How to get a response after submitting a form?

Question

JavaScript

<form class="authenticate" id="reg" action="/register" method="POST">
        <input type="text" name="nickname" id="nickname" value="nickname" onclick="this.value=''">
        <input type="email" name="email" id="email" value="e-mail" onclick="this.value=''">
        <input type="password" name="password" id="pass" value="password" onclick="this.value=''">
        <button type="submit" id="auth">Sign up</button>
      </form>

app.post('/register', (req,res) => {

  const { email,nickname,password } = req.body

  pool.query(`select * from players where nickname = '${nickname}'`, (err,r,f) => {
    if(r != '') res.send(123)
  })

})

Answer 1

To get a response, you need to submit the form not through the action attribute, but with the help of xmlhttprequest. Try submitting the form via fetch, on the form's submit event. Don't forget to call .preventDefault() on the submit event.