Make very simple calculator with Javascirpt

<!doctype html>
<html>
<head>
 
<title>Basic Calculator</title>
<style>
  input[type=button]{width:42px;box-sizing:border-box;margin-bottom:4px;}
</style>
</head>
 
<body>
<form name="Calc" style="width:190px; box-shadow:0 0 ...

Mohammad Towhidul Islam

23-Sep-14 11:36:53 am

Learn JavaScript selection and loop structure with examples

Question 1. Make a JavaScript program which will take a student roll number (1 to 5) as a key and will print corresponding name (1 for “Jahid”, 2 for “Siful”, 3 for “Imran”, 4 for “Tarek”, 5 for “Shahad” ) otherwise will print “Unknown Roll” using switch-case structure.

 Answer: 
 
<script>...

Mohammad Towhidul Islam

18-Sep-14 01:46:51 pm

Display Fibonacci Series in javascript

In mathematics, the Fibonacci numbers or Fibonacci sequence are the numbers in the following integer sequence:

 0,1,1,2,3,5,8,13,21,34,55 ... 

or (often, in modern usage):

 1,1,2,3,5,8,13,21,34,55 ... 

Following code prints Fibonacci series: number between 0-10
 
<script>
var n=10, first ...

Mohammad Towhidul Islam

02-Sep-14 09:36:44 am

Learn JavaScript in 1 hour

Index 
Getting started JavaScript
Variable and Datatype
Oparators
Control Structure
Data Structure (Array,JOSN)
Function
Object (Core,DOM,BOM)
Event Attribute and handling

 Getting Started JavaScript: 

 step 1.  Create a new HTML document name  example1.htm  using notepad...

Ariful Islam

12-Aug-14 10:46:54 am

Checking Largest Number

যদি একাধিক সংখ্যা থেকে (ধরি তিনটি) যাচাই করে সবচেয়ে বড় বা বৃহত্তম সংখ্যা আমরা বের করতে চাই তবে খুব সহজেই IF ফাংশন এর মাধ্যমে আমরা তা করতে পারি । এক্ষেত্রে আগে থেকেই IF এর ব্যবহার জানা থাকা ভাল। যেমনঃ   if(শর্ত){শর্তটি প্রযোয্য হলে এ অংশটি কাজ করবে}else{শর্তটি প্রযোয্য না হলে এ অংশটি কাজ করবে}; 
পরি...

Mohammad Towhidul Islam

12-Jul-14 04:19:31 pm

Create simple dynamic ExtJS Grid

<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>Untitled Document</title>
<link href="lib/ext-2.0.1/resources/css/ext-all.css" rel="stylesheet" />
<...

MD. AIUB ALI

12-Apr-14 06:09:03 am

Suppose on a first time writing hotel will show blink after

...

Mohammad Towhidul Islam

20-Feb-14 05:22:01 pm

Javascript and object oriented programming oop

Terminology Class 
    Defines the characteristics of the Object.
 Object 
    An Instance of a Class.
 Property 
    An Object characteristic, such as color.
 Method 
    An Object capability, such as walk.
 Constructor 
    A method called at the moment of instantiation.
 Inheritance ...

Mohammad Towhidul Islam

19-Feb-14 03:39:33 pm

Create update and delete javascript cookie

What is Cookie? Cookies are data, stored in small text files, on your computer.Cookies are saved in name-value pairs like:
username=Jahidul Islam Create a Cookie with JavaScript 
Make a simple cookie just assigning name-value pair
 
 document.co...

Mohammad Towhidul Islam

15-Feb-14 04:27:36 pm

Input validating a html form with javascript regular expression

<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>JavaScript Form Input Validation</title><br>


<script type="text/javascript">

function isValidForm(f,containe...

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