after reading some posts about input type number I tested different browsers and settings with a simple html form.
Conclusion: The validation of the input type number field depends indeed on the browser, i.e. validation rules vary across browsers. While Firefox applies stricter rules than Chrome, and – as far as I read – Safari.
So, how can I add a radio button in the ACF field settings to choose a lang attribute and then set the input field to it?
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