JavaScript applications consist of statements with an appropriate syntax. A single statement may span multiple lines. Multiple statements may occur on a single line if each statement is separated by a semicolon.

What is a declaration statement in JavaScript?

Declaring (Creating) JavaScript Variables

Creating a variable in JavaScript is called "declaring" a variable. You declare a JavaScript variable with the var keyword: var carName; After the declaration, the variable has no value (technically it has the value of undefined ).

Does JavaScript require variable declaration?

Loosely-typed Variables

It means a variable must be declared with the data type that specifies the type of data a variable will store. JavaScript is a loosely typed language. It means it does not require a data type to be declared.