Single Page App is a web application (i.e., from a technical point of view, a website), in which navigation consists in asynchronously loading individual elements (e.g. sections or entire views) and not reloading individual subpages.

It is best to show all this with a live example. When you are viewing a standard page, clicking on a link leaves the current page and loads a whole new subpage. At this point, we may experience such a „flash” in the browser. It is short if the website is well optimized and we have a good internet connection. Well, but this blink is almost always, if not noticeable, at least perceptible:

The Single Page Application page also has links, exactly the same as the standard page. Only the mechanism responsible for asynchronous transitions to individual subpages blocks the browser’s default behavior (i.e. leaving the current page and reloading the entire new subpage).

Advantages of Single-Page Application

• fast operation
• better user experience thanks to smooth transitions
• less server load
• less load on the client device
• similar cost to creating a conventional website

Tools for creating SPA pages

AJAX – the number one technology for creating Single Page Apps. The old proven way to send data asynchronously between the server and the browser.

Vanilla JS – of course, nothing can replace pure JavaScript. Such applications will be well optimized and constantly ready for development.

jQuery – a proven library for accelerating the writing of JavaScript code

AngularJS – a framework that facilitates data-binding. Developed by Google. Although the previous version of Angular was not a success, Angular is doing well and should be used more and more.