calculator
Js code
const express = require("express");
const app = express();
app.get("/", function(req, res){
res.sendfile(__dirname + "/index.html")
})
app.listen(3000, function(){
console.log("server started at port 3000");
});
index.html
<!DOCTYPE html>
<html lang="en" dir="ltr">
<head>
<meta charset="utf-8">
<title>calculator</title>
<h1>calculator</h1>
</head>
<body>
<form action="index.html" method="post">
<input type="text" name="num1" placeholder="first num">
<input type="text" name="num2" placeholder="second num">
<button type="submit" name="submit">calculate</button>
</form>
</body>
</html>