Regular expression for validating phone number

18-Jan-2018 12:38 by 3 Comments

Regular expression for validating phone number

To start, we create a text field and bring up the properties dialog for the field.

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However, HTML5 brought with it numerous new attributes and features that added the flavor that HTML missed for ages.

One of the questions I get asked again and again is how to validate a field value in an Acro Form with a custom validation script.

Adobe provided a lot of infrastructure to do that with just a simple script.

In that case, the previous value of the field is restored, and the user has to enter the data again.

This is not always desired (for more complicated data, it will probably be much easier to take a look, correct that one typo and continue with the rest of the form), so my preference is actually to mark the field so that the user knows which field needs to be corrected, and have the validation script not report a validation error back to the field: Using this method has implications on the form submission process: The form no longer can verify that the data is correct, so the submission function needs to do another round of validation to see if any of the required fields are not correct (one way to do that is to test all relevant fields to see if the text color is using the error color, or we can use global variables to store the validation state).

As I mentioned before, information is passed to the validation function in the event object, and in the code we see that the member ‘value’ is used to communicate the current value of the field.

The member ‘rc’ (or return code) is used to communicate back if the validation was successful or not.Now, in order to select multiple options, you have to add a size attribute also to the select element.This will make the select box look like a box rather than just the drop down.A user can select only one option from a drop-down list and therefore it resembles just the radio button in its functionality and not the checkboxes, right?Well, this is where the concept of multiple selections in a select box comes into play.From a web designer’s perspective, allowing the user to choose multiple options from a select box is fairly simple and straightforward.