18 8 true undefined
2[object ArrayBuffer] [object ArrayBuffer] [object Int8Array]
30 8 8 1
40 8 8 1
50 8 8 1
60 8 4 2
70 8 4 2
80 8 2 4
90 8 2 4
100 8 2 4
110 8 1 8
127071727374-807677 7071727374807677
13727374-807677 2 6
1472737480 2 4
1571727374 1 4
16717273748076
177071727374807677 1886483059 1954575991
1870717273-1020305 1886483059 -16909061
1970717273fefdfcfb 1886483059 4278058235
2040490fdafefdfcfb 2
21400921fb4d12d84a 1
22400921fb4d12d84a 1074340347 1293080650
2300000000400921fb4d12d84a
24400921fb4d12-27b6 400921fb4d12d84a
2500-100804d12-27b6 ffff00804d12d84a
260 1 2 3 4 5 6 7
270102030405060708
28subarray(2,4)=0304 subarray(-6,-4)=0304
29010203040506
3003040506 0405
310102030405060708090a0b0c0d0e0f10
32slice(4,8)=05060708 slice(-8,-4)=090a0b0c
330102030405060708090a0b0c
34060708090a0b
35