Really Easy Field validation with Prototype

Standard
Using Titles
No element IDs

Form

Name:

Password:

Confirm Password:

Employee Number:

Department:

Age:

(optional)

Sex:

Male
Female

Donation:

That $ amount does not compute!

(optional)

Sign me up for the email newletter!

Email:

Form

Name:

Employee Number:

Age:

(optional)

Donation:

(optional)

Form

Name:

Employee Number:

Age:

(optional)

Donation:

(optional)

代码整理：模板在线　

来源：http://tetlaw.id.au/view/javascript/really-easy-field-validation