JavaScript and AJAX Web Development Tutorials

JavaScript, jQuery and AJAX (Asynchronous JavaScript and XML) Tutorials.
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Introduction One Javascript function that gets used such frequently than it should to be is "eval". "eval" evaluates the content of a text string passed to it and then executes it as if it were normal Javascript code.. Actually, we should never use eval for any purpose in our code, be it...
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I needed to trim a string and also replace more than one spaces with a single space. The solution was simple with String.replace in JavaScript. Here's the code: var m = " My name is Pradeep "; m = m.replace(/^+/,'').replace(/+$/,'').replace(/{2,}/,' '); Making a function out of it. ...
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The Javascript Code : function autoCompleteDB() { this.aNames=new Array(); } autoCompleteDB.prototype.assignArray=function(aList) { this.aNames=aList;
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Essentially, writing some code to determine the number of days in a given month of a given year with javascript is not the worlds most difficult task. It is the type of exercise that one would expect to be given as a newbie developer during a lab or lecture. The solution normally involves...
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Introduction A random number generator (often abbreviated as RNG) is a computational or physical device designed to generate a sequence of numbers or symbols that lack any pattern, i.e. appear random. Computer-based systems for random number generation are widely used, but often fall short of...
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Introduction Ajax, or AJAX, is a web development technique used for creating interactive web applications. The intent is to make web pages feel more responsive by exchanging small amounts of data with the server behind the scenes, so that the entire web page does not have to be reloaded each...
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There are hundreds of DHTML trees available online, most of them and written from scratch, some easy to understand and implement, while others are real pain to customize. Some of them need a JavaScript array to be populated or read an XML file to generate the tree. I've tried to develop one...
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Have you ever wondered when you see form on some website submitted in a fraction of a second? Have you ever wanted such forms on your site? This is it. Let us take a sample form. <form method="post" action="SubmitToSomeFile" id="frm" accept-charset=UTF-8 name="frm"> <table...
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Feedburner statistics are not part of Google Analytics and I couldn't understand why but you can track Feedburner Email Subscription Form Submission in Google Analytics Very easily. Activate Email Subscription for your Feed in Feedburner and grab the HTML code of your subscription form. The HTML...
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On many forums like DigitalPoint you would see lots of people claiming to be making thousands of $$$ with an ebook that costs $1 and have lots of screenshots to show you as well. Never trust those. This can be done in Firefox and IE7 with just one line of code. Yes its true. One line exactly. ...
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Sometimes, we need to rotate images on ours web pages, it may be ads or some simple images.Below you'll find the code for implementing the same. You can create as many image rotations you want, you just need to specify the urls of the images in an Array, and the object where the image will be...
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Introduction Regular expressions is a form of pattern matching that you can apply on textual content. Take for example the DOS wildcards ? and * which you can use when you're searching for a file. Creating a Regular Expression You construct a regular expression in one of two ways: 1)...
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Background Many time we found the file worm.vbs in our computer in each dir. worm.vbs may or may not be malicious. but when they execute's they consume CPU. So, Better option is to remove them. but it is tough job as they exist in each dir. I written a vbScript to...
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I found that is difficult to search a simple javascript code about scrolling image slide. You can find them on Internet but they often are long and complex or hidden from us to prevent edit. I just found a simple way to resolve this. I hope it will help your editting easier to make it yours! We...
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Desktop notifications for web applications is a great plus, the user can be notified irrespective of the current window/tab they are using. Chrome, which has the largest share of the browser market, supports desktop notification, also Safari, or any webkit based browser. You can easily...
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The DOM consists of several objects for manipulating the data. The DOMDocument object is the main object of the DOM. The op node of the tree is represented through this object. The XMLSchemaCache object is used to load the schema associated with the XML document. Some of the methods provided by...
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There are two elements that are used to specify conditions for formatting: The if element The choose element 1. The if element In XSLT, the if element provides a if – then construct. The syntax of if element is as shown below: <xsl: if test = “condition” >
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What is AngularJs? AngularJS is an open source web application framework; to be more precise, javascript framework. It is introduced mainly to address and overcome the challenges of developing single page applications (SPA). It is framework for front end model-view-controller (MVC) architecture,...
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How to add and remove entries in collection data Suppose we have a collection of data (array, list etc), which we are rendering into view using AngularJS framework. We want to add data into the collection as well as remove from it using Angular view. We can do it easily using some data binding...
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Pagination could make a page look very clean interms of huge data. It is the process of dividing electronic or web pages into discrete or printed pages. Basically it is used for such things as displaying a limited number of results on search engine results pages to divide returned data and display...
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