ADeepDiveintoPromisesAtthispoint,letsquicklydiveintothepowerfulconceptthatarepromises.PromisesinAngularJSarebasedonKrisKowalsQproposal,whichisastandardized,convenientwayofdealingwithasynchronouscallsinJavaScript.ThetraditionalwaytodealwithasynchronouscallsinJavaScripthasbeenwithcallbacks.Saywehadtomakethreecallstotheserver,oneaftertheother,tosetupourapplication.Withcallbacks,thecodemightlooksomething