How to connect a button to the search bar?

Question

JavaScript

Please tell me how to connect the button to the search bar.
The button is in a pop-up window, after selecting the parameters in the window, the text of the parameters is entered into the search bar and when you click on the "Apply" button, you need to start the search (when you close the window and press Enter, the search works, it is also necessary when you click on the "Apply"

button search:

<div class="element-search">
             <div class="nav-search">
            <span class="search-icon"><?php echo $nav_top_search_icon; ?></span>
         
         <input id="text-se"  grid_id="<?php echo $grid_id; ?>" title="<?php echo __('Press enter to reset', 'post-grid'); ?>" class="search" type="text"  placeholder="<?php echo $nav_top_search_placeholder; ?>" value="<?php echo $keyword; ?>">
         
        </div>
        </div>

Button code:

<button type="button" id="btn-on" class="element-button">Применить</button>