/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

3 votes205 views5 answers
Angular img
Javascript AngularJS
0 vote394 views1 answer
Angular number pipe to four decimals
Javascript AngularJS
0 vote238 views1 answer
How to bind two ng-content in a component angular
Javascript AngularJS
0 vote303 views1 answer
Vscode angular: running ngcc
Javascript AngularJS
0 vote251 views1 answer
Get datetime yesterday angular
Javascript AngularJS
0 vote254 views1 answer
Generate angular.json for existing project
Javascript AngularJS
0 vote218 views1 answer
Angular material remove outline
Javascript AngularJS
0 vote255 views2 answers
Zoom map around the marker angular
Javascript AngularJS
0 vote208 views1 answer
Ip address validation regex angular
Javascript AngularJS
0 vote232 views1 answer
O list do AngularFireDatabase não é mais um observable??
Javascript AngularJS