passing variable - shows invalid variable ...

What version of CodeIgniter 4 are you running?

Another thing you can try is this:

PHP Code:

// Views/data.php

<?php


// Controller

public function index()
{
    $data = [
        'js_to_load' => 'Testing'
    ];

    return view('data', $data)
        . view('your_view');
} 


Did you try passing it like this?

PHP Code:

$data["js_to_load"] = "hello"; 


What did you Try? What did you Get? What did you Expect?

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