问题描述
我开始通过添加一些有用的 prototypes 来扩展 EventTarget 接口，但后来我在 Safari 8 上对其进行了测试并得到:
I started to extend the EventTarget interface by adding some useful prototypes but then I tested it on Safari 8 and get :
[Error] ReferenceError: Can't find variable: EventTarget
我在 MDN 上发现 "window.EventTarget 不存在" for Safari.
I found on MDN that "window.EventTarget does not exist" for Safari.
这个问题看起来很有趣，但它是关于 IE8 的.
This question looks really interesting but it's about IE8.
所以，我想知道是否可以在 Safari 上访问对 EventTarget 接口的引用，或者是否有使用 EventTarget.prototype.hasEventListener 和 等代码的解决方法>EventTarget.prototype.hasEventListener 在 Safari 上没有任何错误?
So, I want to know if a reference to the EventTarget interface is accessible on Safari, or a workaround to use code like EventTarget.prototype.hasEventListener and EventTarget.prototype.hasEventListener without getting any errors on Safari ?
编辑我发现了一个有趣的 commit 说它是在 09/12/15 实现的(来自时间戳)，但它肯定在 Safari 9.1 中不起作用
EditI found an interesting commit which says that it was implemented the 09/12/15 (from timestamp), but it sure doesn't work in Safari 9.1
推荐答案
解决方法:
我只是使用了Element 接口 作为 Safari 的后备
Workaround :
I simply used the Element interface as a fallback for Safari
var EventTarget = EventTarget || Element;
EventTarget.prototype.addEventListener = function(){/*Some magic here*/};
我还检查了 Element 从 EventTarget 接口继承了 prototypes 并且确实如此！(document.body.addEventListener == EventTarget.prototype.addEventListener 返回 true)
I also checked that Element inherits prototypes from the EventTarget interface and it does ! (document.body.addEventListener == EventTarget.prototype.addEventListener returned true)
这篇关于Safari 中的 EventTarget 接口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！