imag.js

var express = require('express')
var app = express();


app.use(express.static('images'))

app.get('/',function(req,res)
{
            res.send(`

              <html>
              <body>

              <form action = '/home' method = get />

              enter age : <input type = "text"  name = "age" >
              <input type = "submit"  value = "submit" >

              </body>
              </html>

                `)


})

app.get('/home',function(req,res)
{

             if(req.query.age <= 25)
             {
                  res.send(`<img src = "boy-128.png" >`)
             }
             else if((req.query.age >=  26) && (req.query.age<50))
             {

                res.send(`<img src = "male3-128.png" >`)

             }
          else if((req.query.age >= 50) && (req.query.age <=100))
             {
               res.send(`<img src = "matureman2-128.png" >`)

             }
             else
              {
                          res.send("invalid age");

             }


})


app.listen(1234,function ()
 {
        console.log("hy");

})