/Javascript/AngularJS/Angular filter ngfor

Angular filter ngfor

// In your component:
filterargs = {title: 'hello'};
items = [{title: 'hello world'}, {title: 'hello kitty'}, {title: 'foo bar'}];
In your template, you can pass string, number or object to your pipe to use to filter on:

// In your .html:
<li *ngFor="let item of items | myfilter:filterargs">

// In your pipe:
import { Pipe, PipeTransform } from '@angular/core';

@Pipe({
    name: 'myfilter',
    pure: false
})
export class MyFilterPipe implements PipeTransform {
    transform(items: any[], filter: Object): any {
        if (!items || !filter) {
            return items;
        }
        // filter items array, items which match and return true will be
        // kept, false will be filtered out
        return items.filter(item => item.title.indexOf(filter.title) !== -1);
    }
}

// Remember to register your pipe in app.module.ts; 
// you no longer need to register the pipes in your @Component
import { MyFilterPipe } from './shared/pipes/my-filter.pipe';

@NgModule({
    imports: [
        ..
    ],
    declarations: [
        MyFilterPipe,
    ],
    providers: [
        ..
    ],
    bootstrap: [AppComponent]
})
export class AppModule { }

Source: stackoverflow.com

Similar codes

6 votes248 views2 answers
Hide and show in angular 8
Javascript AngularJS
0 vote199 views1 answer
Sorting json array by key in angular 9
Javascript AngularJS
0 vote197 views1 answer
Angular loop through key values in map
Javascript AngularJS
2 votes215 views2 answers
Angular size of array
Javascript AngularJS
0 vote205 views1 answer
Plyr.js example in angular 10
Javascript AngularJS
0 vote195 views3 answers
Angular loop
Javascript AngularJS
0 vote215 views1 answer
Change icon on click angular
Javascript AngularJS
0 vote187 views2 answers
How to remove text style on td in angularjs
Javascript AngularJS
0 vote189 views1 answer
How to install popper.js in angular 9
Javascript AngularJS
0 vote230 views3 answers
Order by ascending descending in angular 6 on click of button
Javascript AngularJS