JavaScript and AJAX Web Development Tutorials

JavaScript, jQuery and AJAX (Asynchronous JavaScript and XML) Tutorials.
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All web developers require to implement some JavaScript in their web applications. JavaScript arrays support a few in-built array manipulation methods like push,pop, but we might require more like unshift, shift, sort, shuffle, contains, clear and others. In JavaScript array being an...
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Sometimes we need a sorted UL (un-ordered list) in a static page, like a blog, we can use JavaScript to the sort the list. I faced a similar problem with my blog, so I implement a simple bubble sort on the list, the list will be sorted if the browser supports JavaScript, else it will still...
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We sometimes require to get the query parameters of an URL in JavaScript, here's how we can do that. // get the current URL var url = window.location.toString(); //get the parameters url.match(/\?(.+)$/); var params = RegExp.$1; // split up the query string and store in an //...
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Sometimes we need the user to enter only numbers in a text field, so I have some up with a small piece of JavaScript to do exactly that. It works for both IE and Firefox. function onlyNumbers(evt) { var e = event || evt; // for trans-browser compatibility var charCode = e.which ||...
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An operator is a symbol applied to data values that causes the computer to carry out a specific operation on that data . In VBScript, operators are used to perform an operation. For example, an operator could be used to assign a value to a variable. An operator could also be used to compare two...
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Introduction The second type of procedure is called a function. Like a subroutine, a function also holds a series of VBScript statements. The only difference is that a function actually returns a value to the code statement that called it. A function is a block of code that can be called from...
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Introduction The throw statement allows you to create an exception. If you use this statement together with the try...catch statement, you can control program flow and generate accurate error messages. Use the throw statement to throw an exception. When you throw an exception,...
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Programming errors are a fact of life, but pulling your hair out while tracking down these errors should not be. More robust development languages such as Java and the .NET family of languages have development environments that simplify the process of tracking down problems. JavaScript developers...
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jQuery is a client-side JavaScript library, the goal of the library is to simply the process of writing cross-browser JavaScript code. jQuery was created by John Resig and it was released to the public in 2006, jQuery is free, open-source and is dual-licensed under the MIT license & GNU GPL Version...
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JavaScript is widely used for client side scripting ranging from simple effects to creating a rich UI like GMail. A significant operation with the client browser involves working with the browser window, like scrolling, resizing popup window, detecting window resize by the user, opening new...
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It is highly recommended that you are familiar with HTML and Javascript before reading tutorial. Notice that this article is only glimpse on this topic, it barely covers all the AJAX features and stuff. This tutorial will show you how 'Ajax' works and how to use it from a web developer's...
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JavaScript, the most popular & most used client-side scripting language on the internet is really powerful in creating rich user experience by itself. One of the best example of JavaScript excellence is the jQuery library which has helped developers all over the world to build the business...
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AJAX was a boon to web development and web applications like GMail etc. millions of site have since implemented AJAX based features on their websites, the idea of asynchronously accessing content was wonderful but AJAX was limited only to the same domain (same origin) as the page requesting the...
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So i was working on an awesome project when i wanted to extract GET parameters from the URL string. Like in php $_GET, i need to use javascript since the front end is building on an REST API . You probably should ave seen this feature used in google search and may others, but the problem is...
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There are multiple ways to attach an event handler in jQuery but all of them does not function exactly the same way. If there are elements created after DOM is loaded, then not all the events associated with them would be triggered if you have not attached the event handlers correctly. Example ...
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The DOM enabled parser is used for accessing the features of the application. The parser reads the XML document and parses to check that it is valid. The in memory representation of the XML document containing the elements is organized in the tree structure. There are nodes in the structure. ...
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XML is used for designing the web pages in an application. XML means Extensible Markup Language. It is a markup language containing tags to define data. The tags used in the language contain the content specific meaning. The data is stored in a structured format. XML is a cross platform, hardware...
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When the user creates a document in HTML, the browser is capable of understanding and using the tags. When XML is used, the browser does not know how to display the elements. The XSL language is used for this purpose. The XSL language has two parts as follows XSL Transformation (XSLT): The...
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An XML document consists of several elements. The XML schema defines the list of elements and attributes that can be used in the XML document. The orders in which the elements appear are defined in the XML schema. The XML Schema Definition (XSD) defines the schema of the XML document. XML Schema...
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The include element The element is used to refer to an external schema located in a definite address. The syntax for using the element is as shown below: <include id="ID" schemaLocation="filename" /> The element contains two attributes as id and schemaLocation. The id specifies the...
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