我有一个带有动画的页面，并将其发布到放置在 iframe 中的第三方网站上。
有时 iframe 的 wrapper div 将 CSS visibility 属性更改为 hidden，当它返回可见时，iframe 内的动画变为冷冻。
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Testing iFrame CSS Animation when visibility is toggled</title>
<style>.invisible { visibility: hidden; }</style>
</head>
<body>
<h2>iFrame:</h2>
<div id="thirdPartyWrapper">
<iframe id="myiframe" style="border:2px solid red;" width="500" height="500" src="http://www.aziznatour.com/temp/iframe-animation/iframe.php"></iframe>
</div>
<br>
<button>Toggle iFrame Visibility</button>
<script src="https://code.jquery.com/jquery-1.12.3.min.js"></script>
<script>
$('button').on("click", function(){
$("#thirdPartyWrapper").toggleClass('invisible');
});
</script>
</body>
</html> 
如果我在 Developer Tools 中悬停动画 div 它似乎仍然是动画，但视觉上动画已暂停。
我不能影响我的iframe 之外的HTML/CSS，如何修复动画？
最佳答案
如果您使用 opacity: 0 而不是 visibility: hidden 它将正常工作:
$('button').on("click", function() {
$("#myiframe").toggleClass('invisible');
});.invisible { opacity: 0; }<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<h2>iFrame:</h2>
<iframe id="myiframe" style="border:2px solid red;" width="250" height="250" src="http://www.aziznatour.com/temp/iframe-animation/iframe.php"></iframe>
<br>
<button>Toggle iFrame Visibility</button>由于您无法修改 HTML/CSS，我找到了另一种解决方案:使用 jQuery 来旋转 div 而不是 CSS animation 关键帧。
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Testing iFrame CSS Animation when visibility is toggled</title>
<style>.invisible { visibility: hidden; }</style>
</head>
<body>
<h2>iFrame:</h2>
<iframe id="myiframe" style="border:2px solid red;" width="250" height="250" src="http://www.aziznatour.com/temp/iframe-animation/iframe-jq-ani.php"></iframe>
<br>
<button>Toggle iFrame Visibility</button>
<script src="https://code.jquery.com/jquery-1.12.3.min.js"></script>
<script>
$('button').on("click", function(){
$("#myiframe").toggleClass('invisible');
});
</script>
</body>
</html>我使用了 jQuery Rotate 插件 - 这是您的 iframe 源代码的样子:
// VERSION: 2.3 LAST UPDATE: 11.07.2013
/*
* Licensed under the MIT license: http://www.opensource.org/licenses/mit-license.php
*
* Made by Wilq32, wilq32@gmail.com, Wroclaw, Poland, 01.2009
* Website: http://jqueryrotate.com
*/
(function($) {
var supportedCSS,supportedCSSOrigin, styles=document.getElementsByTagName("head")[0].style,toCheck="transformProperty WebkitTransform OTransform msTransform MozTransform".split(" ");
for (var a = 0; a < toCheck.length; a++) if (styles[toCheck[a]] !== undefined) { supportedCSS = toCheck[a]; }
if (supportedCSS) {
supportedCSSOrigin = supportedCSS.replace(/[tT]ransform/,"TransformOrigin");
if (supportedCSSOrigin[0] == "T") supportedCSSOrigin[0] = "t";
}
// Bad eval to preven google closure to remove it from code o_O
eval('IE = "v"=="\v"');
jQuery.fn.extend({
rotate:function(parameters)
{
if (this.length===0||typeof parameters=="undefined") return;
if (typeof parameters=="number") parameters={angle:parameters};
var returned=[];
for (var i=0,i0=this.length;i<i0;i++)
{
var element=this.get(i);
if (!element.Wilq32 || !element.Wilq32.PhotoEffect) {
var paramClone = $.extend(true, {}, parameters);
var newRotObject = new Wilq32.PhotoEffect(element,paramClone)._rootObj;
returned.push($(newRotObject));
}
else {
element.Wilq32.PhotoEffect._handleRotation(parameters);
}
}
return returned;
},
getRotateAngle: function(){
var ret = [];
for (var i=0,i0=this.length;i<i0;i++)
{
var element=this.get(i);
if (element.Wilq32 && element.Wilq32.PhotoEffect) {
ret[i] = element.Wilq32.PhotoEffect._angle;
}
}
return ret;
},
stopRotate: function(){
for (var i=0,i0=this.length;i<i0;i++)
{
var element=this.get(i);
if (element.Wilq32 && element.Wilq32.PhotoEffect) {
clearTimeout(element.Wilq32.PhotoEffect._timer);
}
}
}
});
// Library agnostic interface
Wilq32=window.Wilq32||{};
Wilq32.PhotoEffect=(function(){
if (supportedCSS) {
return function(img,parameters){
img.Wilq32 = {
PhotoEffect: this
};
this._img = this._rootObj = this._eventObj = img;
this._handleRotation(parameters);
}
} else {
return function(img,parameters) {
this._img = img;
this._onLoadDelegate = [parameters];
this._rootObj=document.createElement('span');
this._rootObj.style.display="inline-block";
this._rootObj.Wilq32 =
{
PhotoEffect: this
};
img.parentNode.insertBefore(this._rootObj,img);
if (img.complete) {
this._Loader();
} else {
var self=this;
// TODO: Remove jQuery dependency
jQuery(this._img).bind("load", function(){ self._Loader(); });
}
}
}
})();
Wilq32.PhotoEffect.prototype = {
_setupParameters : function (parameters){
this._parameters = this._parameters || {};
if (typeof this._angle !== "number") { this._angle = 0 ; }
if (typeof parameters.angle==="number") { this._angle = parameters.angle; }
this._parameters.animateTo = (typeof parameters.animateTo === "number") ? (parameters.animateTo) : (this._angle);
this._parameters.step = parameters.step || this._parameters.step || null;
this._parameters.easing = parameters.easing || this._parameters.easing || this._defaultEasing;
this._parameters.duration = 'duration' in parameters ? parameters.duration : parameters.duration || this._parameters.duration || 1000;
this._parameters.callback = parameters.callback || this._parameters.callback || this._emptyFunction;
this._parameters.center = parameters.center || this._parameters.center || ["50%","50%"];
if (typeof this._parameters.center[0] == "string") {
this._rotationCenterX = (parseInt(this._parameters.center[0],10) / 100) * this._imgWidth * this._aspectW;
} else {
this._rotationCenterX = this._parameters.center[0];
}
if (typeof this._parameters.center[1] == "string") {
this._rotationCenterY = (parseInt(this._parameters.center[1],10) / 100) * this._imgHeight * this._aspectH;
} else {
this._rotationCenterY = this._parameters.center[1];
}
if (parameters.bind && parameters.bind != this._parameters.bind) { this._BindEvents(parameters.bind); }
},
_emptyFunction: function(){},
_defaultEasing: function (x, t, b, c, d) { return -c * ((t=t/d-1)*t*t*t - 1) + b },
_handleRotation : function(parameters, dontcheck){
if (!supportedCSS && !this._img.complete && !dontcheck) {
this._onLoadDelegate.push(parameters);
return;
}
this._setupParameters(parameters);
if (this._angle==this._parameters.animateTo) {
this._rotate(this._angle);
}
else {
this._animateStart();
}
},
_BindEvents:function(events){
if (events && this._eventObj)
{
// Unbinding previous Events
if (this._parameters.bind){
var oldEvents = this._parameters.bind;
for (var a in oldEvents) if (oldEvents.hasOwnProperty(a))
// TODO: Remove jQuery dependency
jQuery(this._eventObj).unbind(a,oldEvents[a]);
}
this._parameters.bind = events;
for (var a in events) if (events.hasOwnProperty(a))
// TODO: Remove jQuery dependency
jQuery(this._eventObj).bind(a,events[a]);
}
},
_Loader:(function()
{
if (IE)
return function() {
var width=this._img.width;
var height=this._img.height;
this._imgWidth = width;
this._imgHeight = height;
this._img.parentNode.removeChild(this._img);
this._vimage = this.createVMLNode('image');
this._vimage.src=this._img.src;
this._vimage.style.height=height+"px";
this._vimage.style.width=width+"px";
this._vimage.style.position="absolute"; // FIXES IE PROBLEM - its only rendered if its on absolute position!
this._vimage.style.top = "0px";
this._vimage.style.left = "0px";
this._aspectW = this._aspectH = 1;
/* Group minifying a small 1px precision problem when rotating object */
this._container = this.createVMLNode('group');
this._container.style.width=width;
this._container.style.height=height;
this._container.style.position="absolute";
this._container.style.top="0px";
this._container.style.left="0px";
this._container.setAttribute('coordsize',width-1+','+(height-1)); // This -1, -1 trying to fix ugly problem with small displacement on IE
this._container.appendChild(this._vimage);
this._rootObj.appendChild(this._container);
this._rootObj.style.position="relative"; // FIXES IE PROBLEM
this._rootObj.style.width=width+"px";
this._rootObj.style.height=height+"px";
this._rootObj.setAttribute('id',this._img.getAttribute('id'));
this._rootObj.className=this._img.className;
this._eventObj = this._rootObj;
var parameters;
while (parameters = this._onLoadDelegate.shift()) {
this._handleRotation(parameters, true);
}
}
else return function () {
this._rootObj.setAttribute('id',this._img.getAttribute('id'));
this._rootObj.className=this._img.className;
this._imgWidth=this._img.naturalWidth;
this._imgHeight=this._img.naturalHeight;
var _widthMax=Math.sqrt((this._imgHeight)*(this._imgHeight) + (this._imgWidth) * (this._imgWidth));
this._width = _widthMax * 3;
this._height = _widthMax * 3;
this._aspectW = this._img.offsetWidth/this._img.naturalWidth;
this._aspectH = this._img.offsetHeight/this._img.naturalHeight;
this._img.parentNode.removeChild(this._img);
this._canvas=document.createElement('canvas');
this._canvas.setAttribute('width',this._width);
this._canvas.style.position="relative";
this._canvas.style.left = -this._img.height * this._aspectW + "px";
this._canvas.style.top = -this._img.width * this._aspectH + "px";
this._canvas.Wilq32 = this._rootObj.Wilq32;
this._rootObj.appendChild(this._canvas);
this._rootObj.style.width=this._img.width*this._aspectW+"px";
this._rootObj.style.height=this._img.height*this._aspectH+"px";
this._eventObj = this._canvas;
this._cnv=this._canvas.getContext('2d');
var parameters;
while (parameters = this._onLoadDelegate.shift()) {
this._handleRotation(parameters, true);
}
}
})(),
_animateStart:function()
{
if (this._timer) {
clearTimeout(this._timer);
}
this._animateStartTime = +new Date;
this._animateStartAngle = this._angle;
this._animate();
},
_animate:function()
{
var actualTime = +new Date;
var checkEnd = actualTime - this._animateStartTime > this._parameters.duration;
// TODO: Bug for animatedGif for static rotation ? (to test)
if (checkEnd && !this._parameters.animatedGif)
{
clearTimeout(this._timer);
}
else
{
if (this._canvas||this._vimage||this._img) {
var angle = this._parameters.easing(0, actualTime - this._animateStartTime, this._animateStartAngle, this._parameters.animateTo - this._animateStartAngle, this._parameters.duration);
this._rotate((~~(angle*10))/10);
}
if (this._parameters.step) {
this._parameters.step(this._angle);
}
var self = this;
this._timer = setTimeout(function()
{
self._animate.call(self);
}, 10);
}
// To fix Bug that prevents using recursive function in callback I moved this function to back
if (this._parameters.callback && checkEnd){
this._angle = this._parameters.animateTo;
this._rotate(this._angle);
this._parameters.callback.call(this._rootObj);
}
},
_rotate : (function()
{
var rad = Math.PI/180;
if (IE)
return function(angle)
{
this._angle = angle;
this._container.style.rotation=(angle%360)+"deg";
this._vimage.style.top = -(this._rotationCenterY - this._imgHeight/2) + "px";
this._vimage.style.left = -(this._rotationCenterX - this._imgWidth/2) + "px";
this._container.style.top = this._rotationCenterY - this._imgHeight/2 + "px";
this._container.style.left = this._rotationCenterX - this._imgWidth/2 + "px";
}
else if (supportedCSS)
return function(angle){
this._angle = angle;
this._img.style[supportedCSS]="rotate("+(angle%360)+"deg)";
this._img.style[supportedCSSOrigin]=this._parameters.center.join(" ");
}
else
return function(angle)
{
this._angle = angle;
angle=(angle%360)* rad;
// clear canvas
this._canvas.width = this._width;//+this._widthAdd;
this._canvas.height = this._height;//+this._heightAdd;
// REMEMBER: all drawings are read from backwards.. so first function is translate, then rotate, then translate, translate..
this._cnv.translate(this._imgWidth*this._aspectW,this._imgHeight*this._aspectH); // at least center image on screen
this._cnv.translate(this._rotationCenterX,this._rotationCenterY); // we move image back to its orginal
this._cnv.rotate(angle); // rotate image
this._cnv.translate(-this._rotationCenterX,-this._rotationCenterY); // move image to its center, so we can rotate around its center
this._cnv.scale(this._aspectW,this._aspectH); // SCALE - if needed ;)
this._cnv.drawImage(this._img, 0, 0); // First - we draw image
}
})()
}
if (IE)
{
Wilq32.PhotoEffect.prototype.createVMLNode=(function(){
document.createStyleSheet().addRule(".rvml", "behavior:url(#default#VML)");
try {
!document.namespaces.rvml && document.namespaces.add("rvml", "urn:schemas-microsoft-com:vml");
return function (tagName) {
return document.createElement('<rvml:' + tagName + ' class="rvml">');
};
} catch (e) {
return function (tagName) {
return document.createElement('<' + tagName + ' xmlns="urn:schemas-microsoft.com:vml" class="rvml">');
};
}
})();
}
})(jQuery);
var rotation = function (){
$("#rotate").rotate({
angle:0,
animateTo:360,
callback: rotation,
easing: function (x,t,b,c,d){ // t: current time, b: begInnIng value, c: change In value, d: duration
return c*(t/d)+b;
}
});
}
rotation(); #rotate {
width: 100px;
height: 100px;
background: limegreen;
margin: 3em;
}<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<div id="rotate"></div>jsFiddle:https://jsfiddle.net/azizn/8qbq53fd/
关于html - visibility :hidden freezes animation inside iframe in Chrome and Opera (WebKit likely)，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/37271896/