To use the above mentioned error-checking directive with multiple fields, you can separate the field names with commas. Here is a list of other error-checking directives and an explanation of each one of them. If it is not, then the script will notify the user. Age does not contain any letters. All other characters are allowed.
State contains only letters.
When you receive data from your forms, the fields are in the exact same order as they appear in the form. We'll illustrate this with an example. Let's make a field called Email required and have the script verify that it is in the proper email address format.