Transitionend事件触发两次

我有以下代码,但我的问题是该transitionend事件被触发了两次。我不知道是什么原因造成的。我怀疑是由供应商前缀引起的,但并非如此。即使我只离开transitionendtransition它仍然会开火两次。

transition: 1s ease-out;

document.addEventListener('click', function (e) {

var submarine = document.querySelector('.submarine');

var submarineX = e.clientX - submarine.offsetWidth / 2;

var submarineY = e.clientY - submarine.offsetHeight / 2;

submarine.style.left = submarineX + "px";

submarine.style.top = submarineY + "px";

});

document.addEventListener('transitionend', function (event) {

console.log(event.type + " " + new Date().getTime());

});

document.addEventListener('transitionend', function (event) {

console.log(event.type + " " + new Date().getTime());

});

document.addEventListener('click', function (e) {

var submarine = document.querySelector('.submarine');

var submarineX = e.clientX - submarine.offsetWidth / 2;

var submarineY = e.clientY - submarine.offsetHeight / 2;

submarine.style.left = submarineX + "px";

submarine.style.top = submarineY + "px";

});

.submarine {

position: absolute;

top: 0;

left: 0;

width: 20px;

height: 20px;

background-color: red;

border-radius: 50%;

transition: 1s ease-out;

}

<div class="submarine"></div>

回答:

transitionend对于您top和,每个已转换的属性都会触发left

您可以在访问与事件关联的属性event.propertyName

没有“ transition end”事件,因此您可能需要一些技巧,例如transitionend仅过滤其中一个过渡属性的回调处理。例如:

function (event) {

if (event.propertyName == 'top') {

//put your code here

}

});


ps。没有浏览器会触发该MSTransitionEnd事件。它是在MS文档中的某个时刻,但是在IE10beta版本发布之前的某个时间,它被标准transitionend事件所取代。

以上是 Transitionend事件触发两次 的全部内容, 来源链接: utcz.com/qa/431784.html

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