string.charAt(x) or string[x]?

Question

Is there any reason I should use string.charAt(x) instead of the bracket notation string[x]?

Answer 1

Bracket notation now works on all major browsers, except for IE7 and below.

// Bracket Notation
"Test String1"[6]

// charAt Implementation
"Test String1".charAt(6)

It used to be a bad idea to use brackets, for these reasons (Source):

This notation does not work in IE7. The first code snippet will return undefined in IE7. If you happen to use the bracket notation for strings all over your code and you want to migrate to .charAt(pos), this is a real pain: Brackets are used all over your code and there's no easy way to detect if that's for a string or an array/object.

You can't set the character using this notation. As there is no warning of any kind, this is really confusing and frustrating. If you were using the .charAt(pos) function, you would not have been tempted to do it.