var http = require('http');

var server = http.createServer();

server.on('request', function (req, res) {
    res.end('你好 世界');
});

server.listen(8888, function () {
    console.log('Server is running...');
})

// text/plain 就是普通文本
res.setHeader('Content-Type', 'text/plain; charset=utf-8');