Event.currentTarget

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.

Event 介面的唯讀屬性 currentTarget 會標明事件指向(current target)、還有該事件所遍歷的 DOM。屬性總會指向當時處理該事件的事件監聽器所註冊的 DOM 物件,而 event.target 屬性則是永遠指向觸發事件的 DOM 物件。

範例

event.currentTarget 在把相同的事件監聽器,附加到多個元素時,會出現很有趣的事情:

js
function hide(e) {
  e.currentTarget.style.visibility = "hidden";
  // 在這個函式用於事件監聽器時: this === e.currentTarget
}

var ps = document.getElementsByTagName("p");

for (var i = 0; i < ps.length; i++) {
  ps[i].addEventListener("click", hide, false);
}

// 單擊四周的話 p 元素就會消失

規範

Specification
DOM Standard
# ref-for-dom-event-currenttarget②

瀏覽器相容性

Report problems with this compatibility data on GitHub
desktopmobileserver
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
Deno
Node.js
currentTarget

Legend

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Full support
Full support

參見