I have this function:
function ungarble(garble){ var s = ""; for( var i = 0; i < garble.length; i++ ) { s += String.fromCharCode(garble[i]); } return s; } It takes in an array of charCodes, then returns a string those charCodes represented.
Does native Javascript have a function that does this?
Note: This is for reading messages returned by child_process.spawn.
fromCharCode already accepts any amount of arguments to convert to a string, so you can simply use apply to give it an array:
var chars = [104, 101, 108, 108, 111, 32, 119, 111, 114, 108, 100]; var str = String.fromCharCode.apply(null, chars); console.log(str);or using ES6 spread syntax
var chars = [104, 101, 108, 108, 111, 32, 119, 111, 114, 108, 100]; var str = String.fromCharCode(...chars); console.log(str);
chars has more than 65536 elements because that's the limit for the number of arguments that can be passed to a function.How about the reduce function?
function ungarble(chars) { return chars.reduce(function(allString, char) { return allString += String.fromCharCode(char); }, ''); } let result = ungarble([65, 66, 67]); console.log(result) // "ABC" 
String.fromCharCode(...garble)