Javascript calculator with basic arithmetic operations

This is a simple javascript that performs basic arithemetic operations like Addition, Subtraction, Division, Multipication and Modulus. Just copy paste the below script in to an html file and run on any browser to see the working.

Check out Advance Calculator With Memory Function Using Javascript.

<script language="javascript" type="text/javascript">
function multiply(){
a=Number(document.my_cal.first.value);
b=Number(document.my_cal.second.value);
c=a*b;
document.my_cal.total.value=c;
}
</script>

<script language="javascript" type="text/javascript">
function addition(){
a=Number(document.my_cal.first.value);
b=Number(document.my_cal.second.value);
c=a+b;
document.my_cal.total.value=c;
}
</script>

<script language="javascript" type="text/javascript">
function subtraction(){
a=Number(document.my_cal.first.value);
b=Number(document.my_cal.second.value);
c=a-b;
document.my_cal.total.value=c;
}
</script>

<script language="javascript" type="text/javascript">
function division(){
a=Number(document.my_cal.first.value);
b=Number(document.my_cal.second.value);
c=a/b;
document.my_cal.total.value=c;
}
</script>

<script language="javascript" type="text/javascript">
function modulus(){
a=Number(document.my_cal.first.value);
b=Number(document.my_cal.second.value);
c=a%b;
document.my_cal.total.value=c;
}
</script>

<!-- Opening a HTML Form. --> 
<form name="my_cal">

<!-- Here user will enter 1st number. --> 
Number 1: <input type="text" name="first"> 
 

<!-- Here user will enter 2nd number. --> 
Number 2: <input type="text" name="second"> 


<!-- Here result will be displayed. --> 
Get Result: <input type="text" name="total"> 

<input type="button" value="ADD" onclick="javascript:addition();">
<input type="button" value="SUB" onclick="javascript:subtraction();">
<input type="button" value="MUL" onclick="javascript:multiply();">
<input type="button" value="DIV" onclick="javascript:division();">
<input type="button" value="MOD" onclick="javascript:modulus();">
</form>

Incoming search terms:

• simple calculator program in javascript (11)
• simple calculator program in javascript using functions (10)
• arithmetic operation program in javascript (3)
• arithmetic operation using javascript (2)
• write a program in javascript to create a simple calculator (2)
• simple javascript program for calculator (2)
• calculator program using javascript (2)
• Design a simple Window based form application to perform basic arithmetic operations (2)
• java program to perform operations in a calculator (2)
• <script type=text/javascript> function calc() { (2)
• simple calculator program using javascript (2)
• calculator program in JavaScript (2)
• simple javascript calculator - basic arithmetic operations (2)
• calculator program in php using javascript (2)
• calculator program in javascript using functions (2)
• arithmetic operation using textbox and button (1)
• arithmetic operation program in javascript using select box (1)
• arithmetic operation program java script html (1)
• arithmetical operations using button types in javascript (1)
• arithmetic program in html (1)
• arithmetic operators using button click in javascript example (1)
• arithmetic operator programs for JavaScript (1)
• xml code using javascript functions to perform basic arithmetic operations (1)
• arithmetic operation in calculator using javascript (1)
• arithmetic calculator in javascript (1)
• Arithmetic calculation using switch in jsp (1)
• a program in javascript to make a calculator using functions (1)
• a simple program in javascript to make a calculator using functions (1)
• add mul div program in html (1)
• addition division using html and javascript (1)
• addition operation based on user input in php (1)
• addition operation in js program (1)
• addition program in php without button code (1)
• airthematic operation code in html js (1)
• ajax program for a simple arithmetic calculator (1)
• arithamatic operation program by using button nd text box n javascript (1)
• arithematic program using function javascript (1)
• arithmatic operation programs in html (1)
• arithmatic operations using JavaScript (1)
• arithmentic operation program in javascript (1)