JetFormBuilder currency mask

code.php

<?php

class JFB_Currency_Mask {
	
	private $processed = false;
	
	public function __construct() {
		add_filter( 'jet-form-builder/render/text-field/attributes', array( $this, 'process_fields' ), 10, 2 );
	}
	
	public function process_fields( $attrs, $field ) {
		if ( $this->processed ) {
			return $attrs;
		}
		
		if ( false !== strpos( $field->block_type->block_attrs['class_name'], 'currency-mask' ) ) {
			wp_enqueue_script(
				'jet-form-builder-inputmask',
				\Jet_Form_Builder\Plugin::instance()->plugin_url( 'assets/lib/inputmask/jquery.inputmask.min.js' ),
				array( 'jquery' ),
				\Jet_Form_Builder\Plugin::instance()->get_version(),
				true
			);
			
			$this->add_inline_script();
			
			$this->processed = true;
		}
		
		return $attrs;
	}
	
	private function add_inline_script() {
		ob_start();
		?>
			jQuery( document ).on( 'jet-form-builder/after-init', function( $ ) {
				jQuery( "input.currency-mask" ).inputmask( {
					prefix: "$ ",
					groupSeparator: ",",
					autoUnmask: true,
					alias: "numeric",
					digits: 2,
					digitsOptional: 1,
					max: 9999999
				} );
			} );
		<?php
		$script = ob_get_clean();
		
		wp_add_inline_script(
			'jet-form-builder-inputmask',
			$script,
			'after'
		);
	}
	
}

new JFB_Currency_Mask();