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What are Arithmetic Operators in JavaScript?

JavaScript supports the following arithmetic operators. Assume variable A holds 10 and variable B holds 20, then −

Sr.No
Operator and Description
1
+ (Addition)
Adds two operands
Ex: A + B will give 30
2
- (Subtraction)
Subtracts the second operand from the first
Ex: A - B will give -10
3
* (Multiplication)
Multiply both operands
Ex: A * B will give 200
4
/ (Division)
Divide the numerator by the denominator
Ex: B / A will give 2
5
% (Modulus)
Outputs the remainder of an integer division
Ex: B % A will give 0
6
++ (Increment)
Increases an integer value by one
Ex: A++ will give 11
7
-- (Decrement)
Decreases an integer value by one
Ex: A-- will give 9


The following code shows how to use arithmetic operators in JavaScript.

Example

Live Demo

<html>
   <body>
      <script>
         <!--
            var a = 33;
            var b = 10;
            var c = "Test";
            var linebreak = "<br />";
            document.write("a + b = ");
            result = a + b;
            document.write(result);
            document.write(linebreak);
            document.write("a - b = ");
            result = a - b;
            document.write(result);
            document.write(linebreak);
            document.write("a / b = ");
            result = a / b;
            document.write(result);
            document.write(linebreak);
            document.write("a % b = ");
            result = a % b;
            document.write(result);
            document.write(linebreak);
            document.write("a + b + c = ");
            result = a + b + c;
            document.write(result);
            document.write(linebreak);
            a = ++a;
            document.write("++a = ");
            result = ++a;
            document.write(result);
            document.write(linebreak);
            b = --b;
            document.write("--b = ");
            result = --b;
            document.write(result);
            document.write(linebreak);
         //-->
      </script>
      Set the variables to different values and then try...
   </body>
</html>
Updated on 13-Sep-2019 07:32:16

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