calculateArrayAverage(arr: Array<number> | Array<any>, field?: string): number
calculate number array average;
remark
arr element must be number type, not allow string number like '3';
// eg. 1let average = calculateArrayAverage([]);
// now average is `0`;// eg. 2let average = calculateArrayAverage([1, 2, 3, 4, 5]);
// now average is `3`;// eg. 3let average = calculateArrayAverage([1, 2, 3, 4, 5, '6', null, undefined, 'a', [], {}]);
// now average is `3`;
calculate number array average;
arr element must be number type, not allow string number like '3';
// eg. 1 let average = calculateArrayAverage([]); // now average is `0`; // eg. 2 let average = calculateArrayAverage([1, 2, 3, 4, 5]); // now average is `3`; // eg. 3 let average = calculateArrayAverage([1, 2, 3, 4, 5, '6', null, undefined, 'a', [], {}]); // now average is `3`;