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index-FINISHED.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>
// ## 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?
// const isAdult = people.some(function(person) {
// const currentYear = (new Date()).getFullYear();
// if(currentYear - person.year >= 19) {
// return true;
// }
// });
const isAdult = people.some(person => ((new Date()).getFullYear()) - person.year >= 19);
console.log({isAdult});
// Array.prototype.every() // is everyone 19?
const allAdults = people.every(person => ((new Date()).getFullYear()) - 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
// delete the comment with the ID of 823423
const index = comments.findIndex(comment => comment.id === 823423);
console.log(index);
// comments.splice(index, 1);
const newComments = [
...comments.slice(0, index),
...comments.slice(index + 1)
];
</script>
</body>
</html>