Scenario You are using Node JS 17 and hitting this error during application start up using npm start command. Error The error ERR_OSSL_EVP_UNSUPPORTED has been mentioned in the release notes for Node.js 17. If you hit an ERR_OSSL_EVP_UNSUPPORTED error in your application with Node.js 17, it’s likely that your application or a module you’re using is attempting to use an…

The example CodeIgniter 4 MySQL AJAX nested comment system will show you how to build a threaded comment system using PHP based web framework CodeIgniter 4, MySQL 8 and jQuery with AJAX technique. This nested comment system is also called hierarchical comment system. This threaded or nested comment system in PHP AJAX accepts reply up to maximum of five level…

Introduction Here in this tutorial I am going to show you how to use AJAX technique using jQuery with Spring Boot application to check user availability instantly without refreshing the web page. I am going to use Thymeleaf template in Spring Boot application. I will use Spring REST to create REST API endpoint which will be called from jQuery code….

Introduction Here I am going to show you how to use AJAX in Django framework and how to upload files using Django jQuery and AJAX. This example can be used to upload both single and multiple files to the server. Only thing is you need to select single file if you want to upload only single file. For multiple files…

In this tutorial I am going to show you how to build CRUD application using CodeIgniter 4, MySQL and React JS framework. CRUD is an acronym that stands for Create, Read, Update and Delete operations in a particular application. So you are basically creating a record, reading single or all records, updating the existing record and deleting the existing record….

In this tutorial I am going to show you how you can build an online visitor tracking system using PHP based framework CodeIgniter 4, MySQL 8 and AJAX technique. The similar system for tracking online visitors on web site, I built in past, using CodeIgniter 3 framework. As a web site owner you would like to the progress to the…

Here I am going to explain how to use AJAX with CodeIgniter 4 and MySQL to check the availability of username on key event. So instead of user waiting at the end of the input form and submitting the form, I am going to let user know immediately whether the username he/she is choosing is available or someone else has…

Here in this tutorial I am going to explain how to integrate Django REST API with Angular framework. CRUD stands for Create, Read, Update and Delete operations which will be performed from UI (User Interface) using Angular framework and on server side Django framework and MySQL server are used. The Angular framework will be used in this example for representing…

I am going to show you an example on Angular CodeIgniter 4 REST API MySQL CRUD. CRUD is an acronym and stands for Create, Read, Update and Delete operations. REST or RESTful is a Representational State Transfer which defines an architectural style in software engineering. The REST API works on HTTP or HTTPS protocol. The Angular framework will be used…

Here I am going to show you how to use AJAX in React HTTP GET request without using Third Party library. To do this I am going to use XMLHttpRequest for fetching data instead of Fetch API (fetch()). AJAX is an acronym that stands for Asynchronous JavaScript and XML. The Fetch API provides an interface to fetch resources from the…