implement apis

server-side/src/apis.js

@@ -0,0 +1,28 @@
+const express = require('express');
+const bodyParser = require('body-parser');
+
+var app = express();
+
+// parse body formatted in JSON
+app.use(bodyParser.json());
+
+app.get('/', (req, res) => {
+    res.send('Hello Express');
+});
+
+app.get('/welcome', (req, res) => {
+    res.send('Welcome to FintechSG');
+});
+
+app.get('/squared', (req, res) => {
+    // JSON format
+    // { "number": 2}
+    number = req.body.number;
+    squared = number * number;
+
+    res.send(`Squared : ${squared}`);
+
+    // from POSTMAN.. set Body raw content as JSON data
+    // { "number": 3 }
+});
+app.listen(process.env.PORT || 3000);