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$ curl repovive.com/roadmaps/javascript/events/focus-and-blur

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$ curl repovive.com/roadmaps/javascript/events/focus-and-blur

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Focus and Blur - Events | JavaScript | Repovive

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JavaScript22 sections · 783 units18h total

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Focus and Blur

Track element focus

focus fires when an element gains focus. blur fires when it loses focus.

input.addEventListener("focus", () => {
  input.classList.add("active");
});

input.addEventListener("blur", () => {
  input.classList.remove("active");
  validateField(input);
});

Use these for form validation and visual feedback.