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JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.

At JotForm, we want to make sure that you’re getting the online form builder help that you need. Our friendly customer support team is available 24/7.

We believe that if one user has a question, there could be more users who may have the same question. This is why many of our support forum threads are public and available to be searched and viewed. If you’d like help immediately, feel free to search for a similar question, or submit your question or concern.

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    Input mask function does not support mask Double Byte Character

    Asked by Alen_Lin on April 02, 2016 at 01:55 AM

    Hi Sir,

    I try to use the Input mask function to mask Double Byte Character but doesn't work.

    Can you help to fix it?

    Double Byte Character example:


    Input mask set ****@

    Expect display like below


    But by my test the Chinese character can't display normally.




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    JotForm Support

    Answered by Chriistian on April 02, 2016 at 05:31 AM

    I was able to replicate the issue you are reporting. I was not able to input double byte characters (中文字遮罩測試).


    I will have to escalate the issue to our development team. We will inform you on this thread any updates on the issue.



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    JotForm Support

    Answered by NeilVicente on April 26, 2016 at 10:33 AM


    This problem should be fixed by now.

    Kind regards,