我正在尝试在javascript中输出数组的键,如下所示:
data=[8, 4, 6, 9, 5, 2, 4, 6];
for(i in data){console.log(i);}
但是,它不仅输出密钥,还输出以下内容:
0
1
2
3
4
5
6
7
$family
each
clean
associate
link
contains
extend
getLast
getRandom
include
combine
erase
empty
flatten
hexToRgb
rgbToHex
min
max
average
sum
unique
shuffle
为什么?输出数组键后如何让它停止?