[JS30] - 7) Array Cardio Day 2
🌞 data
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 }
];
🌞 Problems
🌛 Array.prototype.some()
is at least one person 19 or older?
const answer1 = people.some(person => {
const currentYear = new Date().getFullYear()
return 19 <= (currentYear - person.year)
}
)
console.log(answer1)
🌛 Array.prototype.every()
is everyone 19 or older?
const answer2 = people.every(person => {
const currentYear = new Date().getFullYear()
return 19 <= (currentYear - person.year)
}
)
console.log(answer2)
🌛 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 answer3 = comments.find(comment =>
comment.id === 823423
)
console.log(answer3)
🌛 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
)
comments.splice(1,1)
const answer4 = comments;
console.log(answer4)
other
const newComments = [
...comments.slice(0, index),
...comments.slice(index + 1)
]
console.log(newComments)
Author And Source
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