JavaScript-Challenges/array_cardio_day_2.html at master · asifmrony/JavaScript-Challenges · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Array Cardio 💪💪</title>
</head>
<body>
  <p><em>Psst: have a look at the JavaScript Console</em> 💁</p>
  <script>
    // ## Array Cardio Day 2

    const people = [
      { name: 'Wes', year: 1988 },
      { name: 'Kait', year: 1986 },
      { name: 'Irv', year: 1970 },
      { name: 'Lux', year: 2015 }
    ];

    const comments = [
      { text: 'Love this!', id: 523423 },
      { text: 'Super good', id: 823423 },
      { text: 'You are the best', id: 2039842 },
      { text: 'Ramen is my fav food ever', id: 123523 },
      { text: 'Nice Nice Nice!', id: 542328 }
    ];

    // Some and Every Checks
    // Array.prototype.some() // is at least one person 19 or older?
    const isSomeOneNineteen = people.some(person => {
        const date = new Date().getFullYear();
        if((date - person.year) >= 19) return true;
    })
    console.log(isSomeOneNineteen);


    // Array.prototype.every() // is everyone 19 or older?
    const isEveryoneNineteen = people.every(person => (new Date().getFullYear()) - person.year >= 19);
    console.log(isEveryoneNineteen);

    // Array.prototype.find()
    // Find is like filter, but instead returns just the one you are looking for
    // find the comment with the ID of 823423
    const filterId = comments.find((comment) => comment.id === 823423)
    console.log(filterId);

    // Array.prototype.findIndex()
    // Find the comment with this ID
    const index = comments.findIndex(comment => comment.id === 823423);
    // delete the comment with the ID of 823423
    comments.splice(index, 1);
    console.log(comments);

  </script>
</body>
</html>