Pleaseform validation
Safe to use with polyfillhtmlHTML5 has baked in clientside form validation, and polyfills can enable this for legacy browsers as well.
- Verdict
- Safe to use
- Category
- HTML features
- Browser support
- Can I Use
- Works in
- IE10+
Should you use form validation in 2026?
Using the defined HTML5 API for constraint validation may be a more maintainable direction than using a jQuery Validation plugin, depending on your team. When detecting this feature, be aware of Safari's half baked support. It does support form validation, but won't highlight invalid fields or present error messages.