javascript - Jquery focus map fade in and fade out effect, please give me some advice

Question

The timer goes back every 3 seconds: {code...} But the effect produced like this will flash white, and the transition is not natural at all. I need that very natural transition effect. Example of such effect: http://www.5icool.org/demo/20... Did I use the wrong method?

我想大声告诉你 · Answer

The effect is described in the link below

.slide{
    position:relative;
}
li{
    position:absolute;
}

仅有的幸福 · Answer

Fade in and out is to change the transparency, you can try to use css3 transition
var i = 0,

t = setInterval(function () {
    i++;
    i===3 ? i=0 : false;
    $('.slide li').eq(i).addClass("opacity").siblings('li').removeClass("opacity");
}, 3000);