danielck

/*
Include this file in your theme and enqueue it like this in PHP:

	function my_customize_preview_js() {
		wp_enqueue_script( 'customizer-preview', get_template_directory_uri() . '/path/to/customizer.js', array( 'customize-preview' ), '20170422', true );
	}
	add_action( 'customize_preview_init', 'my_customize_preview_js' );

*/

mjangda

jQuery(document).ajaxSuccess(function(e, xhr, settings) {
	var widget_id_base = 'mywidget';
	
	if(settings.data.search('action=save-widget') != -1 && settings.data.search('id_base=' + widget_id_base) != -1) {
		alert('yay!');
		// do other stuff
	}
});