把数组按四个一组重新push到一个新的数组

var result = [];
var data = [1, 2, 3, 4, 5, 6, 7, 8, 9,10];
var chunk = 4; //每3个分一组
 
for (var i = 0, j = data.length; i < j; i += chunk) {
    result.push(data.slice(i, i + chunk));
}
 
console.log(result);
console.log('原有数组被分成几组:', result.length);
 
    for (var k = 0; k < result.length; k ++) {
    console.log(result[k]);
}