How to create 2D array in js without looping?
Wanna get something like this:
[
[number, number, number],
[number, number, number],
[number, number, number],
]
-
What is your intended output?Mitya– Mitya2021-01-12 10:38:05 +00:00Commented Jan 12, 2021 at 10:38
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2 Answers
You can use nested map()
const randomNum = (min, max) => {
return Math.trunc(Math.random() * (max - min)) + min;
}
const createRandom2DArray = (rows, columns) => [...Array(rows)].map(x => [...Array(columns)].map(x => randomNum(1,5)));
console.log(createRandom2DArray(5,5))
Comments
const randomTable = (rows, cols) => Array.from(
{length: rows},
() => Array.from({length: cols}, () => Math.floor(Math.random() * 5))
)
console.table(randomTable(10, 5)) // browser console only, not StackOverflow's
source: stackoverflow
