Mongoose find（）没有在console.log中显示我的输出

I am working on a project with node, express, mongo and I am trying to query all my topics out of the db.

我正在使用node,express,mongo开发一个项目,我正在尝试从db中查询我的所有主题。

I believe my code is correct but when I run the app in de browser my console.log does not show my output.

我相信我的代码是正确的,但是当我在浏览器中运行应用程序时,我的console.log不会显示我的输出。

This is my code of my route:

这是我的路线代码:

// show all topics 
router.get('/', function(req, res, next) {

var db = req.db;
console.log('Loggin DB: ' + db);

Topic.find({}).exec(function(err, topics)
{
    if(err)
    {
        return next(err)
        console.log("Logging the error: " + err);
        console.log('There were no topics based on your current location');
     }
     else
     {
        console.log('Whoop whoop we found topics near your location');
        //renders the data on the page
        res.render('index', { topic : topic } );
        console.log("Logging data: " + topic);
        console.log("Logging data title: " + topic.topicTitle);
     }
});
});

2 个解决方案

#1

You are gettin topics

你是个主题

Topic.find({}).exec(function(err, topics)

And then you are using topic (it is not exists)

然后你正在使用主题(它不存在)

res.render('index', { topic : topic } );
    console.log("Logging data: " + topic);
    console.log("Logging data title: " + topic.topicTitle);

#2

You are using console.log on the server side. That will not be shown client side in the browser, but rather in the command prompt/terminal where you are running node js.

您正在服务器端使用console.log。这不会在浏览器中显示客户端,而是在运行节点js的命令提示符/终端中显示。

#1