Javascript Variable

JavaScript Variables

As with algebra, JavaScript variables are used to hold values or expressions.

A variable can have a short name, like x, or a more descriptive name, like carname.

Rules for JavaScript variable names:

• Variable names are case sensitive (y and Y are two different variables)
• Variable names must begin with a letter or the underscore character

The Main thing of javascript variable is u can store any kind of value in that variable even it is string or numeric value.

Note: Because JavaScript is case-sensitive, variable names are case-sensitive.

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Example

A variable's value can change during the execution of a script. You can refer to a variable by its name to display or change its value.

var m;

var p;

m = "testing for javascript" ;

p=15;