# preventDefault()

An Event method that cancels the browser's default action when the event is cancelable.

## What does **preventDefault()** do in JavaScript?

**preventDefault()** — An Event method that cancels the browser's default action when the event is cancelable.

```javascript
form.addEventListener("submit", event => {
    event.preventDefault();
});
```

Level: Freelancer · [More JavaScript terms at this level](https://www.ask-codey.com/glossary/subjects/javascript/freelancer)

Updated: September 27, 2026

Source: https://www.ask-codey.com/glossary/preventdefault