如何将 JSON 数据从服务器传递到客户端并在 Javascript 中使用数据？

Question

I would like to pass a JSON from server side to client side in Node.js. On the client side I want to use them in Javascript then. What I tried so far:

app.get('/test', function (req, res) {
   let data = {
      "questions":{
         "5-2?":[
             {
               "ans1":"3"
             },
             {
               "ans2":"8"
             },
          ],
          "1+2":[
            {
              "ans1":"3"
            },
            {
              "ans2":"1"
            }
          ]
      }
   };
 res.render('test', { data: data });
});

In my pug file I want to use that data with Javscript like this:

console.log(!{data});

Answer 1

On the server you transmit the data using JSON.stringify() and on the client you receive the serialized JSON representating the data structure that you stringified. To turn this back in to an object that you can use, use JSON.parse()