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Preview: About.com JavaScript: Most Popular Articles

About.com JavaScript: Most Popular Articles



These articles are the most popular over the last month.



Published: Wed, 07 Dec 2016 11:23:39 +0000

 



Are JavaScript and Java the Same Language?

2016-12-07T11:23:39Z

What is JavaScript? It's a popular programming language. This article will answer all your basic questions about what JavaScript is and how to use it.



Everything You Need to Learn JavaScript

2016-12-07T11:23:39Z

Want to use JavaScript on your web pages? There are several alternatives.



Analysis Quiz

2016-12-07T11:23:39Z

Use this quiz-maker script to write an analysis quiz with valued answers for your website.



What is JavaScript Used For?

2016-12-07T11:23:39Z

What is JavaScript used for? Just where does JavaScript fit into the overall picture when it comes to building web pages correctly? Learn more.



Looking to Download JavaScript Snippets? Here's...

2016-12-07T11:23:39Z

You don't have to pay for JavaScript, and you don't have to write it yourself either -- unless you want to. Find out about free JavaScript downloads.



HTML in Javascript

2016-12-07T11:23:39Z

A simple form that will convert HTML source code into Javascript.



Find When a Web Page Was Last Updated with This...

2016-12-07T11:23:39Z

Want to know when a web page you're on was last updated? Here's a JavaScript command you can use in your browser to display its last modified date.



Why JavaScript

2016-12-07T11:23:39Z

How should you use JavaScript so that it enhances your site.



Bitwise Operators

2016-12-07T11:23:39Z

The Javascript bitwise operators don't get used a great deal but they do have their uses.



Here's How to Convert Numbers into Words with...

2016-12-07T11:23:39Z

It's easy to show the results of calculations as numbers, but converting numbers into word form is more complex. This JavaScript let you do this.



Two Types of JavaScript

2016-12-07T11:23:39Z

Some JavaScript code just makes your page look a little nicer and more interactive. Other JavaScript provides more essential functionality.



JavaScript Decision Making - If and Switch/Case...

2016-12-07T11:23:39Z

JavaScript has two ways it can make decisions on what code to run. The more commonly used way is to use if statements but switch statements also have their uses.



Final Javascript Quiz

2016-12-07T11:23:39Z

Test your knowledge of Javascript with this 50 question quiz.



A Brief History of Javascript

2016-12-07T11:23:39Z

What is Javascript, who created it, and who controls the standards?



Here's What JavaScript CAN'T Do

2016-12-07T11:23:39Z

There are a few things that the JavaScript programming language does not let you do



What Does JavaScript Look Like?

2016-12-07T11:23:39Z

Once advantage to JavaScript is that it is actually downloaded to the local computer before it is interpreted by the browser. This means you can view the source to see the JavaScript. You just need to be able to tell what parts of the page content are JavaScript and what are HTML and CSS.



The Correct Way to Create Links in JavaScript

2016-12-07T11:23:39Z

Some ways of attaching JavaScript into your web page are better than others. Here we consider the alternative ways that you can attach JavaScript events to your page content.



JavaScript Making Decisions

2016-12-07T11:23:39Z

You can nest one IF statement inside another using JavaScript.



How Hard is JavaScript To Learn?

2016-12-07T11:23:39Z

How difficult something is to learn depends on what you already know and how similar the new thing is to what you know.



Tools for Making JavaScript

2016-12-07T11:23:39Z

What tools do you need to write JavaScript?



Here's How to Add a Print Button to Your Web Page

2016-12-07T11:23:39Z

Here are simple code additions you can use to insert a print button or a print link to your web page, and define what content will be printed.



\$ and _ in JavaScript

2016-12-07T11:23:39Z

The $ and _ characters are treated differently in JavaScript to the way you might expect. JavaScript considers them to be letters in some circumstances rather than special characters.



Getting Rid of document.write

2016-12-07T11:23:39Z

The document.write statement was an essential part of early JavaScripts but is now completely unnecessary as anything that can be done with document.write can be done better using innerHTML.



JavaScript and JScript : What's the Difference?

2016-12-07T11:23:39Z

JavaScript and JScript, different languages for different browsers.



Understanding What Order to Run JavaScript Code

2016-12-07T11:23:39Z

What order does JavaScript run its code in?



Hiding Your Email Address

2016-12-07T11:23:39Z

Conceal your email addressfrom spam spiders.



Understanding 'Switch' Statements in Javascript

2016-12-07T11:23:39Z

This example shows how to use a JavaScript switch statement to provide more than two alternative paths.



Add Continuously Scrolling Images to Your...

2016-12-07T11:23:39Z

This script allows you to display horizontal marquees of continuous scrolling images without a break except when the mouse is moved over them.



Object Oriented JavaScript

2016-12-07T11:23:39Z

Why should use use an object oriented approach to JavaScript? Here are some reasons.



Should You Have a Shorter IF Statement?

2016-12-07T11:23:39Z

When you are assigning different values to a single field depending on a condition, JavaScript provides a way to combine the decision into the assignment.



How to Add Radio Buttons to a Web Page

2016-12-07T11:23:39Z

Everything you need to know about radio button creation, including grouping buttons, associating text with each button and validating user selections.



Bulletin Board / Forum Code Converter ...

2016-12-07T11:23:39Z

Convert your pre-prepared forum entries between text, HTML, and bbCode with this script.



The JavaScript Modulo Bug

2016-12-07T11:23:39Z

The modulo operator in JavaScript does not return the correct value for negative numbers.



JavaScript Functions

2016-12-07T11:23:39Z

A function is more versatile than just running the same code each time because you can substitute different values into rach run as well.



Why Return A Value

2016-12-07T11:23:39Z

Many web pages describe how to return a value from a function in JavaScript. This page explains why you should want to do so for most of your functions.



href="#"

2016-12-07T11:23:39Z

A # by itself in the href attribute is not valid. Sites teaching you how to write HTML and JavaScript use it as a placeholder that should be replaced in live code with a real destination.



Learn Modern Unobtrusive JavaScript

2016-12-07T11:23:39Z

In JavaScript functions and methods are exactly the same thing as all functions are methods.



Use This JavaScript Code to Scroll Text on Your...

2016-12-07T11:23:39Z

This JavaScript allows you to display one or more marquees containing text that will scroll continuously except when the mouse is moved over them.



Floating Point and JavaScript

2016-12-07T11:23:39Z

JavaScript doesn't always give you the exact answer you expect when you start using decimals. Here's Why.



A Simple Guide to Using "Ternary" Operators in...

2016-12-07T11:23:39Z

The ternary operator provides a shorter way of writing some JavaScript if statements as this example demonstrates.



Improve Your Web Page by Moving JavaScript to...

2016-12-07T11:23:39Z

You don't have to code JavaScript into your web page's HTML document. For efficient JavaScript, move it to an external file and link to it instead.



Learn to Target a Window or Frame Using...

2016-12-07T11:23:39Z

Learn how to use top.location.href in JavaScript, plus coding in HTML, to target links so that they open in a new window or frame.



Browser Window Size and Position

2016-12-07T11:23:39Z

Depending on the browser type, screen resolution and other settings, the size of a browser window may vary considerably. The solution? A collection of JavaScript functions that return information about the size and position of the browser window. This article explains how they work.



How to Use 'GET' and 'POST' for Server Requests...

2016-12-07T11:23:39Z

When should you use GET and when should you use POST with Ajax.



Countdown Timer

2016-12-07T11:23:39Z

Provides a countdown to a given date and time.



Everything you Need to Know About Ajax...

2016-12-07T11:23:39Z

When should you use asynchronous Ajax calls and when should you use synchronous.



Using JavaScript to Disable Right Clicks, and...

2016-12-07T11:23:39Z

You can disable access to the right-click context menu on your website with this JavaScript, but it may annoy your visitors, and it can be thwarted.



Do This Instead of Updating Global Variables in...

2016-12-07T11:23:39Z

As well as being able to pass parameters to a function in JavaScript, we can also return a value from the function. Get a tutorial on how to do this.



Long

2016-12-07T11:23:39Z

JavaScript Glossary definition for: Long



JavaScript for Beginners

2016-12-07T11:23:39Z

Before beginners to JavaScript can start writing their own scripts they first need to understand some of the basic terminology and concepts.



The Scope of Variables

2016-12-07T11:23:39Z

JavaScript variables have a different scope from what you would expect from other programming languages.



Daylight Saving Time

2016-12-07T11:23:39Z

How to add methods to the JavaScript Date object that allow you to determine if your visitor is on daylight saving time.



The Bad Parts of JavaScript

2016-12-07T11:23:39Z

There are some constructs allowed in JavaScript where you just make things more difficult for yourself if you use them.



JavaScript By Example

2016-12-07T11:23:39Z

JavaScript allows you to pass a function to another function as a parameter and then call back to that function from within the function you pass it to.



Random Array Sort

2016-12-07T11:23:39Z

How to 'sort' an array in random order.



Using window.onload

2016-12-07T11:23:39Z

How to attach onload processing to a page without adding it to the body tag.



Getting Started

2016-12-07T11:23:39Z

Introduction to a series of tutorials on programming with JavaScript



Writing Cookies

2016-12-07T11:23:39Z

How to write a cookie with Javascript.



Referring Site

2016-12-07T11:23:39Z

How to determine which site your visitor was last on.



Javascript and XHTML

2016-12-07T11:23:39Z

How to put a Javascript on an XHTML page so that it will pass validation.



Print Directly to Printer With JavaScript Not...

2016-12-07T11:23:39Z

An explanation of some of the reasons why Javascript can't print a page without the print dialog popping up.



Using HTML to Create Collapsible Div Menus

2016-12-07T11:23:39Z

HTML collapsible div menus save space on the web page. The content heavy page becomes “decluttered” which improves its aesthetic and functionality.



Google Maps - Satellite Images

2016-12-07T11:23:39Z

How to create and use Google Maps.



Week of Year Date Method

2016-12-07T11:23:39Z

How to add a method to Javascript dates that allows you to get the week number.



Use This JavaScript Code to Add a Memory Game...

2016-12-07T11:23:39Z

Test your website visitors' memory skills by adding the memory game known as Concentration to your web page using this simple JavaScript code.



Credit Card Validation

2016-12-07T11:23:39Z

Validate credit card numbers in forms with this Javascript routine for validating the length and check digits.



Modal Windows

2016-12-07T11:23:39Z

How to make a window maintain the focus in those browsers that support it.



What Version of Javascript

2016-12-07T11:23:39Z

Determining which version of Javascript is supported by a browser.



How to Identify and Fix Common Javascript Errors

2016-12-07T11:23:39Z

Mind you brackets and avoid this common javascript error.



Block Exit Blockers User Script

2016-12-07T11:23:39Z

Block onbeforeunload to stop web pages using exit blockers.



How to Split Webpage JavaScript into Separate...

2016-12-07T11:23:39Z

When you first write a new JavaScript the easiest way to set it up is to embed the JavaScript code directly into the web page.



Reserved Words

2016-12-07T11:23:39Z

A list of Javascript reserved words and other words with special meanings.



Javascript Format and Colour

2016-12-07T11:23:39Z

Unobfuscate, format, and colour-code a Javascript.



menubar

2016-12-07T11:23:39Z

JavaScript Glossary definition for: menubar



HTML and the DOM

2016-12-07T11:23:39Z

You need to understand how the Document Object Model relates to your HTML source if you expect JavaScript to update the web page correctly.



Password Generator

2016-12-07T11:23:39Z

Create your own secure passwords that meet certain length and content requirements.



JavaScript Form Processing

2016-12-07T11:23:39Z

Changes to both JavaScript and HTML have affected the way we should be using JavaScript to validate our forms and will affect it further in the future.



Calculator Tutorial

2016-12-07T11:23:39Z

A series of tutorials explaining one way to use Javascript to create a calculator.



Counting Words

2016-12-07T11:23:39Z

How to use Javascript to count the number of words that have been entered into a text area.



The Three Parts of JavaScript

2016-12-07T11:23:39Z

Javascript and JScript each have the same three parts in their specifications.



Using Increment and Decrement Operators in...

2016-12-07T11:23:39Z

For those new to programming the difference between ++i and i++ is not obvious. Here's a simple example to explain the difference.



How to use script tags to link to external...

2016-12-07T11:23:39Z

To link to external JavaScript, use Script tags. These attributes will attach another JavaScript to the page, allowing further JavaScript code to run.



setTimeout or setInterval

2016-12-07T11:23:39Z

What is the difference between setTimeout and setInterval?



How to Write a Session Cookie in Javascript

2016-12-07T11:23:39Z

Web browsers distinguish between three different types of cookies. These types are session cookies, first party cookies, and third party cookies.



Learn JavaScript Basics (Objects, Functions,...

2016-12-07T11:23:39Z

A series of example JavaScript that shows you how to write JavaScript.



Body Mass Index Calculator

2016-12-07T11:23:39Z

This body mass index calculator uses your height and weight to calculate your BMI.



How using innerHTML can save you some time

2016-12-07T11:23:39Z

The innerHTML property is a convenient way to access the entire content of the HTML container. It can be used to either retrieve from or insert content into a container.



Copy and Paste

2016-12-07T11:23:39Z

How to copy and paste Javascripts.



Function to Read Parameters Passed Via Q...

2016-12-07T11:23:39Z

How to pass parameters between pages using query strings.



Day of Year Date Method

2016-12-07T11:23:39Z

How to add a method to Javascript dates that allows you to get the day of the year.



Add or Subtract Business Days

2016-12-07T11:23:39Z

How to add a method to Javascript dates that allows you to add or subtract business days from a date.



Why You Shouldn't Use JavaScript in Emails

2016-12-07T11:23:39Z

Why not to use JavaScript with emails? Well there are some good reasons why JavaScript and Emails don't go together.



Using Pre-written JavaScript Scripts

2016-12-07T11:23:39Z

The actual steps required to use a pre-written JavaScript with your page are not always included with the script. Here is a step by step list of what you need to do in order to be able to use any pre-written JavaScript in your page. You will still need to refer to the instructions with the script for the details though.



JavaScript Encryption

2016-12-07T11:23:39Z

Effective encryption using JavaScript



JavaScript Library or Code Yourself

2016-12-07T11:23:39Z

Should you use a JavaScript library or write all the code yourself. Both ways have advantages and disadvantages.



JavaScript and HTML 5

2016-12-07T11:23:39Z

One of the proposed additions to HTML 5 will make validating form fields in the browser slightly easier.



What 'Interpreted' and 'Compiled' Means in Java

2016-12-07T11:23:39Z

JavaScript runs as an interpreted language in the web browser. This impacts on how you need to write your code in ways you wouldn't need to worry about if it were compiled.



Deleting Cookies

2016-12-07T11:23:39Z

How to delete a cookie with Javascript.



Testing JavaScript

2016-12-07T11:23:39Z

There is only one way to find out if a script you have written will work properly. You test the script to see if it produces the expected results for a variety of alternative situations.



Choosing Pre-Built Scripts

2016-12-07T11:23:39Z

Easy tests to determine if pre-built scripts have been properly tested by their author