javascript - Get random item for array based on different probabilities? -


okay, imagine i'm creating pokemon game in javascript. have object this...

pokemon = {   "pikachu": {hp: 100, probability: 0.1},   "squirtle": {hp: 90, probability: 0.2} };

i need function select pokemon in object @ random, based on probability. so, in case, functions more select "squirtle" it's probability higher "pikachu".

i loop through pokemon array , add of probabilities. call total

then generate value between 0 , total. call randval

then loop through, adding probabilities again. call secondtotal
first pokemon probability push secondtotal above randval selected pokemon.


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