Percentage chance of saying something?

Question

How do I make it so ..

• 80% of the time it will say sendMessage(\"hi\");
• 5 % of the time it will say sendMessage(\"bye\");
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Answer 1

Generate a 20% chance to get "Yupiii!" in the cancel.log

const testMyChance = () => {

  const chance = [1, 0, 0, 0, 0].sort(() => Math.random() - 0.5)[0]

  if(chance) console.log("Yupiii!")
  else console.log("Oh my Duck!")
}

testMyChance()