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Variables

JavaScript programs consist of a series of statements. Each statement performs an elementary operation. By executing many instructions you can finally solve complex tasks. Each statement is written in a line and closed with a semicolon.

An elementary statement is the declaration and initialization of a variable. A variable is a container for a value. The statement
var city = 'Porbandar';
declares a variable with the name city and initializes it with the value 'Porbandar'. The variable is declared with the keyword var. Use the equals sign, the assignment operator, to assign a value to the variable. Note: JavaScript is case-sensitive. city and City are two different variables.

Exercise

Declare a variable firstname and initialize it with the value 'Lata'.
var firstname = ...
var firstname = 'Lata';