Something like this?

/* Creates a uppercase hex number with at least length digits from a given number */

function fixedHex(number, length){

    var str = number.toString(16).toUpperCase();

    while(str.length < length)

        str = 0 + str;

    return str;

}



/* Creates a unicode literal based on the string */    

function unicodeLiteral(str){

    var i;

    var result = ;

    for( i = 0; i < str.length; ++i){

        /* You should probably replace this by an isASCII test */

        if(str.charCodeAt(i) > 126 || str.charCodeAt(i) < 32)

            result += \u + fixedHex(str.charCodeAt(i),4);

        else

            result += str[i];

    }



    return result;

}



var a = [

    [a, 33],  

    [hu016B, 44],

    [su00EF, 51]

];



var i;

for (i=0;i<a.length;i++) {

    document.write(unicodeLiteral(a[i][0]) + <br />);

}

Result

a

hu016B

su00EF

JSFiddle