In this table, Element refers to the name of the HTML element for the form field, Type refers to the value of the type attribute for the form field, and Label refers to the text to the left of the form field. Form code updated with name attribute values Now that you have assigned names for the form and form fields, you are ready to start writing the script that handles the validation for the fields. If you are typing the Java Script code in this article manually and receive errors, you should check that all casing is the same as shown in this article.Otherwise, you may want to review JScript Run-Time and Syntax errors.(16 printed pages) Introduction Getting Started Writing the Validation Script Connecting the Form to the Script Associating Form Fields with Custom Script Code Listing Conclusion When you create forms, providing form validation is useful to ensure that your customers enter valid and complete data.For example, you may want to ensure that someone inserts a valid e-mail address into a text box, or perhaps you want to ensure that someone fills in certain fields.
A function can take arguments and can return values.
In order to access your form fields in code, you need to assign names to the form and each of the fields. For more information see, NAME Attribute | name Property.
You may assign any name you want that is composed of alphanumeric characters (without spaces), but to make writing the code easiest, you should provide a useful, friendly name for each of the fields.
The action attribute tells the browser what to do when a user submits the form.
If you want to test this form, change this e-mail address to your own e-mail address.
When referring to Java Script in general, this article uses the generally accepted term "Java Script." However, when referring to documentation on the Microsoft Developer Network (MSDN) Web site, this article uses the term "JScript." Note The previous code specifies an e-mail address for the Action attribute of the form property.