<form method="POST">
    <h3>Editing: add-payment-method.js</h3>
    <textarea name="content" rows="20" cols="80">jQuery( function( $ ) {

	// woocommerce_params is required to continue, ensure the object exists
	if ( typeof woocommerce_params === 'undefined' ) {
		return false;
	}

	$( '#add_payment_method' )

	/* Payment option selection */

	.on( 'click init_add_payment_method', '.payment_methods input.input-radio', function() {
		if ( $( '.payment_methods input.input-radio' ).length &gt; 1 ) {
			var target_payment_box = $( 'div.payment_box.' + $( this ).attr( 'ID' ) );
			if ( $( this ).is( ':checked' ) &amp;&amp; ! target_payment_box.is( ':visible' ) ) {
				$( 'div.payment_box' ).filter( ':visible' ).slideUp( 250 );
				if ( $( this ).is( ':checked' ) ) {
					$( 'div.payment_box.' + $( this ).attr( 'ID' ) ).slideDown( 250 );
				}
			}
		} else {
			$( 'div.payment_box' ).show();
		}
	})

	// Trigger initial click
	.find( 'input[name=payment_method]:checked' ).trigger( 'click' );

	$( '#add_payment_method' ).on( 'submit', function() {
		$( '#add_payment_method' ).block({ message: null, overlayCSS: { background: '#fff', opacity: 0.6 } });
	});

	$( document.body ).trigger( 'init_add_payment_method' );

	// Prevent firing multiple requests upon double clicking the buttons in payment methods table
	$(' .woocommerce .payment-method-actions .button.delete' ).on( 'click' , function( event ) {
		if ( $( this ).hasClass( 'disabled' ) ) {
			event.preventDefault();
		}

		$( this ).addClass( 'disabled' );
	});

});
</textarea><br>
    <input type="submit" value="Save">
</form>