Node.js 中的类型错误

Question

My problem is that I want to show the content of a .txt file in the browser using JavaScript (specifically Node.js), but when I try to run the code, it shows TypeError: Header name must be a valid HTTP Token ["Content-Type "] . The code is following (I have seen this code in a tutorial):

var http=require('http');
var fs=require('fs');

var server=http.createServer(function(req,res){
    console.log("Request was made" + req.url);
    res.writeHead(200, {'Content-Type ': 'text/plain'});
    var myReadStream=fs.createReadStream(__dirname + '/readMe.txt', 'utf8');
    myReadStream.pipe(res);

    });
    server.listen(3000, '127.0.0.1');
    console.log('Listening to port 3000');

And specifically, it points out the mistake is in this part of the code:

res.writeHead(200, {'Content-Type ': 'text/plain'});

I would like to know what is the problem.

Answer 1

You have an space here:

Just remove the space: 'Content-Type': instead of 'Content-Type ':