I need to use a public site to get a registration number. This registration number can be chosen but only if it is not yet in use.

Unfortunately, the site does not provide the availability: I need to make a suggestion in a form and I get the return from the site (ok or in use)

I would like to automate the submission of the form to test for all possibilities (from 10.000 to 99.999).

I use this code

document.getElementById("fieldN20993").value ='99999' ; document.getElementsByName(";check")[0].click();

but the button to submit the form is only visible once the autovalidation has checked the validity of the submission (ie this is a number between 10.000 and 99.999)

what is the best way to automate?

• simulate a tab key to launch the validation and get the submission button
• or force the validation
• or manage to bypass the validation
• or submit without clicking on the button

many thanks in advance Best,