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 7372717077768074 1936879984 2004254836
  18 73727170-1020305 1936879984 -16909061
  19 73727170fefdfcfb 1936879984 4278058235
  20 da0f4940fbfcfdfe 2
  21 4ad8124dfb210940 1
  22 4d12d84a400921fb 1293080650 1074340347
  23 000000004ad8124dfb210940
  24 -27b64d1221fb4009 d84a4d1221fb4009
  25 00-1008021fb4009 ffff008021fb4009
  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 070609080b0a