通过JS访问@keyframes [英] Accessing @keyframes through JS

问题描述

我有一个在fadingIn和slideIn前提下工作的html / css / js模态，但我似乎无法使其在关闭时反过来工作……这简直是很难跳到不在那儿。

I have a html/css/js modal working on a fadeIn and slideIn premise but I can't seem to make it do the reverse on a close...it simply makes a hard jump to being "not there."

我在JS中的关闭函数只是采用modal.style.display = none，但是有一种方法可以访问我在CSS中添加的@keyframes

My close function in JS is simply taking the modal.style.display="none" but is there a way to access the @keyframes I've added in my css to make a smooth reverse?

HTML：

<h2>Bottom Modal</h2>

<button id="button">Click Me</button>

<div id="modal">

<div id="modal-content">
    <div id="modal-header">
        <span id="close">&times</span>
        <h2>modal header</h2>
    </div>

    <div id="modal-body">
        <p>Some text in the modal body</p>
        <p>Some other text in the modal body</p>
    </div>

    <div id="modal-footer">
        <h2>modal footer</h2>
    </div>

</div><!--modal-content-->
</div><!--modal div-->

CSS：

#modal
{
position: fixed;
z-index:1;
left:0;
top: 0;
width: 100%;
height: 100%;
overflow: auto;
background-color:rgba(0,0,0,0.4);
-webkit-animation-name: fadeIn;
-webkit-animation-duration: 0.4s;
animation-name: fadeIn;
animation-duration: 0.4s;
display: none;
}

#modal-content
{
position: fixed;
bottom: 0;
backgroun-color: #fefefe;
width: 100%;
-webkit-animation-name: slideIn;
-webkit-animation-duration: 0.4s;
animation-name: slideIn;
animation-duration: 0.4s;

}

#close
{
color: white;
float: right;
font-size: 28px;
font-weight: bold;
}

#close:hover, #close:focus
{
color: #000;
text-decoration: none;
cursor: pointer;
}

#modal-header
{
padding: 2px 16px;
background-color: #5cb85c;
color: white;
}

#modal-footer
{
padding: 2px 16px;
background-color: #5cb85c;
color: white;
}

#modal-body
{
padding: 2px 16px;
background-color: white;
}

 @-webkit-keyframes slideIn
 {
 from {bottom: -300px; opacity: 0}
 to {bottom: 0; opacity: 1}
 }

@keyframes slideIn
 {
 from {bottom: -300px; opacity: 0}
 to {bottom: 0; opacity: 1}
 }

@-webkit-keyframes fadeIn
{
from {opacity: 0}
to {opacity: 1}
}

@keyframes fadeIn
{
from {opacity: 0}
to {opacity: 1}
}

JS：

var modal = document.getElementById("modal");

var button = document.getElementById("button");

var close = document.getElementById("close");

button.onclick = function()
{
modal.style.display="block";
};

close.onclick = function()
{
modal.style.display="none";
};

window.onclick = function(event)
{
if(event.target == modal)
{
modal.style.display="none";
}
};

推荐答案

基于发布的问题：

• 一个人不能访问@keyframes规则-如果没有巨大的黑客攻击（将CSS作为文本并使用正则表达式解析规则，以及即使您在100％的情况下也无法做到）

• one cannot access @keyframes rules - without huge hacks (getting css as a text and parsing rules with regular expression, and even that you can't do in 100% cases)

访问关键帧规则对您的要求无济于事

accessing keyframe rules wouldn't help in what you are asking

设置 display：none

但是，您可以通过Javascript库（例如 jQuery.keyframes）动态生成，激活，停止和再次播放@keyframe动画。

however, you can dynamically generate, activate, stop and play-again @keyframe animations via Javascript library like jQuery.keyframes

这篇关于通过JS访问@keyframes的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！