javascript - 如何规范跨浏览器的 CSS3 过渡结束事件？

Question

Webkit的transition结束事件叫做webkitTransitionEnd，Firefox是transitionEnd，opera是oTransitionEnd。在纯 JS 中解决所有这些问题的好方法是什么？我应该做浏览器嗅探吗？还是分别实施每一项？其他一些我没有想到的方式？

IE：

//doing browser sniffing
var transitionend = (isSafari) ? "webkitTransitionEnd" : (isFirefox) ? "transitionEnd" : (isOpera) ? "oTransitionEnd";

element.addEventListener(transitionend, function(){
  //do whatever
},false);

或者

// Assigning an event listener per browser
element.addEventListener("webkitTransitionEnd", fn);
element.addEventListener("oTransitionEnd", fn);
element.addEventListener("transitionEnd", fn);

function fn() {
   //do whatever
}

score 166 · Accepted Answer

Modernizr 中使用了一种改进的技术：

function transitionEndEventName () {
    var i,
        undefined,
        el = document.createElement('div'),
        transitions = {
            'transition':'transitionend',
            'OTransition':'otransitionend',  // oTransitionEnd in very old Opera
            'MozTransition':'transitionend',
            'WebkitTransition':'webkitTransitionEnd'
        };

    for (i in transitions) {
        if (transitions.hasOwnProperty(i) && el.style[i] !== undefined) {
            return transitions[i];
        }
    }

    //TODO: throw 'TransitionEnd event is not supported in this browser'; 
}

然后，您可以在需要转换结束事件时调用此函数：

var transitionEnd = transitionEndEventName();
element.addEventListener(transitionEnd, theFunctionToInvoke, false);

score 22 · Accepted Answer

根据 Matijs 的评论，检测转换事件的最简单方法是使用库，在这种情况下为 jquery：

$("div").bind("webkitTransitionEnd.done oTransitionEnd.done otransitionend.done transitionend.done msTransitionEnd.done", function(){
  // Unlisten called events by namespace,
  // to prevent multiple event calls. (See comment)
  // By the way, .done can be anything you like ;)
  $(this).off('.done')
});

在无库的 javascript 中，它变得有点冗长：

element.addEventListener('webkitTransitionEnd', callfunction, false);
element.addEventListener('oTransitionEnd', callfunction, false);
element.addEventListener('transitionend', callfunction, false);
element.addEventListener('msTransitionEnd', callfunction, false);

function callfunction() {
   //do whatever
}

score 8 · Accepted Answer

更新

以下是一种更清洁的方法，不需要modernizr

$(".myClass").one('transitionend webkitTransitionEnd oTransitionEnd otransitionend MSTransitionEnd', 
function() {
 //do something
});

或者

var transEndEventNames = {
        'WebkitTransition': 'webkitTransitionEnd',
        'MozTransition': 'transitionend',
        'OTransition': 'oTransitionEnd otransitionend',
        'msTransition': 'MSTransitionEnd',
        'transition': 'transitionend'
    }, transitionEnd = transEndEventNames[Modernizr.prefixed('transition')];

这是基于 Modernizr 建议的代码，但对于新版本的 Opera 有额外的事件。

http://modernizr.com/docs/#prefixed

score 8 · Accepted Answer

如果您使用 jQuery，Bootstrap$.support.transition.end将为当前浏览器返回正确的事件。

它在 Bootstrap 中定义并在其动画回调中使用，尽管 jQuery 文档说不要依赖这些属性：

尽管下面记录了其中一些属性，但它们不受长期弃用/删除周期的影响，并且一旦内部 jQuery 代码不再需要它们，它们可能会被删除。

http://api.jquery.com/jQuery.support/

score 6 · Accepted Answer

截至 2015 年，这个单线应该可以解决问题（IE 10+、Chrome 1+、Safari 3.2+、FF 4+ 和 Opera 12+）：-

var transEndEventName = ('WebkitTransition' in document.documentElement.style) ? 'webkitTransitionEnd' : 'transitionend'

附加事件侦听器很简单：-

element.addEventListener(transEndEventName , theFunctionToInvoke);

score 1 · Accepted Answer

第二个是要走的路。每个浏览器中只会触发其中一个事件，因此您可以设置所有这些事件并且它会起作用。

score 1 · Accepted Answer

这是一种更清洁的方法

 function transitionEvent() {
      // Create a fake element
      var el = document.createElement("div");

      if(el.style.OTransition) return "oTransitionEnd";
      if(el.style.WebkitTransition) return "webkitTransitionEnd";
      return "transitionend";
    }

score 0 · Accepted Answer

我使用这样的代码（使用 jQuery）

var vP = "";
var transitionEnd = "transitionend";
if ($.browser.webkit) {
    vP = "-webkit-";
    transitionEnd = "webkitTransitionEnd";
} else if ($.browser.msie) {
    vP = "-ms-";
} else if ($.browser.mozilla) {
    vP = "-moz-";
} else if ($.browser.opera) {
    vP = "-o-";
    transitionEnd = "otransitionend"; //oTransitionEnd for very old Opera
}

这让我可以使用 JS 通过指定与属性连接的 vP 来添加东西，如果它没有命中浏览器，它只会使用标准。这些事件让我可以像这样轻松地绑定：

object.bind(transitionEnd,function(){
    callback();
});

score 0 · Accepted Answer

谷歌关闭确保您不必这样做。如果你有一个元素：

goog.events.listen(element, goog.events.EventType.TRANSITIONEND, function(event) {
  // ... your code here
});

查看goog.events.eventtype.js的来源，TRANSITIONEND是通过查看useragent来计算的：

// CSS transition events. Based on the browser support described at:
  // https://developer.mozilla.org/en/css/css_transitions#Browser_compatibility
  TRANSITIONEND: goog.userAgent.WEBKIT ? 'webkitTransitionEnd' :
      (goog.userAgent.OPERA ? 'oTransitionEnd' : 'transitionend'),

score 0 · Accepted Answer

jQuery覆盖：

(function ($) {
  var oldOn = $.fn.on;

  $.fn.on = function (types, selector, data, fn, /*INTERNAL*/ one) {
    if (types === 'transitionend') {
      types = 'transitionend webkitTransitionEnd oTransitionEnd otransitionend MSTransitionEnd';
    }

    return oldOn.call(this, types, selector, data, fn, one);
  };
})(jQuery);

和用法如：

$('myDiv').on('transitionend', function() { ... });

score 0 · Accepted Answer

接受的答案是正确的，但您不必一次又一次地重新创建该元素......

构建一个全局变量并添加函数：

(function(myLib, $, window, document, undefined){

/**
 * @summary
 * Returns the browser's supported animation end event type.
 * @desc
 * @see {@link https://jonsuh.com/blog/detect-the-end-of-css-animations-and-transitions-with-javascript/}
 * @function myLib.getAnimationEndType
 * @return {string} The animation end event type
 */
(function(){
   var type;

   myLib.getAnimationEndType = function(){
      if(!type)
         type = callback();
      return type;

      function callback(){
         var t,
             el = document.createElement("fakeelement");

         var animations = {
            "animation"      : "animationend",
            "OAnimation"     : "oAnimationEnd",
            "MozAnimation"   : "animationend",
            "WebkitAnimation": "webkitAnimationEnd"
         }

         for (t in animations){
            if (el.style[t] !== undefined){
               return animations[t];
            }
         }
      }
   }
}());

/**
 * @summary
 * Returns the browser's supported transition end event type.
 * @desc
 * @see {@link https://jonsuh.com/blog/detect-the-end-of-css-animations-and-transitions-with-javascript/}
 * @function myLib.getTransitionEndType
 * @return {string} The transition end event type
 */
(function(){
   var type;

   myLib.getTransitionEndType = function(){
      if(!type)
         type = callback();
      return type;

      function callback(){
         var t,
             el = document.createElement("fakeelement");

         var transitions = {
            "transition"      : "transitionend",
            "OTransition"     : "oTransitionEnd",
            "MozTransition"   : "transitionend",
            "WebkitTransition": "webkitTransitionEnd"
         }

         for (t in transitions){
            if (el.style[t] !== undefined){
               return transitions[t];
            }
         }
      }
   }
}());

}(window.myLib = window.myLib || {}, jQuery, window, document));

javascript - 如何规范跨浏览器的 CSS3 过渡结束事件？

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