Filtering data in Angular from an HTML source

Question

Filtering data in Angular from an HTML source

Looking to filter a simple list I have.

For example:

<div *ngFor="let x of data"></div>

Example data:

  data = [
        {
         "img" : "assets/img/photos/05.jpg",
         "title" : "Denim Jeans",
         "overview": "today"    
        },
        {
         "img" : "assets/img/photos/05.jpg",
         "title" : "Denim jacket",
         "overview": "month"

        },
];

I only want to display items with the overview field set to month.

The expected implementation would be something like this:

*ngFor = "let x of data == overview"

angular typescript

Answer 1

Answer №1

Check out this solution:

<ng-container *ngFor="let x of data">
  <div *ngIf="x.overview === 'month'">
    <p>{{ x.title }}</p>
  </div>
</ng-container>

The ng-container acts as a way to apply logic like conditions or loops without creating an additional element in the HTML structure.

In this scenario, the container iterates through each item in the array while the inner div determines if it should be displayed based on the value of x.overview.

Answer 2

Check out this solution:

<ng-container *ngFor="let x of data">
  <div *ngIf="x.overview === 'month'">
    <p>{{ x.title }}</p>
  </div>
</ng-container>

The ng-container acts as a way to apply logic like conditions or loops without creating an additional element in the HTML structure.

In this scenario, the container iterates through each item in the array while the inner div determines if it should be displayed based on the value of x.overview.

Answer 3

Answer №2

To efficiently filter data, you can create a custom pipe as shown in the example below:

<div *ngFor="let item of (data | customFilter)">
   {{item}}
</div>

import { Pipe, PipeTransform } from '@angular/core';

@Pipe({ name: 'customFilter' })
export class CustomFilterPipe implements PipeTransform {
  transform(dataToFilter: any[]) {
    return dataToFilter.filter(item => item.filterProperty === 'value');
  }
}

For more information on pipes in Angular, visit https://angular.io/guide/pipes

Answer 4

To efficiently filter data, you can create a custom pipe as shown in the example below:

<div *ngFor="let item of (data | customFilter)">
   {{item}}
</div>

import { Pipe, PipeTransform } from '@angular/core';

@Pipe({ name: 'customFilter' })
export class CustomFilterPipe implements PipeTransform {
  transform(dataToFilter: any[]) {
    return dataToFilter.filter(item => item.filterProperty === 'value');
  }
}

For more information on pipes in Angular, visit https://angular.io/guide/pipes

Filtering data in Angular from an HTML source

Answer №1

Answer №2

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