stringToByteArray

tobytearray.js

function stringToByteArray( str ) {

    var codepoint, stack, bytes = [];

    for ( var i = 0; i < str.length; i++ ) {
        codepoint = str.charCodeAt( i );
        stack = [];
        do {
            // Get 8 lowest bits of character g
            stack.unshift( codepoint & 0xff );
        } while ( codepoint >>= 8 );
        bytes = bytes.concat( stack );
    }

    return bytes;
}