and other means of getting the focus.… Events focus/blur.The focus event is called on focusing, and blur – when the element loses the focus.… Methods focus/blur.Methods elem.focus() and elem.blur() set/unset the focus on the element.… JavaScript-initiated focus loss
A focus loss can occur for many reasons.… the focus loss at the element (blur event), and when the alert is dismissed, the focus comes back (focus
Focus/blur on a window.Theoretically, there are window.focus() and window.blur() methods to focus/unfocus… And there are also focus/blur events that allow to catch the moment when the visitor focuses on a window… An “opening window” icon near a link or button would allow the visitor to survive the focus shift and… Methods focus() and blur() allow to focus/unfocus a window. But they don’t work all the time.… Events focus and blur allow to track switching in and out of the window.
For text inputs that means that the event occurs when it loses focus.… But when we move the focus somewhere else, for instance, click on a button – there will be a change event… For text inputs triggers on focus loss.
input
For text inputs on every change.
For instance, mousedown on an <input> field leads to focusing in it, and the focus event.… If we prevent the mousedown event, there’s no focus.… Try to click on the first <input> below – the focus event happens.… But if you click the second one, there’s no focus.
Similar to a range, a selection object has a start, called “anchor”, and the end, called “focus”.… Selection end/start vs Range
There’s an important difference between a selection anchor/focus… words, when the mouse button is pressed, and then it moves forward in the document, then its end (focus… could be done backwards: starting from “italic” to “Example” (backward direction), then its end (focus… range) to selection start,
collapseToEnd() – collapse to selection end,
extend(node, offset) – move focus
That attribute allows us to focus on it and edit.… If we run this code in the browser, then focus on the given <div> and change the text inside <
So when a visitor tries to focus on the input they see on the page, they actually focus on the input
We’ll focus on JavaScript in the browser in the next part of the tutorial.
In the next chapter we’ll cover focus and blur events that may occur on any element, but are mostly handled
If you take a look at UI Events specification, most events have composed: true:
blur, focus, focusin
Form element events:
submit – when the visitor submits a <form>.
focus – when the visitor focuses
For instance, a focus event does not bubble. There are other examples too, we’ll meet them.