How filter array with different parameters using pipes

Question

My JSON file called employee looks like this:

[
    {
        "id": "E01",
        "name": "neetha",
        "age": 20,
        "gender": "female",
    },
    {
        "id": "E02",
        "name": "Kiran",
        "age": 24,
        "gender": "male",
    },
   {
        "id": "E03",
        "name": "Jhon",
        "age": 28,
        "gender": "male",
    }   
]

I have an component called list where i am filtering this employees with their names using custom pipes like this:

list.component.html

<div>
    <mat-form-field>
        <input matInput [(ngModel)]="searchTerm"  placeholder="Search">
    </mat-form-field>
    <mat-selection-list class="list">
        <mat-list-option   *ngFor="let employee of employees | employeeFilter : searchTerm; let i=index">
            <a mat-list-item (click)="onSelect(employee,i)"><span>{{employee.name}}</span></a>
        </mat-list-option>
    </mat-selection-list>
</div>

employee-filter.pipe.ts

import { PipeTransform, Pipe } from '@angular/core';
import { Employee } from '../models/employee.model';

@Pipe({
    name: 'employeeFilter'
})
export class EmployeeFilterPipe implements PipeTransform {
    transform(employees: Employee[], searchTerm: string): Employee[] {
        if (!employees || !searchTerm) {
            return employees;
        }

        return employees.filter(employee =>
            employee.name.toLowerCase().indexOf(searchTerm.toLowerCase()) !== -1);
    }
}

Now the i am filtering using the name property, but i want to filter using age,gender along with name. Using the same input field i want to filter. How can i achieve this?

Answer 1

Just use or operator ||

return employees.filter(employee =>
            employee.name.toLowerCase().indexOf(searchTerm.toLowerCase()) !== -1)
|| employee.age.toLowerCase().indexOf(searchTerm.toLowerCase()) !== -1)
|| employee.gender.toLowerCase().indexOf(searchTerm.toLowerCase()) !== -1)
);