JS-Variable

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1/ Variable

<script>

var FName=FirstName

</script>

Declaring a variable

var FirstName

var Adress,Phone,Email;

You can declare:

Natural numbers: Integer

Decimal numbers: Double

String: Text

Assigning a value to a variable

Salary=12

or var Salary=12

Display the value

Document.write(Salary)

Addition/Substraction/Multiplication/Division

Document.write(125+40)

Document.write(Salary+50)

Negative

Temp=-31

Function and local variables

Variable declared in a body of a function

....{var custAdress}...

Use Declared variable

function showAdress(){

var custAdress

custAdress="12 Hello"

document.write(custAdress);

}

showAdress();