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| 1 | +<!DOCTYPE html> |
| 2 | +<html lang="en"> |
| 3 | +<head> |
| 4 | + <meta charset="UTF-8"> |
| 5 | + <title>Array Cardio 💪</title> |
| 6 | +</head> |
| 7 | +<body> |
| 8 | + <p><em>Psst: have a look at the JavaScript Console</em> 💁</p> |
| 9 | + <script> |
| 10 | + // Get your shorts on - this is an array workout! |
| 11 | + // ## Array Cardio Day 1 |
| 12 | + |
| 13 | + // Some data we can work with |
| 14 | + |
| 15 | + const inventors = [ |
| 16 | + { first: 'Albert', last: 'Einstein', year: 1879, passed: 1955 }, |
| 17 | + { first: 'Isaac', last: 'Newton', year: 1643, passed: 1727 }, |
| 18 | + { first: 'Galileo', last: 'Galilei', year: 1564, passed: 1642 }, |
| 19 | + { first: 'Marie', last: 'Curie', year: 1867, passed: 1934 }, |
| 20 | + { first: 'Johannes', last: 'Kepler', year: 1571, passed: 1630 }, |
| 21 | + { first: 'Nicolaus', last: 'Copernicus', year: 1473, passed: 1543 }, |
| 22 | + { first: 'Max', last: 'Planck', year: 1858, passed: 1947 }, |
| 23 | + { first: 'Katherine', last: 'Blodgett', year: 1898, passed: 1979 }, |
| 24 | + { first: 'Ada', last: 'Lovelace', year: 1815, passed: 1852 }, |
| 25 | + { first: 'Sarah E.', last: 'Goode', year: 1855, passed: 1905 }, |
| 26 | + { first: 'Lise', last: 'Meitner', year: 1878, passed: 1968 }, |
| 27 | + { first: 'Hanna', last: 'Hammarström', year: 1829, passed: 1909 } |
| 28 | + ]; |
| 29 | + |
| 30 | + 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']; |
| 31 | + |
| 32 | + // Array.prototype.filter() |
| 33 | + // 1. Filter the list of inventors for those who were born in the 1500's |
| 34 | + const filteredInventors = inventors.filter(inventor => inventor.year >= 1500 && inventor.year < 1599); |
| 35 | + console.log('1. filteredInventors', filteredInventors); |
| 36 | + |
| 37 | + // Array.prototype.map() |
| 38 | + // 2. Give us an array of the inventors' first and last names |
| 39 | + const inventorNames = inventors.map(inventor => `${inventor.first} ${inventor.last}`); |
| 40 | + console.log('2. inventorNames', inventorNames); |
| 41 | + |
| 42 | + // Array.prototype.sort() |
| 43 | + // 3. Sort the inventors by birt hdate, oldest to youngest |
| 44 | + const inventorsByBirthdate = inventors.sort((a, b) => a.year > b.year ? 1 : -1); |
| 45 | + console.log('inventorsByBirthdate', inventorsByBirthdate); |
| 46 | + //console.table(inventorsByBirthdate); |
| 47 | + |
| 48 | + //const ordered = inventors.sort((a, b) => a.year > b.year ? 1 : -1); |
| 49 | + //console.table(ordered); |
| 50 | + |
| 51 | + // Array.prototype.reduce() |
| 52 | + // 4. How many years did all the inventors live? |
| 53 | + const yearsLived = inventors.reduce((acc, inventor) => (acc + (inventor.passed - inventor.year)), 0); |
| 54 | + console.log('4. yearsLived', yearsLived); |
| 55 | + |
| 56 | + // 5. Sort the inventors by years lived |
| 57 | + const sortedByYearsLived = inventors.sort((a, b) => (a.passed - a.year) - (b.passed - b.year)); |
| 58 | + console.log('5. sortedByYearsLived', sortedByYearsLived); |
| 59 | + |
| 60 | + // 6. create a list of Boulevards in Paris that contain 'de' anywhere in the name |
| 61 | + // https://en.wikipedia.org/wiki/Category:Boulevards_in_Paris |
| 62 | + /*const categoryGroup = document.querySelectorAll('.mw-category-group ul > li'); |
| 63 | + const filteredCategoryGroup = [...categoryGroup].filter(item => item.textContent.includes(' de ')).map(item => item.textContent); |
| 64 | + console.log('6. categoryGroup', filteredCategoryGroup);*/ |
| 65 | + |
| 66 | + // 7. sort Exercise |
| 67 | + // Sort the people alphabetically by last name |
| 68 | + const sortedNames = people.sort((a, b) => { |
| 69 | + const [aLast, aFirst] = a.split(', '); |
| 70 | + const [bLast, bFirst] = b.split(', '); |
| 71 | + return aLast.toLowerCase() > bLast.toLowerCase() ? 1 : -1; |
| 72 | + }); |
| 73 | + |
| 74 | + console.log('7. sortedNames', sortedNames); |
| 75 | + |
| 76 | + // 8. Reduce Exercise |
| 77 | + // Sum up the instances of each of these |
| 78 | + const data = ['car', 'car', 'truck', 'truck', 'bike', 'walk', 'car', 'van', 'bike', 'walk', 'car', 'van', 'car', 'truck' ]; |
| 79 | + const reduceExercise = |
| 80 | + data.reduce( |
| 81 | + (acc, datum) => ( |
| 82 | + acc[datum] ? {...acc, [datum]: acc[datum] + 1} |
| 83 | + : {...acc, [datum]: 1} |
| 84 | + ), {}); |
| 85 | + console.log('reduceExercise', reduceExercise); |
| 86 | + </script> |
| 87 | +</body> |
| 88 | +</html> |
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