if ur not getting spark......... it is ur distributor.....that happened to me all out of the blue like last week.......
try that

 

well all you can do is speculate from here
you got to check the battery voltage and starter amps then go from there to find the problem

also never jump start a car battery
second if its the alternator, fast charge the battery and then crank the car and test alternators voltage and amps

 

Please explain.