1 8 8 true undefined
   2 [object ArrayBuffer] [object ArrayBuffer] [object Int8Array]
   3 0 8 8 1
   4 0 8 8 1
   5 0 8 8 1
   6 0 8 4 2
   7 0 8 4 2
   8 0 8 2 4
   9 0 8 2 4
  10 0 8 2 4
  11 0 8 1 8
  12 7071727374-807677 7071727374807677
  13 727374-807677 2 6
  14 72737480 2 4
  15 71727374 1 4
  16 717273748076
  17 7071727374807677 1886483059 1954575991
  18 70717273-1020305 1886483059 -16909061
  19 70717273fefdfcfb 1886483059 4278058235
  20 40490fdafefdfcfb 2
  21 400921fb4d12d84a 1
  22 400921fb4d12d84a 1074340347 1293080650
  23 00000000400921fb4d12d84a
  24 400921fb4d12-27b6 400921fb4d12d84a
  25 00-100804d12-27b6 ffff00804d12d84a
  26 0 1 2 3 4 5 6 7
  27 0102030405060708
  28 subarray(2,4)=0304 subarray(-6,-4)=0304
  29 010203040506
  30 03040506 0405
  31 0102030405060708090a0b0c0d0e0f10
  32 slice(4,8)=05060708 slice(-8,-4)=090a0b0c
  33 0102030405060708090a0b0c
  34 060708090a0b