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04-JS30-Array-Cardio-One

HTML, CSS, JS

Array cardio day one for the Javascript 30 course by Wes Bos

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  • index.css
  • index.js
index.html
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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>
    // Get your shorts on - this is an array workout!
    // ## Array Cardio Day 1

    // Some data we can work with

    const inventors = [
      { first: 'Albert', last: 'Einstein', year: 1879, passed: 1955 },
      { first: 'Isaac', last: 'Newton', year: 1643, passed: 1727 },
      { first: 'Galileo', last: 'Galilei', year: 1564, passed: 1642 },
      { first: 'Marie', last: 'Curie', year: 1867, passed: 1934 },
      { first: 'Johannes', last: 'Kepler', year: 1571, passed: 1630 },
      { first: 'Nicolaus', last: 'Copernicus', year: 1473, passed: 1543 },
      { first: 'Max', last: 'Planck', year: 1858, passed: 1947 },
      { first: 'Katherine', last: 'Blodgett', year: 1898, passed: 1979 },
      { first: 'Ada', last: 'Lovelace', year: 1815, passed: 1852 },
      { first: 'Sarah E.', last: 'Goode', year: 1855, passed: 1905 },
      { first: 'Lise', last: 'Meitner', year: 1878, passed: 1968 },
      { first: 'Hanna', last: 'Hammarström', year: 1829, passed: 1909 }
    ];

    const people = ['Beck, Glenn', 'Becker, Carl', 'Beckett, Samuel', 'Beddoes, Mick', 'Beecher, Henry', 'Beethoven, Ludwig', 'Begin, Menachem', 'Belloc, Hilaire', 'Bellow, Saul', 'Benchley, Robert', 'Benenson, Peter', 'Ben-Gurion, David', 'Benjamin, Walter', 'Benn, Tony', 'Bennington, Chester', 'Benson, Leana', 'Bent, Silas', 'Bentsen, Lloyd', 'Berger, Ric', 'Bergman, Ingmar', 'Berio, Luciano', 'Berle, Milton', 'Berlin, Irving', 'Berne, Eric', 'Bernhard, Sandra', 'Berra, Yogi', 'Berry, Halle', 'Berry, Wendell', 'Bethea, Erin', 'Bevan, Aneurin', 'Bevel, Ken', 'Biden, Joseph', 'Bierce, Ambrose', 'Biko, Steve', 'Billings, Josh', 'Biondo, Frank', 'Birrell, Augustine', 'Black, Elk', 'Blair, Robert', 'Blair, Tony', 'Blake, William'];

    // Array.prototype.filter()
    // 1. Filter the list of inventors for those who were born in the 1500's
    const fifteenhundreds = inventors.filter(function(inventor){
      return (inventor.year > 1499 && inventor.year < 1600);
    });
    console.log(fifteenhundreds);

    // Array.prototype.map()
    // 2. Give us an array of the inventors' first and last names
    const names = inventors.map(function(inventor){
      return `${inventor.first} ${inventor.last}`;
    });
    console.log(names);

    // Array.prototype.sort()
    // 3. Sort the inventors by birthdate, oldest to youngest
    const sorted = inventors.sort(function(a, b){
      return a.year - b.year; 
    });
    console.log(sorted);

    // Array.prototype.reduce()
    // 4. How many years did all the inventors live?
    let yearsLived = inventors.reduce(function(accumulator, current, index){
      const inventor = {
        name: `${current.first} ${current.last}`,
        age: current.passed - current.year
      };
      accumulator.push(inventor);
      return accumulator;
    }, []);
    console.log(yearsLived);

    // 5. Sort the inventors by years lived
    yearsLived.sort(function(a, b){
      return b.age - a.age;
    });
    console.log(yearsLived);


    // 6. create a list of Boulevards in Paris that contain 'de' anywhere in the name
    // https://en.wikipedia.org/wiki/Category:Boulevards_in_Paris


    // 7. sort Exercise
    // Sort the people alphabetically by last name
    people.sort(function(a, b){
      return a.localeCompare(b);
    });
    console.log(people);

    // 8. Reduce Exercise
    // Sum up the instances of each of these
    const data = ['car', 'car', 'truck', 'truck', 'bike', 'walk', 'car', 'van', 'bike', 'walk', 'car', 'van', 'car', 'truck' ];
    
    let instances = data.reduce(function(accum, current, index){
      if(accum[current]){
        accum[current] += 1;
      } else {
        accum[current] = 1;
      }
      return accum;
    }, {});
    console.log(instances);

  </script>
</body>
</html>
result
console