Validating your form
So far, we have looked at how to create a form and make use of different form fields offered by Sencha Touch. Different form fields provide different kinds of information a user can enter. Now, some of them may be valid and some may not. It is a common practice to validate the form and the entered values at the time of posting. Now, based on your application architecture, you may choose to apply all kinds of validations in the frontend UI, or you may choose to handle them in the backend server code, or a combination of the two. All are valid approaches. However, for this chapter, we would assume that we want to validate the form on the frontend to make sure that the values entered are valid.
Sencha Touch does not offer a mechanism ...
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