使用 JQuery 一次淡出一个 div

Question

I have this function that fades out each div apart from the one that has been clicked on. At the moment they all fade out at the same time, but I would like them to fade out one at a time.

I would also like the divs to fade out in a random order so extra points to anyone who can tell me how!

$(".grid-item").click(function () {

  var selected = this;

  $('.grid > div').not(selected).each(function(i) {
    $(this).fadeTo(200, 0, function(){
      $(this).css("visibility", "hidden");
    });
  });

});

Answer 1

This is logic you can use: link

$(document).ready(function () {
    $(".grid-item").click(function () {
        var selected = this;
        var queue = $.Deferred().resolve(); // create an empty queue
        $('.grid > div').not(selected).get().forEach(function (div) {
            queue = queue.then(function () {
                return $(div).fadeTo(200, 0).promise();
            })
        });
    });
});

DEMO with bonus randomizing array : jsFiddle

Answer 2

var selected;

var fader = function() {
    $('.grid > div').not(selected).not(':hidden').first().fadeOut(200, fader);
};

$(".grid-item").click(function () {
    selected = this;
    fader();
});

For the randomness, have a look at:

http://blog.mastykarz.nl/jquery-random-filter/

Please give me the bonus points.

Answer 3

This is a bit lengthy, but I like it because it uses a recursive function to randomize the delay of the fades:

 var doms = []; var randos = []; var index = 0; $(".grid-item").click(function () { var selected = $(this); doms = $('.grid > div').not(selected); var num = Math.floor(Math.random() * doms.length); for (var i = 0; i < doms.length; i++) { while (randos.indexOf(num) > -1) { num = Math.floor(Math.random() * doms.length); } randos.push(num); } fadeout(); }) window.fadeout = function () { if (doms.length > 0) { var random = $(doms.get(randos[index])); $(random).delay(200 * index).fadeTo(200, 0, function () { $(random).css("visibility", "hidden"); }); doms = doms.not(random); index++; fadeout(); } }

 <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> <div class="grid"> <div class="grid-item">hello</div> <div class="grid-item">how</div> <div class="grid-item">are</div> <div class="grid-item">you</div> <div class="grid-item">today</div> </div>