Use pipe in ts file angulr

Pipe angular typescript

import { YourPipeComponentName } from 'your_component_path';

class YourService {

  constructor(private pipe: YourPipeComponentName) {}

  YourFunction(value) {
    this.pipe.transform(value, 'pipeFilter');
  }
}

Source: stackoverflow.com

Use pipe in ts file angulr

// pipe.ts
@Pipe({ name: 'filter', pure: true })
export class FilterPipe{
  transform(items: any[], args: any): any {
    let filter = args.toString();
    if(filter !== undefined && filter.length !== null){
        if(filter.length === 0 || items.length ===0){
            return items;
        }else{
            return filter ? items.filter(item=> item.title.toLocaleLowerCase().indexOf(filter) != -1) : items;
        }
    }
  }
}
// component.ts (Use in your typescript code)
const filterPipe = new FilterPipe();
const fiteredArr = filterPipe.transform(chkArray,txtSearch);
// 

First import your pipe in component. And then use your pipe in your component. Like this..

pipe.ts

/**
 * filter checkbox list
 */
@Pipe({ name: 'filter', pure: true })
export class FilterPipe{
  transform(items: any[], args: any): any {
    let filter = args.toString();
    if(filter !== undefined && filter.length !== null){
        if(filter.length === 0 || items.length ===0){
            return items;
        }else{
            return filter ? items.filter(item=> item.title.toLocaleLowerCase().indexOf(filter) != -1) : items;
        }
    }
  }
}

component.ts (Use in your typescript code)

const filterPipe = new FilterPipe();
const fiteredArr = filterPipe.transform(chkArray,txtSearch);

// xyz.html (Use in your html file)
<ul>
    <li *ngFor="todo for todos | filter:'txtsearch'"> {{todo.name}} </li>
</ul>

Source: stackoverflow.com

Similar codes

0 vote150 views1 answer
Check restore percentage tsql
TypeScript
1 vote148 views1 answer
Npm type-check nested arrays
TypeScript
0 vote166 views1 answer
Error: either specify it explicitly with --sdk_root= or move this package into its expected location: <sdk>/cmdline-tools/latest/
TypeScript
0 vote161 views1 answer
If image is broken show alternative image angular
TypeScript
0 vote166 views1 answer
Update object in array in ngxrx store in angular
TypeScript
0 vote171 views2 answers
Open ports on RPI
TypeScript
0 vote166 views1 answer
Update a xml document if its not empty on c#
TypeScript
1 vote154 views3 answers
Creating a promise
TypeScript
0 vote159 views1 answer
Angular material date picker add dates automatically
TypeScript
5 votes164 views5 answers
Combine two lists c#
TypeScript