使用javascript在css3中获取@keyframe当前值 [英] get @keyframe current value in css3 with javascript

问题描述

请参阅此处的演示：
http://jsfiddle.net/hamidrezabstn/fgcPa/ 5 /

当我点击中间的雨滴时，我希望它旋转到旋转圆圈的当前位置！我尝试下面的JS代码，但它不起作用！我要做的下一件事是用旋转圆圈旋转雨滴！

When I click on the middle raindrop , I would like it to rotate to the current position of the spinning circle! I tried below the JS code but it doesn't work! The next thing I want to do is the raindrop rotate with spining circle!

 $(function() {
    $('#center').click(function() {
        var pos = $('#circle').css('transform')
        $(this).css('transform', 'pos')

        });
});

推荐答案

编辑：我说它不可能得到动画中变换的当前状态，但我错了。对此感到抱歉！

EDITED: I said that it is not posible to get the current status of the transform in an animation, but I was wrong. Sorry about that !

要做任何你想做的事，你不需要真正得到它;只需使用它。

To do what you want, any way, you don't need really to get it; just use it.

我稍微改变了你的HTML以将雨滴放在旋转的div中。

I have changed slightly your HTML to put the raindrop inside the rotating div.

然后，用这个CSS：

.raindrop {
    background:center blue;
    width:50px;
    height:50px;
    border-radius: 100%;
    border-top-left-radius: 0;
    position: absolute;
    margin: auto;    
    left: 75px;
    top: 75px;
    animation: ccircle 5s infinite linear;
    -webkit-animation: ccircle 5s infinite linear;
}

.raindrop:hover {
    animation: none;
    -webkit-animation: none;

}

.axis {
    width: 200px;
    height: 200px;
    transform: scaleX(2);
    background-color: none;
    border: 1px solid black;
    left: 50px;
    position: absolute;
    top: 50px;
    border-radius: 50%;
}
.rotate {
    width: 100%;
    height: 100%;
    top: 0px;
    animation: circle 5s infinite linear;
    -webkit-animation: circle 5s infinite linear;
    transform-origin: 50% 50%;
    -webkit-transform-origin: 50% 50%;
    position: absolute;
}
.counterrotate {
    width: 50px;
    height: 50px;
    animation: ccircle 5s infinite linear;
    -webkit-animation: ccircle 5s infinite linear;
}
.planet {
    width: 50px;
    height: 50px;
    position: absolute;
    border-radius : 50px;
    left: 0px;
    top: 0px;
    background-color: red;
    display: block;
}
@keyframes circle {
    from {   transform: rotateZ(0deg)    }
    to {        transform: rotateZ(360deg)    }
}
@-webkit-keyframes circle {
    0% {   -webkit-transform: rotateZ(0deg)    }
    100% {        -webkit-transform: rotateZ(360deg)    }
}
@keyframes ccircle {
    from {        transform: rotateZ(360deg)    }
    to {        transform: rotateZ(0deg)    }
}
@-webkit-keyframes ccircle {
    from { -webkit-transform: rotateZ(360deg) }
    to   { -webkit-transform: rotateZ(0deg)   }
}

你有这个小提琴

在其中，雨滴始终与轴div一起旋转。但它也是反转的，所以看起来是静态的。

In it, the raindrop is always rotating with the axis div. But it is also counter-rotating, so it appears to be static.

当您将鼠标悬停时，计数旋转将被禁用，并指向红色圆圈。只要你将它悬停在它上面就会继续这样做。

When you hover it, the count-rotation is disabled, and it points to red circle. And will continue to do so as long as you hover it.

要通过点击进行操作，只需将：hover属性定位到一个类，然后将此类设置为点击。

To do that thru a click, just asociate the :hover properties to a class, and set this class in the click.

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