### Mathematical Operations

Appying a basic mathemeatical operation (+,-,*,/, and reminder after division %) in JavaScript is very strainforward.

A JavaScript program shown here illustrates how to multiply two numbers entered by the user:

<!DOCTTYPE html>

<!--Example 1: Promt2.html -->

<html>

<head>

<title> Prompt the user to enter two entries </title>

<script >

<!--

//read the first number as a string

firstentry = window.prompt('Enter the first number');

//read the second number as a string

secondentry = window.prompt('Enter the second number');

//convert strings to numbers

number1=parseInt(firstentry);

number2=parseInt(secondentry);

mult = number1* number2; //multiplying the two numbers

//show he result

document.writeln('<h2> The multiplication is ' + mult + '</h2>');

// -->

</script>

</head>

<body></body>

</html>

Note that any entry is first interpreted as a string, and if it's a number it needs to be converted into a number as shown in this program.

First, the user is prompted to enter two numbers:

Then multiplicatiopn is shown as under:

For more details, please contact me here.

Date of last modification: March 26, 2019.