WP Job Manager Field Editor hide/show field based on checkbox field status with jQuery

functions.php

<?php
// ^ there should ONLY be one of these at the top of child theme's functions.php file

add_action( 'submit_job_form_start', 'my_custom_jquery_set_field_readonly' );
function my_custom_jquery_set_field_readonly(){
  /**
   * Replace HIDDENMETAKEY with the meta key of the field you want to hide/show based on checkbox
   * Replace CHECKBOXMETAKEY with the meta key of the checkbox field to use
   */
  echo "<script>
    jQuery( function ( $ ) {

    // Set hidden by default
    $( '.fieldset-HIDDENMETAKEY' ).hide();

    // When checkbox is clicked
    $( '#CHECKBOXMETAKEY' ).click( function () {

      // Check if it's checked
      if ( $( this ).is( ':checked' ) ){
        // And show other field
        $( '.fieldset-HIDDENMETAKEY' ).show();
      } else {
        // Otherwise make sure it's hidden
        $( '.fieldset-HIDDENMETAKEY' ).hide();
      }

    });

  });
  </script>";
}