Is JavaScript case sensitive

The JavaScript is case sensitive. This means that JavaScript distinguishes between uppercase and lowercase letters. Variables, functions, object properties, and other JavaScript identifiers must be referenced with the exact casing that was used when they were declared or defined.

For example, the following JavaScript code demonstrates case sensitivity:

var myVariable = "Hello";
var myvariable = "World";

console.log(myVariable);    // Output: "Hello"
console.log(myvariable);    // Output: "World"

In this example, myVariable and myvariable are treated as two separate variables because of the difference in casing. Accessing them with different casings will result in different values or potential errors.

It’s important to be consistent with the casing of your JavaScript identifiers to avoid confusion and unintended errors in your code.