Enable SearchWP Live Search on any search form input manually

gistfile1.phtml

<?php
  // if your form is generated using get_search_form() you do not need to do this
  // as SearchWP Live Search does it automatically out of the box
?>

<form action="" method="get">
  <p>
    <label for="s"><?php _e( 'Search' , 'mytextdomain' ); ?></label>
    <input type="text" name="s" id="s" value="" data-swplive="true" /> <!-- data-swplive="true" enables SearchWP Live Search -->
  </p>
  <p>
    <button type="submit"><?php _e( 'Search' , 'mytextdomain' ); ?></button>
  </p>
</form>