trying to open a new tab in the browser

I was wrong regarding that you should use a function to execute this line

window.open('https://duckduckgo.com/?t=ffab', '_blank');


i tried it directly in the controller and it worked


<?php namespace App\Controllers;

use CodeIgniter\Controller;

class Controller1 extends Controller
{
    public function index()
    {
        echo "
            <script>
                window.open('https://duckduckgo.com/?t=ffab', '_blank');
            </script>
            ";
    }   

}


but firefox told me that its preventing popups , so i enabled them for localhost , maybe you are disabling them.

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