JavaScript · DOM and events

focus

Moves keyboard focus to an element. Use it deliberately, for example when opening a dialog.

javascriptRunnable example javascript course

Syntax

el.focus()

Example

Try it

const input = document.createElement("input");
document.body.append(input);
input.focus();
console.log(document.activeElement === input);

Reference pages are the quick answer. The course explains the why, shows the full example and ends with a challenge.