Element: focusin event
Limited availability
This feature is not Baseline because it does not work in some of the most widely-used browsers.
Thuộc tính focusin fires when an element has received focus, after the focus event. The two events differ in that focusin bubbles, while focus does not.
The opposite of focusin is the focusout event, which fires when the element has lost focus.
The focusin event is not cancelable.
Cú pháp
Use the event name in methods like addEventListener(), or set an event handler property.
addEventListener("focusin", (event) => { })
onfocusin = (event) => { }
Event type
Một FocusEvent. Inherits from UIEvent and Event.
Event properties
This interface also inherits properties from its parent UIEvent, and indirectly from Event.
-
The element losing focus, if any.
Ví dụ
Live example
HTML
<form id="form">
<label>
Some text:
<input type="text" placeholder="text input" />
</label>
<label>
Password:
<input type="password" placeholder="password" />
</label>
</form>
JavaScript
const form = document.getElementById("form");
form.addEventListener("focusin", (event) => {
event.target.style.background = "pink";
});
form.addEventListener("focusout", (event) => {
event.target.style.background = "";
});
Result
Đặc tả kỹ thuật
| Specification |
|---|
| UI Events # event-type-focusin |
Note: The UI Events specification describes an order of focus events that's different from what current browsers implement.
Trình duyệt hỗ trợ
Xem thêm
- Related events:
blur,focus,focusout - Focusing: focus/blur