golden hour

/var/www/html/wp-content/plugins/the-events-calendar/common/src/resources/js

File/Folder	Size	Actions
admin	-
admin-date-preview.js	1.13 KB
admin-date-preview.min.js	349 B
admin-log-controls.js	4.13 KB
admin-log-controls.min.js	1.3 KB
app	-
app-shop.js	268 B
app-shop.min.js	182 B
bumpdown.js	8.25 KB
bumpdown.min.js	4.15 KB
buttonset.js	2.4 KB
buttonset.min.js	1.29 KB
dependency.js	10.48 KB
dependency.min.js	4.55 KB
dialog.js	1.7 KB
dialog.min.js	939 B
dropdowns.js	14.99 KB
dropdowns.min.js	6.43 KB
notice-dismiss.js	1.04 KB
notice-dismiss.min.js	519 B
pue-notices.js	887 B
pue-notices.min.js	382 B
select2-after.js	1.46 KB
select2-after.min.js	816 B
timepicker.js	2.71 KB
timepicker.min.js	1.38 KB
tooltip.js	1.4 KB
tooltip.min.js	689 B
tribe-common.js	803 B
tribe-common.min.js	321 B
tribe-datatables.js	4.76 KB
tribe-datatables.min.js	2.82 KB
underscore-after.js	920 B
underscore-after.min.js	127 B
underscore-before.js	1.25 KB
underscore-before.min.js	265 B
utils	-
utils-camelcase.js	2.4 KB
utils-camelcase.min.js	778 B
validation.js	20.06 KB
validation.min.js	6.85 KB

Edit: admin-date-preview.js

/**
 * Provides live preview facilities for the event date format fields, akin
 * to (and using the same ajax mechanism as) the date format preview in WP's
 * general settings screen.
 */
jQuery( function( $ ) {
	// Whenever the input field for a date format changes, update the matching
	// live preview area
	$( ".live-date-preview" ).siblings( "input" ).on( 'change', function() {
		var $format_field  = $( this );
		var new_format     = $format_field.val();
		var $preview_field = $format_field.siblings( ".live-date-preview" );

/**
		 * Update the preview field when we get our response back from WP.
		 */
		var show_update = function( preview_text ) {
			preview_text = $( "<div/>" ).html( preview_text ).text(); // Escaping!
			$preview_field.html( preview_text );
		}

// Before making the request, show the spinner (this should naturally be "wiped"
		// when the response is rendered)
		$preview_field.append( "<span class='spinner'></span>" );
		$preview_field.find( ".spinner" ).css( "visibility", "visible" );

var request = {
			action: "date_format",
			date:   new_format
		}

$.post( ajaxurl, request, show_update, "text" );
	} );
} );