As an alternative you can also try our non-DTD-based validator.
Visual Studio, when I open the file, validates it against the schema and lists errors perfectly.
This validator checks the markup validity of Web documents in HTML, XHTML, SMIL, Math ML, etc.
If you wish to validate specific content such as RSS/Atom feeds or CSS stylesheets, Mobile OK content, or to find broken links, there are other validators and tools available.
Let’s take a look at how to do that with a text field that is only supposed to have a value of either ‘AAAA’ or ‘BBBB’ (yes, I know that this does not make much sense in a real PDF form).
Javadoc is automatically updated to reflect the latest release at https://javadoc.io/doc/com.googlecode.libphonenumber/libphonenumber/.Google's common Java, C and Java Script library for parsing, formatting, and validating international phone numbers.The Java version is optimized for running on smartphones, and is used by the Android framework since 4.0 (Ice Cream Sandwich).For numeric fields, there is a convenient way to validate a value range, but we want to select to run a custom validation script.After the “Edit” button is clicked, a new window will open that allows us to edit the new script: This script also includes a check for an empty string, so that the user can wipe out a wrong string and start from scratch.