What is meant by case-sensitive programming language?

JavaScript is a case-sensitive language. This means that language keywords, variables, function names, and any other identifiers must always be typed with a consistent capitalization of letters . The while keyword, for example, must be typed “while”, not “While” or “WHILE”.

case insensitive (not comparable) (computer science) Treating or interpreting upper- and lowercase letters as being the same .

Definition of case-sensitive : requiring correct input of uppercase and lowercase letters Having the Caps Lock key on accidentally can also lead to a frustrating series of “wrong password” alerts when trying to use a case-sensitive password for your office network or Internet provider.—