Calculator program in JavaScript

Here you will learn to create a calculator program in javascript using HTML language.

A calculator is a program, which is used to perform the mathematical long calculations in few nano seconds.

Program code of Calculator program in JavaScript

<html>

<body>

<h2>JavaScript Calculator</h2>

<form>

First Number:<br>

<br>

Second Number:<br>

<br>

Result: <br>

</form>

function sum() {

var num1 = new Number(document.forms[0].field1.value);

var num2 = new Number(document.forms[0].field2.value);

var result = num1 + num2;

document.forms[0].result.value = result;

}

function sub() {

var num1 = new Number(document.forms[0].field1.value);

var num2 = new Number(document.forms[0].field2.value);

var result = num1 - num2;

document.forms[0].result.value = result;

}

function mul() {

var num1 = new Number(document.forms[0].field1.value);

var num2 = new Number(document.forms[0].field2.value);

var result = num1 * num2;

document.forms[0].result.value = result;

}

function div() {

var num1 = new Number(document.forms[0].field1.value);

var num2 = new Number(document.forms[0].field2.value);

var result = num1 / num2;

document.forms[0].result.value = result;

}

</script>

</body>

</html>

Output

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