I have an array of numbers like
[1, 10, 100]
The question is: how can I extract numbers from this array and transform these numbers into new, single-element arrays like
[1], [10], [100]
Thank you.
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4 Answers
You could use a destructuring assignment while mapping the arrays.
var [a, b, c] = [1, 10, 100].map(v => [v]);
console.log(a);
console.log(b);
console.log(c);
Comments
You can use Array#map function to map each item into a separate array. And if you know the count and want to keep them into separate variables, you can use array destructuring.
const singleItemArray = [1, 10, 100].map(item => [item]);
console.log(singleItemArray); // Array of single item arrays
const [first, second, third] = singleItemArray; // Destructuring the array of arrays into single arrays
console.log(`first: ${first}`);
console.log(`second: ${second}`);
console.log(`third: ${third}`);Comments
how can I extract numbers from this array and transform these numbers into new, single-element arrays like
[1],[10],[100]
Simply use map to return the item wrapped in an array and finally return a new array having every item as single item array.
arr.map(s=>[s])
Demo
console.log([1, 10, 100].map(s=>[s]))
Comments
Simple ES5 answer:
oldArray.map(function(item) { return [item]; });;