如何将这些JSON对象返回到浏览器而不是控制台

Question

Im receiving and displaying some JSON objects in /hello as seen below:

app.get('/hello' , (req, res) => {
  client
    .search('leather couch')
    .then((listings) => {
      // filtered listings (by price)
      console.log("got here");
      listings.forEach((listing) =>  console.log(listing));

    })
    .catch((err) => {
      console.error(err);
    });
});

instead of console.logging each listing im trying to return these json objects in the browser!

I tried looking it up but can't seem to find the right wording to my question.

Answer 1

You can send a success JSON response like this -

res.json({yourKey : yourValue});

Where res is the response object you receive with request. For more details refer this expressjs doc.

Answer 2

You can use the response object to send to the browser.

There are several ways to that,

• res.send(jsonObject);
• res.json(jsonObject);
• res.status(statusCode).json(jsonObject); Take a look at the api reference .

So your approach can be

app.get('/hello' , (req, res) => {
  client
    .search('leather couch')
    .then((listings) => {
      // filtered listings (by price)
      return res.status(200).json(listing);
    })
    .catch((err) => {
      console.error(err);
    });
});

Here, after grabbing the database result, we send it to the client instead of displaying in the console.

Answer 3

You can use res.send() to return

app.get('/hello' , (req, res) => {
   client
   .search('leather couch')
   .then((listings) => {
       res.send({ list: listings });
   })
   .catch((err) => {
       console.error(err);
   });
});