Customize HTML5 Alert Messages

[mathetos]

The HTML5 alerts are not specific to the field that is missing at all. They can be customized per field. I tested this code and it works great:
http://blog.thomaslebrun.net/2011/11/html-5-how-to-customize-the-error-message-for-a-required-field/#.ViVY_tKrSUl

Considerations

• The JS would have to be localized (meaning wp_localize_script() -- not internationalization) in order to pass the string dynamically
• Not sure there's a reliable way to get_text JS reliably so that local translations can be provided via the local .po file

[ramiy]

I agree, wp_localize_script() is the common way to pass translation strings to JS.

[DevinWalker]

I'm bumping this to 1.7