Free scripts for computer programmers and developers!
Scripting languages have definitely becoming more popular and every day more and more people are interested in doing what they can. Some of them are more advanced than others, such as Perl, or Ajax.
What is the best place to find some free scripts, if not the Internet? It is guaranteed that a simple search on the Internet some of the most interesting web scripts that you will reveal've ever seen. Whether you are looking for a PHP script, ASP script, or Perl script can be sure what you're looking for. At the same time, you will have the opportunity to find out that programming (web scripts are) generally used to improve existing sites to improve certain properties. The interesting thing is that will be processed during the server functions, the web scripts function on the user's browser.
There are many reasons why you could be interested in using scripting languages and free web scripts. You can appeal to a PHP script in order to make different interfaces, to any other type of script to improve the functionality of a search engine and in general, to web scripts to make web-based emails easier to use.
Programming language has become popular all sites, in the HTML has been closed, in fact contribute to the World Wide Web functions. Today, there are a pair of Web search script that a lot of people hope that they will contribute to the use of scripting languages through the development of the Internet. You know, a free script that can be used to create an extensive menu to add graphics to web pages or dynamic ad creation, and even (this is why they are also called dynamic languages reasons).
The development of the Internet and the wealth of information directly contributed to the popularization of scripting languages. Specialized resources devoted to this theme throughout, and offers free scripts (ASP, Ajax, PHP, GCI, Perl) for all those who are interested. Many more examples of scripting languages could be given, but you will certainly find it on your own. There are DHTML tutorial, if you still want to gain more knowledge, and devoted an impressive number of tutorials on the most popular programming languages - ASP tutorial, PHP or Perl tutorial tutorial.
Search Professional Web directory script, how to select from. Also provide that if there is something you can freely submit your own scripts. Enjoy the list from the time and resources, the most recent additions, please do not forget to check whether or not to exist on the website. The most important thing is to get hold of quality software for the web in my mind!
Posted in: ajax tutorial| Tags: Internet ajax computer web search place day perl internetit scriptingASP.NET 3.5 Hosting - Guides on ASP.NET 3.5 Hosting Tools and Developments
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ASP.NET AJAX Control Toolkit is another have been incorporated into the hosted solution, including applications. This application is to make the code samples, and a software development tools. Its basic advantage is that it allows Web hosting providers, so that their websites or web pages at any time, more intuitive appeal. The tool ensures that users can add beauty without difficulty on his website.
Web services such as membership, authentication, profiles, management, etc. are also supported by ASP.NET 3.5 hosting. These services are primarily ASP.NET application.
ASP.NET 3.5 hosting web hosting provider also makes the establishment of such sites, enabled ASP.NET AJAX. Users also have the opportunity to create such a website, so that helps with the Microsoft AJAX Library of WCF and ASMX.
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Posted in: asp.net| Tags: NET Windows ajax Access web value asp php hosting goldpumaAsp.net and Ajax Help to Succeed in Outsourcing Software Development
Each professional offshore software development company provides many different services. It includes off-shore software outsourcing and software development in order to provide quality low cost services and products for their customers. Of outsourcing software development is an integral part of the custom software development. This service, they have experts also considerable, as ASP.Net and Ajax is so popular, and so on, this is the real customer support systems, workflow automation, and distribution of technical expertise needed for development.
The term Ajax has a meaning Asynchronous JavaScript and XML. There is a new technology for Web development, interactive web-based applications homework. The most important feature of Ajax programming is that it helps the web pages easier loading and development of sensitive responding. It also has another big advantage - Ajax provides the ability to change the dates of your website, and there is no need to reload the entire page. Ajax development includes all the advantages of such a well-known server technologies such as CSS, XSLT, XML and XHTML, it also includes some features of the scripting language, Java Script.
One of the best benefits of using Ajax is that it will update the section of the site at any time, giving the users an immediate answer to their questions and input.
When we talk about updating web page is almost similar to server-side technology named ASP. There is the latest version of ASP, ASP.Net, is invoked. The difference between ASP.Net from ASP is that the former has a wider development interface that easily allows for server-use controls. The creation of the ASP was associated with the change of Web pages of content. There used to be such a situation, if the information from Web pages is static, but after a certain time, it was necessary to protect the data manually, but automatically and dynamically. The company, Microsoft was the first to Active Server Pages (ASP) to introduce.
The new ASP has a lot of advantages over the older version. At first, it has faster application runtime. Also, it has more flexibility concerning user defined controls. This version has rich user interface, which helps in application development. One of the important features is also more capabilities for coding, which gives the possibility to code in different languages, including VB.Net, C#, J# etc.
The features of Ajax, which may be associated with Visual Studio 2005, you can develop your ASP.Net website to the next level. This mix of technologies will give us the opportunity to create the interfaces of the next generation and it will help to achieve success in outsourcing software development.
Introduction to Ajax
Brief history
Ajax is only a name given to a set of tools that were previously existing.
The main part is XMLHttpRequest, a class usable in JavaScript , that was implemented into Internet Explorer since the 4.0 version.
The same concept was named XMLHTTP some times, before the Ajax name becomes commonly used.
In 2005, the use of XMLHttpRequest by Google, in Gmail and Google Maps contributed to the success of this format. However, this is the name of Ajax itself acquired technology is so popular.
Why to use Ajax?
Mainly to build a fast, dynamic website, but also to save resources.
To improve sharing of resources, not only it is better to use the power of all client server and network unique. Ajax on the client JavaScript () operation can be performed with data retrieved from the server.
The processing of web page formerly was only server-side, using web services or PHP scripts, before the whole page was sent within the network.
But Ajax can selectively modify one part of a page displayed by the browser, and does not inform the need to load the entire document with all the icons, menus, etc. ..
For example, fields of forms, choices of user, may be processed and the result displayed immediately into the same page.
What is Ajax in depth?
Ajax is a set of technologies, supported by a web browser, including these elements:
HTML and CSS for presenting.
JavaScript (ECMAScript) for local processing, and DOM (Document Object Model) to access data within the page or read access to elements of the XML file on the server (with getElementByTagName method, for example) ...
The XMLHttpRequest class read or send data on the server asynchronously.
optionally...
The DomParser class may be used
PHP or another scripting language may be used on the server.
XML and XSLT to process the data if returned in XML form.
SOAP may be used to dialog with the server.
The "Asynchronous" word, means that the response of the server while be processed when available, without to wait and to freeze the display of the page.
How does it works?
Ajax uses a programming model with display and events. These events are user actions, they call functions associated to elements of the web page.
Interactivity is achieved with forms and buttons. DOM allows you to connect the elements on the page with activities and also to extract data from XML files provided by the server.
To get data on the server, XMLHttpRequest provides two methods:
- open: create a connection.
- send: send a request to the server.
Data furnished by the server will be found in the attributes of the XMLHttpRequest object:
- responseXmlfor an XML file or
- responseTextfor a plain text.
Take note that a new XMLHttpRequest object has to be created for each new file to load.
We must wait for data to be available in this process, and to this end, the state of the data availability given the status of readyState XMLHttpRequest.
States of readyState follow (only the last one is really useful):
0: not initialized.
1: connection established.
2: request received.
3: answer in process.
4: finished.
Ajax and DHTML
DHTML has same purpose and is also, as Ajax, a set of standards:
- HTML,
- CSS,
- JavaScript.
DHTML allows to change the display of the page from user commands or from text typed by the user.
Ajax allows also to send requests asynchronously and load data from the server.
The XMLHttpRequest class
Allows to interact with the servers, thanks to its methods and attributes.
Attributes
readyState the code successively changes value from 0 to 4 that means for "ready".
status 200 is OK
404 if the page is not found.
responseText holds loaded data as a string of characters.
responseXml holds an XML loaded file, DOM's method allows to extract data.
onreadystatechange property that takes a function as value that is invoked when the readystatechange event is dispatched.
Methods
open(mode, url, boolean) mode: type of request, GET or POST
url: the location of the file, with a path.
boolean: true (asynchronous) / false (synchronous).
optionally, a login and a password may be added to arguments.
send("string")null for a GET command.
Building a request, step by step
First step: create an instance
This is just a classical instance of class, but two options must be tried, for browser compatibility.
if (window.XMLHttpRequest)// Object of the current windows
{
xhr = new XMLHttpRequest();// Firefox, Safari, ...
}
else
if (window.ActiveXObject)// ActiveX version
{
xhr = new ActiveXObject("Microsoft.XMLHTTP");// Internet Explorer
}
or exceptions may be used instead:
try {
xhr = new ActiveXObject("Microsoft.XMLHTTP");// Trying Internet Explorer
}
catch(e)// Failed
{
xhr = new XMLHttpRequest()
}
Second step: wait for the response
Further response and handling are included in a function, the function returns are to be assigned to the onreadystatechange property of the object previously created.
xhr.onreadystatechange = function() { // instructions to process the response };
if (xhr.readyState == 4)
{
// Received, OK
} else
{
// Wait...
}
Third step: make the request itself
Two methods of XMLHttpRequest are used:
- open: command GET or POST, URL of the document, true for asynchronous.
- send: with POST only, the data to send to the server.
The request below read a document on the server.
xhr.open('GET', 'http://www.xul.fr/somefile.xml', true);
xhr.send(null);
Examples
Get a text
function submitForm()
{
var xhr;
try {xhr = new ActiveXObject('Msxml2.XMLHTTP');}
catch (e)
{
try {xhr = new ActiveXObject('Microsoft.XMLHTTP');}
catch (e2)
{
try {xhr = new XMLHttpRequest();}
catch (e3) {xhr = false;}
}
}
xhr.onreadystatechange= function()
{
if(xhr.readyState== 4)
{
if(xhr.status== 200)
document.ajax.dyn="Received:"+ xhr.responseText;
else
document.ajax.dyn="Error code " + xhr.status;
}
};
xhr.open(GET, "data.txt",true);
xhr.send(null);
}
Ajax-based Login Control Without Any Standard Database
Introduction: In this tutorial, I will present a simple Login control based on AJAX. Any login control requires a database which stores all the user profiles like passwords. Server-sided script uses that database to compare against user given strings and matches, shows errors or redirects to appropriate pages, etc. However, the proposed technique does not require any standard database like access, sql, etc. It just requires a native xml flat/text database which has the minimal complexity to implement in practice.
I was looking for this type of simple login approach and finally came up this idea while going though the asynchronous javascript and xml technique (in short AJAX). In many occasions, setting up an external database is cumbersome and not worthy in terms of minimal usages. ?The proposed login control however will help you to remove all the burden, compatibility issues and time. To make it clear, conventional and standard database implementation requires a database server, authentication and authorization before creating a database, database-string to be used in your script which is platform specific and to me always clumsy. To get rid of all the cost and efforts, the proposed approach uses a simple flat database and read the database using (AJAX) to make a nice-looking login control.
Keep reading!
Big Picture: The following figure shows the AJAX-based login to see control. The user can enter his password into the text field. For simplicity, I have all the states on behalf of the United States as passwords. If the user specified string matches with one of the passwords
In this case, string user input does not match any of the pre-fix password, the color of the text box will automatically be yellow. He says the user does not try to do so and to delete some of the characters to try again.
Necessary files: We need 4 files for this login control:
i)??????????????????? script.html
ii)?????????????????? script.css
iii)???????????????? script.js
iv)???????????????? script.xml
The html and CSS file represents the contents and design mainly to show different components. Note that the ‘submit query’ button is kept hidden from visibility. It will only appear when the user-string matches with any of the passwords stored in the xml file.
The javascript file controls the AJAX connectivity and read the password on the fly. As soon as user presses a letter on the textbox, the corresponding function works to check for any match or mismatch and behave accordingly.
While pressing a single character, the function populates all the passwords in a hidden ‘popoups’ (which actually does not popup!) ?html component. The function then matches those strings with the user-given string. If, the popups component is empty, it indicates the user-string is not a prefix of any of the passwords and makes the text box yellow.
However, in case of matching between those two strings, the submit button appears. User now can click and go directly to his desired page.
// ---------------------------- script.html ----------------------------------------
<html>
<head>
??????????? <title>Auto-fill states</title>
??????????? <link rel="stylesheet" rev="stylesheet" onClick="javascript:pageTracker._trackPageview('/outgoing/article_exit_link');" href="script.css" />
??????????? <script src="script.js" type="text/javascript">
??????????? </script>
</head>
<body>
??????????? <form action="#">
??????????????????????? Please enter your Password:
??????????????????????? <input type="text" id="searchField" autocomplete="off" /><br />
??????????????????????? <div id="popups"> </div>
??????????? <input type="submit" id="submitme" style="visibility:hidden">
??????????? </form>
</body>
</html>
// ---------------------------- script.css ----------------------------------------
#popups {
??????????? position: absolute;
??????????? visibility:hidden;
}
#searchField.error {
??????????? background-color: #FC0;
}
// ---------------------------- script.js ----------------------------------------
window.onload = initAll;
var xhr = false;
var statesArray = new Array();
var passArray = new Array();
function initAll() {
??????????? document.getElementById("searchField").onkeyup = searchSuggest;
??????????? if (window.XMLHttpRequest) {
??????????????????????? xhr = new XMLHttpRequest();
??????????? }
??????????? else {
??????????????????????? if (window.ActiveXObject) {
??????????????????????????????????? try {
??????????????????????????????????????????????? xhr = new ActiveXObject("Microsoft.XMLHTTP");
??????????????????????????????????? }
??????????????????????????????????? catch (e) { }
??????????????????????? }
??????????? }
??????????? if (xhr) {
??????????????????????? xhr.onreadystatechange = setStatesArray;
??????????????????????? xhr.open("GET", "us-states.xml", true);
??????????????????????? xhr.send(null);
??????????? }
??????????? else {
??????????????????????? alert("Sorry, but I couldn't create an XMLHttpRequest");
??????????? }
}
function setStatesArray() {
??????????? if (xhr.readyState == 4) {
??????????????????????? if (xhr.status == 200) {
??????????????????????????????????? if (xhr.responseXML) {
??????????????????????????????????????????????? var allStates = xhr.responseXML.getElementsByTagName("item");
??????????????????????????????????????????????? for (var i=0; i<allStates.length; i++) {
??????????????????????????????????????????????????????????? statesArray[i] = allStates[i].getElementsByTagName("label")[0].firstChild;
??????????????????????????????????????????????? }
??????????????????????????????????? }
??????????????????????? }
??????????????????????? else {
??????????????????????????????????? alert("There was a problem with the request " + xhr.status);
??????????????????????? }
??????????? }
}
function searchSuggest() {
??????????? var str = document.getElementById("searchField").value;
??????????? document.getElementById("searchField").className = "";
??????????? if (str != "") {
??????????????????????? document.getElementById("popups").innerHTML = "";
??????????? var flag = 0;
??????????? for (var i=0; i<statesArray.length; i++) {
??????????????????????????????????? var thisState = statesArray[i].nodeValue;
???????????
??????????? if (str == thisState) {
??????????? ?flag = 1;
??????????? }
??????????????????????????????????? if (thisState.toLowerCase().indexOf(str.toLowerCase()) == 0) {
??????????????????????????????????????????????? var tempDiv = document.createElement("div");
??????????????????????????????????????????????? tempDiv.innerHTML = thisState;
??????????????????????????????????????????????? //tempDiv.onclick = makeChoice;
??????????????????????????????????????????????? tempDiv.className = "suggestions";
??????????????????????????????????????????????? document.getElementById("popups").appendChild(tempDiv);
??????????????????????????????????? }
??????????????????????? }
??????????????????????? var foundCt = document.getElementById("popups").childNodes.length;
??????????????????????? if (foundCt == 0) {
??????????????????????????????????? document.getElementById("searchField").className = "error";
??????????????????????????????????? document.getElementById("submitme").style.visibility="hidden";
??????????????????????? }
??????????????????????? if (foundCt > 0) {
???????????????????????????????????
??????????????????????????????????????????????? if ???????? (flag == 1) {?
???????????????????????????????????????????????
??????????????????????? document.getElementById("submitme").style.visibility="visible";
???????????????????????
??????????????????????? }
??????????????????????? }
??????????? }
}
Javascript: Using window.XMLHttpRequest object, the AJAX connectivity starts. The client reads from an XML file, parse required data from it and use that information in the client end.
Then the value is compared against the given string. If it matches with the stored passwords, the ‘submit button’ appears (case B in the figure). However, any mismatch of both strings will keep the submit button hidden from viewing. Also the mismatch is shown by the yellow colour (case C in the figure). Note that case C indicates that the user-given string cannot be prefix of any stored passwords. Therefore user should delete and enter again.
// ---------------------------- states.xml (passwords) ----------------------------------------
<?xml version="1.0"?>
<choices xml:lang="EN">
??????????? <item>
??????????????????????? <label>Alabama</label>
??????????????????????? <value>AL</value>
??????????? </item>
??????????? <item>
??????????????????????? <label>Alaska</label>
??????????????????????? <value>AK</value>
??????????? </item>
??????????? <item>
??????????????????????? <label>Arizona</label>
??????????????????????? <value>AZ</value>
??????????? </item>
………………………………….
…………………………………..
</choices>
Conclusion: The advantage of this code that you do not need any kind of standard database (Access, SQL database, etc.). Make these four simple to update files on your server, or fill in the XML script with your passwords (customers) and run the html. Now, from the server (eg call with http://localhost/path ..). Its not work, right? You see all the complexity in terms of standard database connection in the server-side scripting is not required. In many cases this simple script to setup your load and external databases and SQL programming to remove in your script.
Happy simpler coding!
Manzur Ashraf
www.sacars.com.au
Posted in: javascript tutorial| Tags: Database XML Script ajax Control technique text user ajax-based login