Input errors, such as an incorrect email address, will be indicated using the web browser dialogs as in the previous example.attribute allows the use of regular expressions to specify custom formats for the input.In addition to providing instructions, validate user input to help users avoid mistakes.
If your web browser supports HTML5 it will not allow you to submit the form without entering text into the input field.
Instead, it will display a message that is generated by the web browser itself.
HTML5 input types are displayed as simple input fields in older web browsers that do not support these HTML5 features.
The example below shows these HTML5 input types in action.
In general, client-side validation results in a better user experience and makes resolving validation errors more understandable. However, not all web browsers support HTML5, or they may not support your custom validation scripts.
Client-side validation can also be easily bypassed, or the data is changed before reaching the server.For example, telephone numbers are written with different separators and digit groupings.Your form will be easier to use if it can interpret multiple notations. For example, postal codes aren't confined to just numbers in some countries, so using an can easily become a problem for many of your website users.It makes analyzing, reporting and then acting on your data easier when it all conforms to certain formatting.Email addresses, phone numbers, even IP addresses are easy to collect with the proper answer formatting that is built into Survey Gizmo.With a little extra effort, you can create much more complicated validation patterns on your own!