Pre-routing with querystrings with Express in Node JS

Question

I\'m trying to use express to parse the querystring in case certain parameters are set and execute a little piece of code, before the actual routing is happening. The use-ca

Answer 1

express does not allow you to route based on query strings. You could add some middleware which performs some operation if the relevant parameter is present;

app.use(function (req, res, next) {
    if (req.query.something) {
        // Do something; call next() when done.
    } else {
        next();
    }
});

app.get('/someroute', function (req, res, next) {
    // Assume your query params have been processed
});