Javascript function to split a flat array into a fixed number of columns

ArrayToTable.js

var arrayToTable = function (array, numOfCols) {
        var arrayLength = array.length;
        var rows = [{
            columns: []
        }];
        var rowNum = 0;
        for(var i = 0; i < arrayLength; i++) {
            var rowMod = (i) % numOfCols;
            if(rowMod === 0) {
                rows.push({
                    columns: []
                });
            }
            rows[rowNum].columns.push(array[i]);
 
            if(rowMod === numOfCols - 1) {
                rowNum++;
            }
        }
 
        return rows;
    };