addyosmani/backbone-fundamentals — pull request #294 by greywolve (2013-01-24 20:54:19+00:00)
Title: Update chapters/03-internals.md

For validations:

```
.on("error", function() { ... })
```
Is now:

```
.on("invalid", function() { ... })
```

Updated the example so it now works correctly.