JavaScript variables are containers for storing data values.

In this example, x, y, and z, are variables:

Example

var x = 5;

var y = 6;

var z = x + y;

From the example above, you can expect:

• x stores the value 5
• y stores the value 6
• z stores the value 11

Much Like Algebra

In this example, price1, price2, and total, are variables:

Example

var price1 = 5;

var price2 = 6;

var total = price1 + price2;

In programming, just like in algebra, we use variables (like price1) to hold values.

In programming, just like in algebra, we use variables in expressions (total = price1 + price2).

From the example above, you can calculate the total to be 11.