In the book, the authors used JavaScripts, included in the texts of HTML files to animate the texts of web pages; illustrate a slide show; illustrate the animated movement of many hearts, the animated movement of three balloons, a TV; demonstrate two answers on two questions; demonstrate the results of the user's answers to the quiz questions; present the work of a simple and scientific calculators; wristwatches; present Mendeleyev's periodic table of chemical elements, with the display of the chemical elements themselves, their numbers, masses, orbital shells, melting and boiling points on the smartphone screen. The Java applets created by the authors allow to revive a splashing river and a lake in a picturesque place in a picture; revive falling snow in the mountains in a picture, accompanied by the ringing of a troika of horses with bells and changing advertising; revive falling snow on a splashing lake in the village in the picture; revive clouds moving across the sky, reflected in a splashing lake; revive a picture of fireworks over buildings with the sound of gunshots, reflected in a splashing lake. All developed Java applets can be used to revive paintings of great artists.