Event.bubbles
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.
概述
表示事件是否會向上冒泡傳遞。
語法
var bool = event.bubbles;
回傳一個布林值,若事件會向上冒泡傳遞則回傳 true
。
備註
Only certain events can bubble. Events that do bubble have this property set to true
. You can use this property to check if an event is allowed to bubble or not.
範例
js
function goInput(e) {
// checks bubbles and
if (!e.bubbles) {
// passes event along if it's not
passItOn(e);
}
// already bubbling
doOutput(e);
}
規範
Specification |
---|
DOM Standard # ref-for-dom-event-bubbles③ |