Is JavaScript case sensitive?

JavaScript is indeed case sensitive, which means that it treats identifiers with different cases as distinct. For example, the variables myVariable, MyVariable, and MYVARIABLE would be recognized as three separate variables within the same scope. This characteristic is fundamental in JavaScript and applies to all variable names, function names, and other identifiers in the language.

Understanding case sensitivity is crucial for preventing bugs and ensuring that code functions as intended, as failing to recognize the correct casing can lead to errors or unexpected behavior. This distinguishes JavaScript from some other programming languages that may be case insensitive, reinforcing the need for consistent naming conventions to maintain code clarity and functionality.