Are you are prone to mistyping the as teh or function as funciton?
You can add one-line abbreviations to your .vimrc file to auto-correct
these mistakes for you.
abbr teh the
abbr funciton function
By adding these (or others) to your vim configuration, whenever you type the misspelled version, vim will know to instantly replace it with the correct version. This can be handy, but use it sparingly.