blur vs focusOut
Written byPhuoc Nguyen
Created
25 Aug, 2023
Category
DOM
In JavaScript DOM, when an element loses focus, two events are triggered:
`blur` and `focusOut`. While they may seem alike, there are significant differences between them that are worth noting.#The blur event
The
`blur` event happens when an element loses focus, like when the user clicks somewhere else or tabs away from it.js
input.addEventListener('blur', () => {
// Executed when element loses focus ...
});The
`blur` event is only triggered on the element that lost focus. It doesn't bubble up the DOM tree, so it won't be triggered on any parent elements.#The focusOut event
The
`focusOut` event is also triggered when an element loses focus. However, it behaves slightly differently than `blur`.js
element.addEventListener('focusout', () => {
// Executed when element loses focus ...
});When an
`focusOut` event occurs on an element, it bubbles up the DOM tree. This means that if the element has parent elements, those elements will also trigger the `focusOut` event.#The execution orders
It's important to note other difference between the
`focusOut` and `blur` events: the `focusOut` event is triggered before the focus shifts, while the `blur` event is dispatched after.The same goes for the
`focusIn` and `focus` events.
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Phước Nguyễn