Postman enables you to create and send API requests. Send a request to an endpoint, retrieve data from a data source, or test an API’s functionality.

https://www.postman.com/downloads/

 

A good Web/HTML IDE must have simultaneous code and view split screens

The free ones that in 2021 do are: 

1)  Microsoft Expression Web 4

2) WDL website Builder 4

The next best choice are those that will render the output by changing tab SeaMonkey:

 

And there is Libre office writer 6.x 
in which you can switch the view

 

The weakest is Notepad++ that launches to browser

===========================

 

https://insights.stackoverflow.com/survey/2018

 

2017

 

Web technology for developers

https://www.w3schools.com

https://developer.mozilla.org/en-US/docs/Web

 

HTML

https://www.w3schools.com/tags/att_input_type.asp

 

PHP – AJAX and MySQL

https://www.w3schools.com/php/php_ajax_database.asp

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