forms - Bootstrap 4 Built-in validator

i made simple form using bootstrap 4. thought built-in validator in bs4 usefull.

i made simple email form field:

<label for="email">e-mail cím:</label><br> <input type="email" name="email" class="inputtext"><br>

my problem that, when type false adress, comes english text. want make hungarian site.

do have idea can change text? googled hour , haven't found anything.

thanks gergo

to set custom message validator error input, use

 <input type="email"     oninvalid="setcustomvalidity('invalid email!')"     onchange="try{setcustomvalidity('')}catch(e){}" />

there change did not set locale (language) of page.

do adding lang attribute <html> tag, like:

<html lang="hu">   ... </html>

Trigger