Question from the Javascript test

It prohibits accents and other special characters in the name of a variable.

It throws an error when trying to display a read-only property on an object.

It prohibits the use of octal notation on numbers(eg: var a = 015;).

It improves the security of theeval() function by allocating a dedicated scope to it.

It forbids to explicitly write a variable inwindow like this : window.foo='bar'

It throws an error if we forget semicolons.