[英]How to activate a CSS3 (webkit) animation using javascript?
Im really stuck. 我真的卡住了。 I want a CSS animation I have created (below) to activate on clicking a div.
我想要一个我创建的CSS动画(下面)来点击一个div激活。 The only way I thought I could do that was using javascript to create an onClick event.
我认为我能做到的唯一方法是使用javascript创建onClick事件。 However I dont know how to run/refrence the animation that is in my css file.
但是我不知道如何运行/参考我的css文件中的动画。 Can anyone help me?
谁能帮我?
This is the animation in my css file that I want to run by clicking on a div. 这是我想通过单击div运行的css文件中的动画。
@-webkit-keyframes colorchange {
0% {
background-color: red;
opacity: 1.0;
-webkit-transform: scale(1.0) rotate(0deg);
}
33% {
background-color: blue;
opacity: 0.75;
-webkit-transform: scale(1.1) rotate(-5deg);
}
67% {
background-color: green;
opacity: 0.5;
-webkit-transform: scale(1.1) rotate(5deg);
}
100% {
background-color: red;
opacity: 1.0;
-webkit-transform: scale(1.0) rotate(0deg);
}
}
I even tried putting the css in the same file as the javascript (index.html) and used the following code to try and activate it on click, but no luck. 我甚至尝试将css放在与javascript(index.html)相同的文件中,并使用以下代码尝试在点击时激活它,但没有运气。
<script>
function colorchange( test )
{
test.style.webkitAnimationName = 'colorchange ';
}
</script>
Please help :) 请帮忙 :)
You're missing the duration and you have a trailing space in the name you assign: 您错过了持续时间,并且您指定的名称中有一个尾随空格:
function colorchange( test )
{
test.style.webkitAnimationName = 'colorchange'; // you had a trailing space here which does NOT get trimmed
test.style.webkitAnimationDuration = '4s';
}
Some more infos on @-webkit-keyframes
: @-webkit-keyframes
上的更多信息:
http://webkit.org/blog/324/css-animation-2/ http://webkit.org/blog/324/css-animation-2/
update 更新
Some working code. 一些工作代码。
<html>
<head>
<style>
@-webkit-keyframes colorchange {
0% {
background-color: red;
opacity: 1.0;
-webkit-transform: scale(1.0) rotate(0deg);
}
33% {
background-color: blue;
opacity: 0.75;
-webkit-transform: scale(1.1) rotate(-5deg);
}
67% {
background-color: green;
opacity: 0.5;
-webkit-transform: scale(1.1) rotate(5deg);
}
100% {
background-color: red;
opacity: 1.0;
-webkit-transform: scale(1.0) rotate(0deg);
}
}
</style>
<script>
function colorchange(e) {
if (e.style.webkitAnimationName !== 'colorchange') {
e.style.webkitAnimationName = 'colorchange';
e.style.webkitAnimationDuration = '4s';
// make sure to reset the name after 4 seconds, otherwise another call to colorchange wont have any effect
setTimeout(function() {
e.style.webkitAnimationName = '';
}, 4000);
}
}
</script>
</head>
<body>
<div onclick="colorchange(this)">Hello World!</div>
</body>
</html>
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