What is JavaScript, the example?

A variable in JavaScript is a named storage location for data that may be accessed and changed during the course of a program. Variables can store several forms of data, including numbers, strings, and objects, and their values can be modified while a program is running. JavaScript include you can use the “var”, “let”, or “const” keyword followed by a variable name.

For example,

the “let” keyword creates a block-scoped variable that can be reassigned,

the “var” keyword creates a variable that has global or function scope.

A block-scoped variable that can’t be reassigned after initialization is made using the “const” keyword.