contains the error message. I can only input [items] when transfers$ is Transfer[]. But even using condition
Doug
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2
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1 answer

Angular 9 mapping a json response to array

I have this interface export interface Student { cf: string, firstName: string, lastName: string, dateOfBirth: Date, description?: string, enrollmentDate?: Date } I want to populate an array of students with a http get…
dc_Bita98
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2
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1 answer

Pass the right element's data from ngfor loop to the child component

Im looking to inject the data from a ngfor loop on the parent component into a child component. This child component is supposed to render a modal with the data of the right element in the parent's ngfor loop, when I click on the respective child…
BEvo
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2
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1 answer

Easy way to double bind length of angular array where object has 'true' for a specific property?

I have the following list of students: students = [{name:'Jordan', passed:true}, {name:'Kyle'},{name:'Jess'}, {name:'Sam', passed:true} ] I want to be able to, in an HTML template, get the length of the array where the…
Rolando
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1
vote
1 answer

Hide/Show form field(s) on mat-checkbox check Angular

I am trying to show and hide the search filter input field which is basically my form field with the check of a checkbox that is in my search filter button. I am using *ngIf here to show and hide the field. It doesn't seem to work the issue is, it…
Vishal
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1 answer

I need to convert one of the form arrray in my formGroup

This is my ngOnInit ngOnInit() { this.formGroup = this._formBuilder.group({ basic: this._formBuilder.array([this.basicGroup()]), experience: this._formBuilder.array([this.experienceGroup()]), education:…
Ananthu A Nair
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1 answer

Angular array filter is not working on a list of string

I have an array of string, and want to filter out a particular string after some operation. But, it seems I am doing something wrong there. this.displayUser.followers.filter(userId=>userId !== this.loggedUser.userid); Here, followers is an array of…
Daisy
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1 answer

How can I store value in a nested object array in Angular 8

I am creating an order entry form where we shall store both master and details data. Below I am showing you my entity details which wrote in typescript. export interface IOrder { id: number; customerId: number; …
Shiv Shankar Maiti
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1 answer

Angular ngFor with dynamic adding of objects

Please check the video: https://screencast-o-matic.com/watch/cqQQj2tA22 I'm adding dynamically objects to an array and would like to set the values once the objects are added. Now when I'm adding a new object to the array all the input textboxes in…
Laziale
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1
vote
1 answer

Angular Viewmodels and usage in components

I'm trying to bind viewmodels to a view through component. Initially I did this in the component and it was almost working: model: any = { TenantId: '', CustomFieldName: '', quantities: [] }; quantity: any = { …
Laziale
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2 answers

How display data from json array in angular 7

I have a json data set with arrays from my ASP.net Core web api, i want to show that data in angular html page. can you help me. angular 7 cli home-page.component.ts ngOnInit() { this.serverService.getAllProductData().subscribe( …
Thevin Malaka.
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0
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2 answers

Want to access index of array in angular

I am getting array in this way, check attached image. Now I am trying to display edit icon as this below : { header: 'Edit', field: 'id', view: (value: string, obj: any) => { return `