Javscript placeholder script to get and set data with arguments

data_placeholder.js

function set(path, data) {
    Data.set(path, data);
    return "";
}

function increment(path) {
    var amt = Data.exists(path) ? Data.get(path) : 0;
    amt++;
    Data.set(path, amt);
    return "";
}

function decrement(path) {
    var amt = Data.exists(path) ? Data.get(path) : 0;
    if (amt > 0) {
        amt--;
    }
    Data.set(path, amt);
    return "";
}

function getString(path)  {
    return Data.exists(path) ? Data.get(path) : "";
}

function getInt(path) {
    return Data.exists(path) ? Data.get(path) : 0;
}

function runPlaceholder() {
    if (args.length == 0) {
        return "No args specified";
    } else if (args.length == 1) {
        if (args[0].equals("get")) {
            return "get,<path>";
        }
        if (args[0].equals("getint")) {
            return "getint,<path>";
        }
        if (args[0].equals("increment")) {
            return "increment,<path>";
        }
        if (args[0].equals("decrement")) {
            return "decrement,<path>";
        }
        if (args[0].equals("set")) {
            return "set,<path>,<value>";
        }
    } else if (args.length == 2) {
        if (args[0].equals("get")) {
            return getString(args[1]);
        }
        if (args[0].equals("getint")) {
            return getInt(args[1]);
        }
        if (args[0].equals("increment")) {
            return increment(args[1])
        }
        if (args[0].equals("decrement")) {
            return decrement(args[1]);
        }
        if (args[0].equals("set")) {
            return "set,<path>,<value>";
        }
    } else if (args.length == 3) {
        if (args[0].equals("set")) {
            return set(args[1], args[2]);
        }
    }
    return "Incorrect placeholder argument usage!";
}

runPlaceholder();