This function allows you to pass in a string, and it will increment it in a URL friendly manner. It can be useful for link shorteners, new chat string identifiers, etc.

incrementUrlFriendlyString.js

function incUrlString(str){
    var singles = str.split('');
    var incNext = false;
    var extendIt = false;
    for(var i = singles.length - 1; i > -1; i --){
        if(incNext || i == singles.length - 1){
            incNext = false;
            var ascii = singles[i].charCodeAt(0);
            if(ascii == 57){
                ascii = 65;
            }else if(ascii == 90){
                ascii = 97;
            }else if(ascii == 122){
                ascii = 48;
                incNext = true;
            }else{
                ascii++;
            }
            if(i == 0 && incNext){
                extendIt = true;
            }
            singles[i] = String.fromCharCode(ascii);
        }
    }
    var newStr = singles.join('');
    if(extendIt == true){
        newStr = 'A' + newStr;
    }
    return newStr;
}