数组合并的小知识之...操作符

…操作符可以将一个数组转为用逗号分隔的参数序列。

array1 = [{1},{2},{3},{4}]
array2 = [{5},{6},{7},{8}]
//有...操作符
array1.push(...array2);
array1 = [{1},{2},{3},{4},{5},{6},{7},{8}]
//没有...操作符
array1.push(array2);
array1 = [{1},{2},{3},{4},[{5},{6},{7},{8}]]