In the Fetching data before switching route recipe, we had to wait a while longer ... device should reset the BY allowing the phone to connect and continue the uodate. ... JS will automatically monitor your Ajax requests, event loop lag, document ... Until the method execution is done the progress bar is updated in the design.. ... is to have a function, such as readFile, start reading a file and return only when the file has been fully read. ... An asynchronous interface allows the script to