Why should you choose Nisa For Ajax Training?

Nisa Trainings is the best online training platform for conducting one-on-one interactive live sessions with a 1:1 student-teacher ratio. You can gain hands-on experience by working on near-real-time projects under the guidance of our experienced faculty. We support you even after the completion of the course and happy to clarify your doubts anytime. Our teaching style at Nisa Trainings is entirely hands-on. You’ll have access to our desktop screen and will be actively conducting hands-on labs on your desktop.

Job Assistance

If you face any problem while working on Ajax Course, then Nisa Trainings is simply a Call/Text/Email away to assist you. We offer Online Job Support for professionals to assist them and to solve their problems in real-time.

The Process we follow for our Online Job Support Service:

• We receive your inquiry for Online Job
• We will arrange a telephone call with our consultant to grasp your complete requirement and the tools you’re
• If our consultant is 100% confident in taking up your requirement and when you are also comfortable with our consultant, we will only agree to provide service. And then you have to make the payment to get the service from
• We will fix the timing for Online Job Support as mutually agreed by you and our consultant.

Course Information

Ajax Training

Duration: 25 Hours

Timings: Weekdays (1-2 Hours per day) [OR] Weekends (2-3 Hours per day)

Training Method: Instructor Led Online One-on-One Live Interactive

Sessions.

COURSE CONTENT :

Module 1: Introduction to Ajax

1.1 What is Ajax?

• Definition of Ajax: Asynchronous JavaScript and XML
• Importance of Ajax in web development
• Traditional vs. Ajax-based web applications
• Benefits of Ajax (Improved user experience, reduced page reloads)

1.2 Key Concepts of Ajax

• Asynchronous communication
• Client-side vs. Server-side
• XMLHttpRequest Object
• Modern alternatives: Fetch API

1.3 How Ajax Works

• Requesting data from the server
• Sending data to the server
• Updating the DOM dynamically

Module 2: Setting Up Ajax

2.1 Setting Up a Basic Ajax Request

• Creating an XMLHttpRequest object
• Opening a request: open()
• Sending a request: send()
• Handling responses with onreadystatechange
• Checking the request status (ReadyState and HTTP Status Codes)

2.2 Making GET Requests

• Using GET to request data
• Retrieving data from the server
• Displaying data on the web page
• Practical Example: Fetching JSON data from an API

2.3 Making POST Requests

• Understanding the POST method
• Sending data to the server
• Sending form data with POST
• Practical Example: Sending JSON or FormData to the server

Module 3: Working with Responses

3.1 Handling Different Types of Responses

• Text response (responseText)
• XML response (responseXML)
• JSON response
• Handling errors in responses

3.2 Parsing and Processing JSON Responses

• Parsing JSON using JSON.parse()
• Handling server responses with structured data
• Updating the UI with JSON data

3.3 Error Handling

• Using onerror for network errors
• Handling non-200 HTTP responses
• Using try/catch blocks for exceptions

Module 4: Advanced Ajax Techniques

4.1 The Fetch API (Modern Approach)

• Introduction to Fetch API
• Fetch vs. XMLHttpRequest
• Making GET and POST requests with Fetch
• Handling responses with Promises
• Working with JSON using fetch()

4.2 Async/Await with Fetch

• Introduction to Async/Await syntax
• Converting promises to async functions
• Handling errors with try/catch
• Practical Example: Making an async Ajax request

4.3 Handling Timeouts and Aborted Requests

• Setting request timeouts
• Aborting a request using AbortController
• Managing request lifecycle

Module 5: Using Ajax with jQuery

5.1 Introduction to jQuery and Ajax

• Why use jQuery for Ajax?
• Overview of $.ajax(), $.get(), and $.post()
• Syntax and configuration options for jQuery Ajax

5.2 Basic GET and POST with jQuery

• Sending GET requests with $.get()
• Sending POST requests with $.post()
• Handling success and error callbacks

5.3 Advanced jQuery Ajax Features

• Using $.ajax() for custom requests
• Setting headers and custom data formats
• Working with JSON and XML responses in jQuery

Module 6: Real-world Ajax Applications

6.1 Fetching and Displaying Dynamic Content

• Creating a dynamic content section that updates without page reloads
• Example: Loading user comments on a blog post dynamically

6.2 Form Validation and Submission with Ajax

• Validating form fields using JavaScript
• Submitting forms using Ajax without reloading the page
• Example: Submitting a contact form with Ajax

6.3 Pagination and Infinite Scroll

• Implementing pagination with Ajax
• Loading more content with infinite scroll
• Practical Example: Building a photo gallery with pagination

Module 7: Advanced Topics in Ajax

7.1 Ajax Caching

• Understanding HTTP caching mechanisms
• How to avoid unnecessary caching in Ajax requests
• Using cache-busting techniques (query strings, headers)

7.2 Cross-Origin Resource Sharing (CORS)

• What is CORS?
• Handling CORS errors in Ajax requests
• Enabling CORS on the server side

7.3 Secure Ajax Requests

• Protecting against Cross-Site Scripting (XSS) attacks
• Handling authentication with Ajax (e.g., JWT)
• Securely sending sensitive data over Ajax

7.4 Error Handling in Complex Applications

• Handling different error types (server errors, network issues, etc.)
• Graceful error reporting and user-friendly messages
• Retrying failed requests with exponential backoff

Module 8: Performance Optimization

8.1 Reducing Network Load

• Techniques to optimize Ajax requests (minimizing requests, caching)
• Lazy loading content
• Debouncing and throttling Ajax calls

8.2 Optimizing DOM Updates

• Minimizing reflows and repaints in the browser
• Efficiently updating the DOM with Ajax responses
• Using virtual DOM for efficient rendering (React.js example)

8.3 Best Practices for Ajax Performance

• Combining multiple Ajax requests
• Using parallel and sequential requests effectively
• Keeping response sizes small (compression, minification)

Module 9: Debugging and Troubleshooting Ajax

9.1 Debugging with Developer Tools

• Using browser developer tools (Network tab, Console)
• Analyzing HTTP requests and responses
• Inspecting JavaScript errors and network issues

9.2 Handling Common Ajax Issues

• Dealing with slow responses and timeouts
• Troubleshooting CORS issues
• Debugging complex error scenarios

Module 10: Final Project

10.1 Building a Complete Ajax-based Application

• Choose a real-world problem (e.g., chat application, dynamic search bar)
• Design the front-end with HTML/CSS
• Implement Ajax for fetching and submitting data
• Integrate server-side technology (e.g., PHP, Node.js) to handle requests
• Implement proper error handling, validation, and performance optimization

10.2 Testing and Deployment

• Testing Ajax requests (unit tests, integration tests)
• Preparing for deployment (minification, security)
• Deployment to a server (e.g., GitHub Pages, Heroku)