Below is a list of interfaces which are based on the main Event interface, with links to their respective documentation in the MDN API reference. Note that all event interfaces have names which end in "Event". AnimationEvent AudioProcessingEvent Deprecated BeforeUnloadEvent BlobEvent ClipboardEvent...
Below is a list of interfaces which are based on the main Event interface, with links to their respective documentation in the MDN API reference. Note that all event interfaces have names which end in "Event". AnimationEvent AudioProcessingEvent Deprecated BeforeUnloadEvent BlobEvent ClipboardEvent...
Below is a list of interfaces which are based on the main Event interface, with links to their respective documentation in the MDN API reference. Note that all event interfaces have names which end in "Event". AnimationEvent AudioProcessingEvent Deprecated BeforeUnloadEvent BlobEvent ClipboardEvent...
构造函数Event()用于创建一个新的事件对象。 语法 event= new Event(typeArg,eventInit); 参数 typeArg 是DOMString类型,表示所创建事件的名称。 eventInit可选 是EventInit类型的字典,接受以下字段: "bubbles",可选,Boolean类型,默认值为false,表示该事件是否冒泡。
The API is down for maintenance. You can continue to browse the MDN Web Docs, but MDN Plus and Search might not be available. Thank you for your patience! References Web APIs Window online English (US) Window: online event Baseline Widely available This feature is well established and works...
创建一个新的事件(Event),随之必须调用自身的 init 方法进行初始化。 语法 document.createEvent(type) type 指明待创建事件对象的类型的字符串 This method returns a new DOMEventobject of the specified type, which must be initialized before use.
PointerEvent 接口代表了由 指针 引发的 DOM 事件的状态,包括接触点的位置,引发事件的设备类型,接触表面受到的压力等。
import'mdn-polyfills/POLYFILL_NAME';// For example:// (ES6 Modules)import'mdn-polyfills/Array.prototype.includes';import'mdn-polyfills/Object.create';// (CommonJS)require('mdn-polyfills/CustomEvent');require('mdn-polyfills/String.prototype.padStart');// and so on ... ...
2 MDN官方描述 EventSource接口是 web 内容与服务器发送事件 一个EventSource实例会对HTTP服务器开启一个持久化的连接,以text/event-stream格式发送事件,此连接会一直保持开启直到通过调用EventSource.close()关闭。 EventSource也称为 Server-Sent Events,SSE。
【内部实现】在MDN上有EventTarget的简单实现代码,可以学习下; document.addEventListener("click",()=>{console.log("document 被点击了");});constboxDiv=document.querySelector(".box");boxDiv.addEventListener("click",()=>{console.log("box 被点击");}); ...