You'll pass the URL of the view for the query you want to execute, and then pass the key for which you're searching as the key parameter, like this:

var call = "kf6gpe-7";
db.view('stations/byCall/key="' + call + '"', 
  function (error, result) {
    if (result) {
      result.forEach(function (row) {
        console.log(row);
});

In addition to passing the view and key you're looking for, you must pass a callback function that handles the result.

Here, we're searching the byCall view for a call sign of kf6gpe-7. Recall from the last recipe that the view consists of a map of call signs in the call field to records; when we issue the view request with the database's view method, it searches that map for records with keys matching kf6gpe-7, and returns a result...