JavaScript-30/07-Array-Cardio-Day-2/index.html at master · Akshay2996/JavaScript-30 · 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 isAdult = people.some(person => {
        const currentYear = new Date().getFullYear();
        return currentYear - person.year >= 19;
      });
      console.log({ isAdult });

      // Array.prototype.every() // is everyone 19 or older?

      const allAdults = people.every(person => {
        const currentYear = new Date().getFullYear();
        return currentYear - person.year >= 19;
      });
      console.log({ allAdults });

      // 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 comment = comments.find(comment => comment.id === 823423);
      console.log(comment);

      // Array.prototype.findIndex()
      // Find the comment with this ID

      const index = comments.findIndex(comment => comment.id === 823423);
      console.log(index);

      // delete the comment with the ID of 823423

      //comments.splice(index, 1);
      //Another method used in Redux

      const newComments = [
        ...comments.slice(0, index),
        ...comments.slice(index + 1)
      ];
    </script>
  </body>
</html>