localStorage - example 01/20

index.js

 function updateScore(name, score) {
  
  // GET PREVIOUS SCORE
  let previousScore = JSON.parse(localStorage.getItem("score"));
  if (!previousScore) {
    previousScore = [];
  }

  // UPDATE THE SCORE
  const newScore = { name, score };
  previousScore.push(newScore);

  // SET THE SCORE BACK TO LOCAL STORAGE
  const updatedScoreStr = JSON.stringify(previousScore);
  localStorage.setItem("score", updatedScoreStr);
}

updateScore("bob", 123);