如何在jQuery中创建一个链式延迟动画序列？ [英] How create a chained delayed animation sequence in jQuery?

问题描述

考虑使用以下对象：

<div id="d1"><span>This is div1</span></div>
<div id="d2"><span>This is div2</span></div>
<div id="d3"><span>This is div3</span></div>
<div id="d4"><span>This is div4</span></div>
<div id="clickhere"><span>Start animation</span></div>

考虑到我想使用jQuery在列出的四个元素中的每个元素上应用动画之前。

And consider that I would like to apply, using jQuery, an animation on each of the four element listed before.

如果页面符合以下代码，请考虑以下代码：

Consider the following code applied in the head section if the page:

function start_anim() {
  $("#d1").animate({top:"-50px"},1000,function(){}); // Animating div1
  $("#d2").animate({top:"-50px"},1000,function(){}); // Animating div2
  $("#d3").animate({top:"-50px"},1000,function(){}); // Animating div3
  $("#d4").animate({top:"-50px"},1000,function(){}); // Animating div4
}
$(document).ready($('#clickhere').click(start_anim));

当事件点击被解雇。

然而我我希望第一个div先移动，然后我想在第一个div的动画达到50％时进行第二个div移动。第三个和最后一个div相同。

However I would like to have the first div move first, then I would like to have the second div move when the first div's animation has reached the 50%. The same for the third and the last div.

我怎样才能达到这个目的？谢谢你

How can I reach this? Thankyou

推荐答案

类似于：

$("#d1").animate({top:-50}, 1000);
$("#d2").delay(500).animate({top:-50}, 1000);
$("#d3").delay(1000).animate({top:-50}, 1000);
$("#d4").delay(1500).animate({top:-50}, 1000);

甚至更好：

var duration = 1000;

$('#d1,#d2,#d3,#d4').each(function(i) {
   $(this).delay( i*(duration/2) ).animate({top:-50}, duration);
});

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