I writirng server in Express to posibility GET and POST. In Insomnia I get and post valid data.
This is code my REST.
const express = require('express');
const app = express();
const port = 3000;
var cors = require('cors');
app.use(express.json())
app.use(express.urlencoded({extended: true}))
app.use(cors());
app.use(express.json());
app.use(express.urlencoded({extended: true}));
let myValue = 1;
app.listen(port, () => {
console.log(`Server running on port ${port}`);
});
//GET
app.get('/get', (req, res) => {
return res.json({"wartosc": myValue})
});
//POST
app.post('/post', function (req, res) {
myValue = req.body.value;
console.log(req.body)
return res.json({"wartosc": myValue});
});Then I creaeted page with two input will be used to call the GET and POST methods of our REST server.
async function getMethod() {
let inputValue = document.getElementById("inputValue").value;
const responseGet = await fetch('http://localhost:3000/get');
const myJsonGet = await responseGet.json();
//console.log(JSON.stringify(myJsonGet));
document.getElementById("inputValue").value = myJsonGet.wartosc;
}
async function postMethod(){
let inputValue = document.getElementById("inputValue").value;
let responsePost = await fetch('http://localhost:3000/post', {
method: 'POST',
body: {'value' : JSON.stringify(inputValue)}
});
}<!DOCTYPE html><html lang="en"><head><meta charset="UTF-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta http-equiv="X-UA-Compatible" content="ie=edge"><title>Document</title></head><body><input type="text" id="inputValue"><button onclick="getMethod()"> GET</button><button onclick="postMethod()">POST</button><script src="script.js"></script></body></html>When I do get , I get the correct value, but when I change the value and send a post, the server prints undefined.
I don't know why, will you try to help me?