Counting all array elements that match a condition
JavaScript
Read fire tipBuilding objects from nested arrays
JavaScript
If you have key-value-pairs in nested arrays, you can turn them into an object with Object.fromEntries().
const pairs = [
['name', 'Bob'],
['occupation', 'Fry cook'],
['shape', 'rectangular']
]
Object.fromEntries(pairs)
// ⇒ {
// name: 'Bob',
// occupation: 'Fry cook',
// shape: 'rectangular'
// }
More fire tips
Checking if something is an array
We cannot use the typeof operator in JavaScript to check if something is an array or not. Luckily, there is a helper function on the Array prototype for that.
JavaScript
Read fire tipRemoving specific values from an array
JavaScript
Read fire tip