Use of progressive web applications on mobile devices

V nalogi smo predstavili posebnosti progresivnih spletnih aplikacij PSA (Progressive Web Apps – PWA). Podrobno smo raziskali podporne tehnologije, ki omogočajo njihov obstoj, kot sta »spletni manifest« in skripta »storitveni delavec«. Opisali smo življenjski cikel storitvenega delavca in predstavili več dobrih praks predpomnjenja spletnih virov. V nadaljevanju smo s pridobljenim znanjem v celoti načrtovali in implementirali lastno PSA, ki je mobilni nadomestek že obstoječi platformi. Uporabili smo več modernih vmesnikov in podrobno opisali njihovo implementacijo. Nato smo s pomočjo analitičnih podatkov o uporabi, zbranih v realnem okolju, interpretirali uspešnost aplikacije v prvih tednih obstoja. V zaključnem delu smo s komparativno metodo primerjali še delovanje aplikacije v različnih brskalnikih.The thesis describes the Progressive Web Apps (PWA). Supportive technologies like for example the “web manifest” and the script “service worker” were researched in detail. We described the life cycle of the service worker and we presented multiple good methods of caching online sources. In continuation we used the acquired knowledge to completely plan and implement our own PWA, which is a mobile substitute for an existing platform. We used various modern interfaces and we described their implementation in detail. Then we used analytical usage data, which was collected in a real environment so that we could interpret the successfulness of the app in its first weeks of existence. In the concluding part we used the comparative method to analyse the activity of the app in different web browsers