Event.type
Baseline
Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since 2015年7月.
Event.type 唯讀屬性會回傳一個代表此事件物件類型的字串。Event.type 屬性是於事件物件建立時被設定，而其屬性值－事件類型名稱也常被當作是特定的事件。
傳至 EventTarget.addEventListener() 和 EventTarget.removeEventListener() 方法中，代表事件類型的參數 event 是不區分大小寫的。
可用的事件類型，可參考 event reference。
語法
event.type
範例
html
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8" />
<title>Event.type Example</title>
<script>
var currEvent = null;
function getEvtType(evt) {
console.log("//Start------------getEvtType(evt)------------ ");
currEvent = evt.type;
console.log(currEvent);
//document.getElementById("Etype").firstChild.nodeValue = currEvent;
document.getElementById("Etype").innerHTML = currEvent;
console.log("//End--------------getEvtType(evt)------------ ");
}
//Keyboard events
document.addEventListener("keypress", getEvtType, false); //[second]
document.addEventListener("keydown", getEvtType, false); //first
document.addEventListener("keyup", getEvtType, false); //third
//Mouse events
document.addEventListener("click", getEvtType, false); // third
document.addEventListener("mousedown", getEvtType, false); //first
document.addEventListener("mouseup", getEvtType, false); //second
</script>
</head>
<body>
<p>Press any key or click the mouse to get the event type.</p>
<p>Event type: <span id="Etype" style="color:red">-</span></p>
</body>
</html>
Result
規範
| Specification |
|---|
| DOM # ref-for-dom-event-type④ |