jquery fadeout to fadein

1$(".example").fadeIn(500);

1$(selector).fadeOut(duration)
2$(selector).fadeIn(duration)

1$('#ToHide').fadeOut(function () { $('#ToShow').fadeIn(); });

1if (!Element.prototype.fadeIn) {
2    Element.prototype.fadeIn = function(){
3        let ms = !isNaN(arguments[0]) ? arguments[0] : 400,
4            func = typeof arguments[0] === 'function' ? arguments[0] : (
5                typeof arguments[1] === 'function' ? arguments[1] : null
6            );
7
8        this.style.opacity = 0;
9        this.style.filter = "alpha(opacity=0)";
10        this.style.display = "inline-block";
11        this.style.visibility = "visible";
12
13        let $this = this,
14            opacity = 0,
15            timer = setInterval(function() {
16            opacity += 50 / ms;
17            if( opacity >= 1 ) {
18                clearInterval(timer);
19                opacity = 1;
20
21                if (func) func('done!');
22            }
23            $this.style.opacity = opacity;
24            $this.style.filter = "alpha(opacity=" + opacity * 100 + ")";
25        }, 50 );
26    }
27}
28
29if (!Element.prototype.fadeOut) {
30    Element.prototype.fadeOut = function(){
31        let ms = !isNaN(arguments[0]) ? arguments[0] : 400,
32            func = typeof arguments[0] === 'function' ? arguments[0] : (
33                typeof arguments[1] === 'function' ? arguments[1] : null
34            );
35
36        let $this = this,
37            opacity = 1,
38            timer = setInterval( function() {
39            opacity -= 50 / ms;
40            if( opacity <= 0 ) {
41                clearInterval(timer);
42                opacity = 0;
43                $this.style.display = "none";
44                $this.style.visibility = "hidden";
45
46                if (func) func('done!');
47            }
48            $this.style.opacity = opacity;
49            $this.style.filter = "alpha(opacity=" + opacity * 100 + ")";
50        }, 50 );
51    }
52}
53
54// fadeIn with default: 400ms
55document.getElementById(evt.target.id).fadeIn();
56
57// Calls the "alert" function with the message "done!" after 400ms - alert('done!');
58document.getElementById(evt.target.id).fadeIn(alert);
59
60// Calls the "alert" function with the message "done!" after 1500ms - alert('done!');
61document.getElementById(evt.target.id).fadeIn(1500, alert);
62