I'm new to form validation and I have been lucky over the years. I would like to update my method of form creation in my sites. I was curious to know what is standard and if there is a pre-existing solution to my needs? My goal this week is to learn how to validate an email address and check for spam.
I can create forms in HTML5 without issues but I dont know if JavaScript form validation with PHP form validation is standard. I did run across this from my searches and appears to be a good start, but I want to know more and advise.