带有calc()的CSS过渡在IE10 +中不起作用 [英] CSS transitions with calc() do not work in IE10+

问题描述

我正在使用CSS过渡在鼠标悬停时从右到左设置一个容器动画.在Internet Explorer以外的所有浏览器中，此功能都可以正常工作.原因是我在CSS left属性中使用了(并且需要使用)calc().

我在此处创建了一个实时演示:实时演示

CSS看起来像这样:

div {
    background: red;
    width: 100px;
    height: 100px;
    position: absolute;
    top: 100px;
    left: 90%;
    -webkit-transition: left 0.7s cubic-bezier(0.77, 0, 0.175, 1);
    -moz-transition: left 0.7s cubic-bezier(0.77, 0, 0.175, 1);
    -o-transition: left 0.7s cubic-bezier(0.77, 0, 0.175, 1);
    transition: left 0.7s cubic-bezier(0.77, 0, 0.175, 1);
}
div.translate-less {
    left: calc(90% - 4rem)
}

我正在使用jQuery的鼠标悬停添加类.translate-less:

$(document)
.on( 'mouseenter', 'div', function(){
    $(this).addClass('translate-less')
})
.on( 'mouseleave', 'div', function(){
    $('div').removeClass('translate-less');
})

现在，我想在Internet Explorer中顺利过渡.为此，我什至放弃了这些特定浏览器的calc()并添加了left: 85%;之类的规则.但是IE 10和11已已删除支持条件注释，而且似乎没有办法专门针对这些浏览器.可以通过 -ms-high-contrast-hack ，但IE 11无法.我不想使用JavaScript 来检测浏览器，因为这似乎比使用CSS骇客还要骇人.

解决方案

也许transform: translateX()可以提供一种解决方法.根据情况，使用转换和正确的属性可能会更好:

right: 10%;
transform: translateX(-4rem); 

这是脚本的修改版本: http://jsfiddle.net/xV84Z/1/.

或者，虽然您不能在IE的translateX()中使用calc()(因为Live Demo

The CSS looks like this:

div {
    background: red;
    width: 100px;
    height: 100px;
    position: absolute;
    top: 100px;
    left: 90%;
    -webkit-transition: left 0.7s cubic-bezier(0.77, 0, 0.175, 1);
    -moz-transition: left 0.7s cubic-bezier(0.77, 0, 0.175, 1);
    -o-transition: left 0.7s cubic-bezier(0.77, 0, 0.175, 1);
    transition: left 0.7s cubic-bezier(0.77, 0, 0.175, 1);
}
div.translate-less {
    left: calc(90% - 4rem)
}

I am adding the class .translate-less on mouseover with jQuery:

$(document)
.on( 'mouseenter', 'div', function(){
    $(this).addClass('translate-less')
})
.on( 'mouseleave', 'div', function(){
    $('div').removeClass('translate-less');
})

Now I would like to have a smooth transition in Internet Explorer. For that, I would even ditch the calc() for these specific browsers and add a rule like left: 85%;. But IE 10 and 11 have dropped support for conditional comments and there seems to be no way to target these browsers specifically. IE 10 can be targeted with the -ms-high-contrast-hack, but IE 11 cannot. I do not want to use JavaScript to detect the browser because this seems even hackier than using CSS hacks.

解决方案

Maybe transform: translateX() can provide a work-around. Depending on the circumstances, using transforms and the right property might be better:

right: 10%;
transform: translateX(-4rem); 

Here is a modified version of your script: http://jsfiddle.net/xV84Z/1/.

Alternatively, while you can't use calc() within a translateX() in IE (because of a bug), you can apply multiple translateX()s in a transform:

/* This */
transform: translateX(90%) translateX(-4rem);
/* is equivalent to this */
transform: translateX(calc(90% - 4rem));

(However, 90% in this case means 90% of the target, not the parent.)

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