Easy Java Script Timer Code
Sometimes you need something to happen after a delay, or you need something to occur repeatedly. This can be accomplished using Java Script timers. My objective in this article is to give you the timer code without surrounding it with a lot of confusing peripheral code so you can quickly use it for your own purposes. More ...
JavaScript Code to Add or Remove Specific Elements of an Array
Arrays are very useful in programming because they can be used like a data base. In this article you learn JavaScript with code examples to add or remove specific elements of an array. More ...
Java Script to Get Selected Item from Drop-down Select List
An HTML Select list is a form control used to create a drop-down list of items from which the user can select. This article provides code to get the selected item from a select list. More ...
Introduction to JavaScript Programming
JavaScript is a wonderful little programming language. It's a client-side, meaning it runs right on your local computer, not on the web server, and it's a scripting language meaning
it's run by an interpreter. More ...
Concatenating a String and Another Data Type
To concatinate a string and a number, use the styring concatination operator. This is because JavaScript converts the number to a string. To use the + operator with a number, or numbers that are in string data type requires using parseInt() or parseFloat() to convert the strings to numbers. More ...
Replace Drop-down with Drag-and-drop
From a webpage designers point of view, drop-down lists require a lot of html tags. Wouldn't it be nice if you could just let the user drag-and-drop text into a simple text box. You can! More ...
Debugging JavaScript : Coercions
JavaScript is not a tightly typed language. Sometimes this comes in handy, but other times it can cause problems. More ...
Code to Drag and Drop an Image Anywhere on a Webpage
HTML5's drag-and-drop standard is designed to let you drag text or data from a textbox or table cell, to another textbox or table cell. But what if you want to drag an image, not to a target element, but to anywhere on a webpage. Then HTML5 drag-and-drop falls short. More ...
JavaScript to Set Checkbox to Readonly
The HTML checkbox element does not have a readonly attribute. This example provides a very simple work around that might help you solve the checkbox readonly problem in your own application. More ...
Round a Float to 4 Digits to the Right of the Decimal Point
On the typical PC, Java Script Math object methods can return floating point numbers with up to 16 digits to the right of the decimal point. For most purposes, this kind of accuracy is not required, nor desired, and that many digits causes nothing but confusion. In this article, You'll learn how to round a floating point number to 4 digits to the right of the decimal point. More ...
Regular Expression Position Matching
In this article you how to use regular expressions to match characters at the beginning, end, both beginning and end, or at any specified location in a string. More ...
HTML5 and Local Storage
The HTML5 local storage mechanism is a nice replacement for cookies with it you can write up to 5MB of persistent data between multiple pages to a special file on the client computer. More ...
