Event.currentTarget

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currentTarget 只读特性在 事件 interface identifies the current target for the event, as the event traverses the DOM. It always refers to the element to which the event handler has been attached, as opposed to Event.target , which identifies the element on which the event occurred and which may be its descendant.

句法

var currentEventTarget = event.currentTarget;

值

EventTarget

范例

Event.currentTarget is interesting to use when attaching the same event handler to several elements.

function hide(e){
  e.currentTarget.style.visibility = 'hidden';
  console.log(e.currentTarget);
  // When this function is used as an event handler: this === e.currentTarget
}
var ps = document.getElementsByTagName('p');
for(var i = 0; i < ps.length; i++){
  // Console: print the clicked <p> element
  ps[i].addEventListener('click', hide, false);
}
// Console: print <body>
document.body.addEventListener('click', hide, false);
// Click around and make paragraphs disappear

注意： 值 event.currentTarget is only available while the event is being handled. If you console.log() the event object, storing it in a variable, and then look for the currentTarget key in the console, its value will be null . Instead, you can either directly console.log(event.currentTarget) to be able to view it in the console or use the debugger statement, which will pause the execution of your code thus showing you the value of event.currentTarget .

规范

规范	状态	注释
DOM The definition of 'Event.currentTarget' in that specification.	实时标准
DOM4 The definition of 'Event.currentTarget' in that specification.	过时
DOM (文档对象模型) 3 级事件规范 The definition of 'current event target' in that specification.	过时
DOM (文档对象模型) 2 级事件规范 The definition of 'Event.currentTarget' in that specification.	过时	初始定义

浏览器兼容性

The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. 更新 GitHub 上的兼容性数据

	桌面						移动
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
`currentTarget`	Chrome 1	Edge 12	Firefox 1	IE 9 9 不支持 6 — 9 On Internet Explorer 6 through 8, the event model is different. Event listeners are attached with the non-standard `EventTarget.attachEvent` method. In this model, there is no equivalent to `event.currentTarget` and `this` is the global object. One solution to emulate the `event.currentTarget` feature is to wrap your handler in a function calling the handler using `Function.prototype.call` with the element as a first argument. This way, `this` will be the expected value.	Opera 7	Safari 10	WebView Android 1	Chrome Android 18	Firefox Android 4	Opera Android 10.1	Safari iOS 10	Samsung Internet Android 1.0

图例

完整支持

另请参阅

事件目标的比较

元数据

最后修改： Apr 23, 2020

DOM (文档对象模型)
事件
构造函数
1. 事件
特性
1. bubbles
2. cancelable
3. cancelBubble
4. composed
5. currentTarget
6. defaultPrevented
7. eventPhase
8. explicitOriginalTarget
9. isTrusted
10. originalTarget
11. returnValue
12. srcElement
13. target
14. timeStamp
15. type
方法
事件
1. bubbles
2. cancelable
3. cancelBubble
4. composed
5. composedPath
6. currentTarget
7. defaultPrevented
8. 事件
9. eventPhase
10. initEvent
11. isTrusted
12. preventDefault
13. returnValue
14. stopImmediatePropagation
15. stopPropagation
16. target
17. timeStamp
18. type
DOM 相关页面

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