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Current behavior

Having a text input bound with ngModel and a pattern validation, if you hold a letter key while focusing the input to enter a long string such as "aaaaaaaaaaaaa", after ~30 characters the browser freezes and does not respond anymore.

Expected behavior

Angular should prevent browser to freeze when spamming input on a field with complex validation.

Minimal reproduction of the problem with instructions

Seehttp://plnkr.co/edit/ydMZGGQOh62fGwbLh0Yg?p=preview

What is the motivation / use case for changing the behavior?

You don't want browser to freeze or crash because of Angular

Please tell us about your environment:

Windows 7 64 bit

• Angular version: 2.1.2

• Browser: Chrome 54

• Language: all

• Node (for AoT issues):node --version =