Need help to a field input validation

[rivduan]

First ot all, what a great experience is to know Bubble!
I have 5 years working on Shopify, Wordpress and lately on PHP, so know this is a great thing to me.

I am building an aplication that need to validate a text(number) field before submit The validation is for an IMEI number, that client get from dialing *#06# on his phone.

In order to go to next step, the input should have a valid imei number, if is not valid, can not go to next step.

On php i do this with Luhn algorithm using a function.

How can i do this on bubble?

If someone can help me to right direction really appreciate it

[mani2726]

You can convert PHP into Pure Javascript code to validate the IMEI number.

Luhn algorithm - GeeksforGeeks

[rivduan]

Thank you for your advice. i realize that i can use toobox to add javascript to the form.
Now im struggling with How can i make the workflow to validate imei number to show error or good before next step.

Sorry to bother, any idea?

[mani2726]

yes, you can.

It can work on serverside action too.

Sample app : Your Bubble app

this is basic validating with email address in the input and showing error/success alert.