Dump perl structures to JavaScript code. Example: use Data::JavaScript; $hash = {'string' => 'Joseph', 'array' => [qw(0 1 2 3 4 5 6 7 8 9 a b c d e f)], 'capitals' => {'Sverige' => 'Stockholm', 'Norge' => 'Oslo', 'Danmark' => 'Koebenhavn'}, 'and' => [[0, 0], [0, 1]], 'or' => [[0, 1], [1, 1]], 'xor' => [[0, 1], [1, 0]]}; $hash->{'ref'} = $hash; print scalar(jsdump("facts", $hash, 31.4e-1)); Output: var facts = new Array; facts[0] = new Object; facts[0].xor = new Array; facts[0].xor[0] = new Array; facts[0].xor[0][0] = 0; facts[0].xor[0][1] = 1; facts[0].xor[1] = new Array; facts[0].xor[1][0] = 1; facts[0].xor[1][1] = 0; facts[0].or = new Array; facts[0].or[0] = new Array; facts[0].or[0][0] = 0; facts[0].or[0][1] = 1; facts[0].or[1] = new Array; facts[0].or[1][0] = 1; facts[0].or[1][1] = 1; facts[0].capitals = new Object; facts[0].capitals.Norge = 'Oslo'; facts[0].capitals.Sverige = 'Stockholm'; facts[0].capitals.Danmark = 'Koebenhavn'; facts[0].and = new Array; facts[0].and[0] = new Array; facts[0].and[0][0] = 0; facts[0].and[0][1] = 0; facts[0].and[1] = new Array; facts[0].and[1][0] = 0; facts[0].and[1][1] = 1; facts[0].ref = facts[0]; facts[0].array = new Array; facts[0].array[0] = 0; facts[0].array[1] = 1; facts[0].array[2] = 2; facts[0].array[3] = 3; facts[0].array[4] = 4; facts[0].array[5] = 5; facts[0].array[6] = 6; facts[0].array[7] = 7; facts[0].array[8] = 8; facts[0].array[9] = 9; facts[0].array[10] = 'a'; facts[0].array[11] = 'b'; facts[0].array[12] = 'c'; facts[0].array[13] = 'd'; facts[0].array[14] = 'e'; facts[0].array[15] = 'f'; facts[0].string = 'Joseph'; facts[1] = 3.14;