How to create a Simple calculator Using HTML and JavaScript
Here are the steps to create a simple calculator using HTML and JavaScript which can evaluate simple arithmetic on integer numbers. Two types of inputs text and button are used here on a table within a form element and OnClick event was used to insert button values on the screen or to evaluate the numbers.
1. At first Insert a <form> element within <body> tag.
2. Create a table using <table> .....</table> tag.
3. Insert two types of Input text and button within table data of table row using <tr><td>....</td></tr> tag.
4. Assign OnClick event for all the buttons having numbers and arithmetic operators.
5. Give blank value for Clear(C) button.
6. Use eval() function to evaluate the numbers on OnClick event of equal to sign button.
Steps to create a Simple calculator Using HTML and JavaScript
1. At first Insert a <form> element within <body> tag.
2. Create a table using <table> .....</table> tag.
3. Insert two types of Input text and button within table data of table row using <tr><td>....</td></tr> tag.
4. Assign OnClick event for all the buttons having numbers and arithmetic operators.
5. Give blank value for Clear(C) button.
6. Use eval() function to evaluate the numbers on OnClick event of equal to sign button.
Full HTML code for a Simple HTML calculator
<html>
<head></head>
<body>
<h3>Simple Calculator</h3>
<br/>
<form Name="calc">
<table border=2>
<tr>
<td colspan=4><input type=text Name="display"></td>
</tr>
<tr>
<td><input type=button value="0" OnClick="calc.display.value+='0'"></td>
<td><input type=button value="1" OnClick="calc.display.value+='1'"></td>
<td><input type=button value="2" OnClick="calc.display.value+='2'"></td>
<td><input type=button value="+" OnClick="calc.display.value+='+'"></td>
</tr>
<tr>
<td><input type=button value="3" OnClick="calc.display.value+='3'"></td>
<td><input type=button value="4" OnClick="calc.display.value+='4'"></td>
<td><input type=button value="5" OnClick="calc.display.value+='5'"></td>
<td><input type=button value="-" OnClick="calc.display.value+='-'"></td>
</tr>
<tr>
<td><input type=button value="6" OnClick="calc.display.value+='6'"></td>
<td><input type=button value="7" OnClick="calc.display.value+='7'"></td>
<td><input type=button value="8" OnClick="calc.display.value+='8'"></td>
<td><input type=button value="x" OnClick="calc.display.value+='*'"></td>
</tr>
<tr>
<td><input type=button value="9" OnClick="calc.display.value+='9'"></td>
<td><input type=button value="C" OnClick="calc.display.value=''"></td>
<td><input type=button value="=" OnClick="calc.display.value=eval(calc.display.value)"></td>
<td><input type=button value="/" OnClick="calc.display.value+='/'"></td>
</tr>
</table>
</form>
</body>
</html>
Related Search Terms
Related Posts:
How to use Round, Random, Min and Max in JavaSript
How to Concatenate, Join and Sort Array in JavaScript?
How to Loop Through JavaScript Array?
How to Loop using JavaScript?
How to Show Pop Up Boxes Using JavaScript?
How to Write Conditional Statements in JavaScript?
How to Write JavaScript With HTML?
How to create Changeable Date and Time Using JavaScript?
How to Validate a HTML Form Using JavaScript?
How to create a simple form using HTML?
How to Create JavaScript Image Slideshow with LInks
How to Display Date Format in JavaScript?
How to Validate a HTML Form Using JavaScript?
What are the Different Ways to Redirect Page in JavaScript?
How to Detect Visitor's Browser Using JavaScript?
How to make rounded corners border using CSS
How to Create Custom CSS Template for Printing
How to create a simple form using HTML?
How to create a Simple calculator Using HTML and JavaScript
![]()
Reviewed by Unknown
on
12:00 ص
Rating:
ليست هناك تعليقات: