Trouble with binary string in javascript above character code 128 -

Trouble with binary string in javascript above character code 128 -

so i'm trying create , save binary file locally in javascript using library: https://github.com/eligrey/filesaver.js/

it bit tricky because using gamemaker studio, , ways can interact javascript bit limited, here's setup.. other actual filesaver.js github repo, js code this:

var ildablob = new array(); toarray = function(argument0, argument1) { ildablob[argument0] = string.fromcharcode(argument1); homecoming 1; } save = function(argument0) { var blob = new blob(ildablob, {type: "application/octet-stream"}); saveas(blob, argument0); homecoming 1; }

basically, thought first fill array individual bytes using character codes create binary string, made blob , saved. works binary values below 128, not above, because of charset issue.. how can prepare this?

for example, if seek filling array incrementing 0-255, content of resulting binary file, can see after 128 bytes characters create 2 bytes each, not one, , it's wrong:

00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f 10 11 12 13 14 15 16 17 18 19 1a 1b 1c 1d 1e 1f 20 21 22 23 24 25 26 27 28 29 2a 2b 2c 2d 2e 2f 30 31 32 33 34 35 36 37 38 39 3a 3b 3c 3d 3e 3f 40 41 42 43 44 45 46 47 48 49 4a 4b 4c 4d 4e 4f 50 51 52 53 54 55 56 57 58 59 5a 5b 5c 5d 5e 5f 60 61 62 63 64 65 66 67 68 69 6a 6b 6c 6d 6e 6f 70 71 72 73 74 75 76 77 78 79 7a 7b 7c 7d 7e 7f c2 80 c2 81 c2 82 c2 83 c2 84 c2 85 c2 86 c2 87 c2 88 c2 89 c2 8a c2 8b c2 8c c2 8d c2 8e c2 8f c2 90 c2 91 c2 92 c2 93 c2 94 c2 95 c2 96 c2 97 c2 98 c2 99 c2 9a c2 9b c2 9c c2 9d c2 9e c2 9f c2 a0 c2 a1 c2 a2 c2 a3 c2 a4 c2 a5 c2 a6 c2 a7 c2 a8 c2 a9 c2 aa c2 ab c2 ac c2 advertisement c2 ae c2 af c2 b0 c2 b1 c2 b2 c2 b3 c2 b4 c2 b5 c2 b6 c2 b7 c2 b8 c2 b9 c2 ba c2 bb c2 bc c2 bd c2 c2 bf c3 80 c3 81 c3 82 c3 83 c3 84 c3 85 c3 86 c3 87 c3 88 c3 89 c3 8a c3 8b c3 8c c3 8d c3 8e c3 8f c3 90 c3 91 c3 92 c3 93 c3 94 c3 95 c3 96 c3 97 c3 98 c3 99 c3 9a c3 9b c3 9c c3 9d c3 9e c3 9f c3 a0 c3 a1 c3 a2 c3 a3 c3 a4 c3 a5 c3 a6 c3 a7 c3 a8 c3 a9 c3 aa c3 ab c3 ac c3 advertisement c3 ae c3 af c3 b0 c3 b1 c3 b2 c3 b3 c3 b4 c3 b5 c3 b6 c3 b7 c3 b8 c3 b9 c3 ba c3 bb c3 bc c3 bd c3 be

instead of using string, you'd improve off using uint8array (meaning array of unsigned bytes in range 0–255); see https://developer.mozilla.org/en-us/docs/web/javascript/reference/global_objects/uint8array. example:

ildablob[argument0] = new uint8array(1); ildablob[argument0][0] = argument1; ... var blob = new blob(ildablob, {type: "application/octet-stream"});

also, incidentally — argument0 , argument1 terrible variable-names. mention you're constrained gamemaker; reason this? seems there should way prepare that.

javascript character-encoding binary blob