console 有没有小伙伴跟我一样想知道这个对象呢

1     for(key in console){
2         document.write(key + ‘<br/>‘)
3     }

 1 debug
 2 error
 3 info
 4 log
 5 warn
 6 dir
 7 dirxml
 8 table
 9 trace
10 group
11 groupCollapsed
12 groupEnd
13 clear
14 count
15 assert
16 markTimeline
17 profile
18 profileEnd
19 timeline
20 timelineEnd
21 time
22 timeEnd
23 timeStamp
24 context
25 memory