https://thecreativevan.com/wp/wp-includes/js/jquery/ui/effect-fade.js?ver=1.13.1

1/*!
2 * jQuery UI Effects Fade 1.13.1
3 * http://jqueryui.com
4 *
5 * Copyright jQuery Foundation and other contributors
6 * Released under the MIT license.
7 * http://jquery.org/license
8 */
9
10//>>label: Fade Effect
11//>>group: Effects
12//>>description: Fades the element.
13//>>docs: http://api.jqueryui.com/fade-effect/
14//>>demos: http://jqueryui.com/effect/
15
16( function( factory ) {
17	"use strict";
18
19	if ( typeof define === "function" && define.amd ) {
20
21		// AMD. Register as an anonymous module.
22		define( [
23			"jquery",
24			"./effect"
25		], factory );
26	} else {
27
28		// Browser globals
29		factory( jQuery );
30	}
31} )( function( $ ) {
32"use strict";
33
34return $.effects.define( "fade", "toggle", function( options, done ) {
35	var show = options.mode === "show";
36
37	$( this )
38		.css( "opacity", show ? 0 : 1 )
39		.animate( {
40			opacity: show ? 1 : 0
41		}, {
42			queue: false,
43			duration: options.duration,
44			easing: options.easing,
45			complete: done
46		} );
47} );
48
49} );