wp php JSON

JSON.php

<?php 

    public function __construct()
    {
            add_action('print_footer_scripts',  array($this,'print_script_addsdgsdgsd'), 99);
        
    }
    public function print_script_addsdgsdgsd()
    {
        if( !empty($this->elements)){
            ?>
             <script type="text/javascript">
                var elements =  JSON.parse('<?php print json_encode($this->elements)?>' );
             </script>
             <?php
        }

    }