array cut into pieces code example

Example 1: react split array into chunks

const chunkSize = 10;
const arr = [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17];
const groups = arr.map((e, i) => { 
     return i % chunkSize === 0 ? arr.slice(i, i + chunkSize) : null; 
}).filter(e => { return e; });
console.log({arr, groups})

Example 2: split array into chunks javascript

Array.prototype.chunk = function(size) {
    let result = [];
    
    while(this.length) {
        result.push(this.splice(0, size));
    }
        
    return result;
}

const arr = [1, 2, 3, 4, 5, 6, 7, 8, 9];
console.log(arr.chunk(2));