first commit

历届学生/韩想/每日课程/2020-08-17/back/br.js

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+const express = require('express')
+const app = express()
+const port = 4000
+
+
+
+app.get('/api/br', (req, res) => {
+    var methods = req.query.callback
+    var dd = {
+        title: '别人的后端',
+    };
+    res.json(dd)
+})
+
+app.listen(port, () => console.log(`Example app listening on port ${port}!`))