What is Ajax?
Ajax was developed by Microsoft outlook web applications in 1999 but the complete usage of Ajax came into the picture after 6 years. The name Ajax was named by Jesse James Garrett in February 2005. Before the naming of Ajax, it is called an XML HttpRequest scripting object which runs as an MSXML library.
Let us know each and every minute detail about Ajax, its uses, how it works, advantages and disadvantages below
- Understanding Synchronous Vs Asynchronous and getting knowledge of classic web application model
- Learn how Ajax operates with a database
It is mainly used with other applications because it can not be independent software.
How Does It Work?
- By using synchronous methods in web applications, information can be transmitted and received effectively for example when you fill a form and submit it. You will be automatically directed to the new server with that page information.
- XML is used as a format to generate and receive the server data in any format.
- While most of the web browsers are dependent on web server technology, Ajax is independent of web server software.
Where to Use It?
Below mentioned are the places where Ajax is used
Login forms: Eg: user can type their login credentials in the original page form their software will send a request to the server to logged in and the page will be updated as needed.
Auto-complete: When you run a query in the Google search bar with the help of autofill settings suggestions will be shown in drop down below
Rating and Voting: The main content of the site can be decided by the voting in web pages like Digg and Reddit by bookmarking them.
Updating with user content: When a user posts a tweet, it will be added to their feed and everything is updated.
Now Ajax is used by tweeter to run their trending topics page
- Form submission and validation
- It makes web applications quicker and the numbers of responses are also reduced.
- Light-boxes are used nowadays instead of pop-ups
- Using Ajax with flash application
Why is Ajax Used?
Ajax is a web developer’s long term dream because the user can do the following things:
1. Without reloading the page user request can be updated
2. After the page is loaded it generates data from the server.
3. Receive data from the server after the page has loaded.
4. In the background sends data to the server
Examples of Ajax Application
Given below are the lists of web applications that commonly use Ajax
- Google suggests: when a user enters the search query in the Google search bar, auto-complete options will be offered while typing. Suggestions given by Google can be navigated by using operational keys.
- Yahoo maps are easier while operating and user experiences more fun. This Map uses Ajax to drag the entire map with the mouse without using buttons that will be at ease to the user.
- Google maps are general applications that use Ajax. This is a real-time application in which the user can manipulate the data and change the view settings. Ajax directly works on a web browser without any plugin installations. Firstly, only Microsoft internet explorer used Ajax but due to its reliability more web applications like chrome, Mozilla… Etc. using this.
Ajax applications use an intermediate engine that acts as a bridge between browser and server. Ajax is not a programming language.
Advantages and Disadvantages of Ajax
Every software has its pros and cons which when handled in a correct way gives good results
- Reduces the server traffic and increases the speed
- Ajax is responsive and the time taken is also less
- Form validation
- Bandwidth usage can be reduced
- Asynchronous calls can be made this reduces the time for data arrival.
- Active x request is created only in internet explorer and newly created web browser
- For security reason, you can only access information from the web host that serve pages. Fetching information from other servers is not possible with Ajax.
Although Ajax provides new methods and techniques to communicate with a web page as developers and users. The most important thing to remember is that this is about the product or data and how to interact with it and reduce the duration and the number of requests generated but not about technologies. We hope that this article will be of help in learning and using it with ease.
This has been a guide to What is Ajax. Here we have discussed the example, work, use, Advantages, and Disadvantages of Ajax. You can also go through our other suggested articles to learn more –