How to check for empty fields and return to the form with entered data

I'm using EJS for templating in my Node project. I have built a form with over 30 fields. On submit I check for empty and required form fields and return to the form if found empty. I want to save other form fields data entered by the user, so they will not have to re-enter everything from the start. This is what my code looks like and I didn't add all the field names here to save time reading it.

const register = (req, res) => {      const firstname = req.body.firstname;      const lastname = req.body.lastname;      const fullname = req.body.fullname;      const nic = req.body.nic;      const gender = req.body.gender;      const dob = req.body.dob;      const age = req.body.age;      if (!firstname || !lastname || !nic) return res.redirect('/users/register');  }  

I'm very new in coding and stackoverflow, so please help me solving this. Many thanks in advance.... Excuse me for my not good enough english

https://stackoverflow.com/questions/66913317/how-to-check-for-empty-fields-and-return-to-the-form-with-entered-data April 02, 2021 at 09:08AM