MaskedTextBox mask doesn't work correctly with promptChar: "" or " "

[Miroslav]

Hello,

I tried to hide the mask prompt characters. But I got strange results.

If I use empty string as a promptChar

input.kendoMaskedTextBox({ mask: "&", promptChar: "" });

then the mask doesn't work at all.

When I use a space as a promptChar

input.kendoMaskedTextBox({ mask: "&", promptChar: " " });

then the mask enforces the length but not contents - I can enter a space even when I shouldn't be able.

When I use an underscore as a promptChar or use default

input.kendoMaskedTextBox({ mask: "&", promptChar: "_" });
input.kendoMaskedTextBox({ mask: "&" });

then everything works as it should, I can enter only one character but not a space.

 

Is this a feature or a bug? I'm using Kendo UI v2021.1.119.

[Milena]

Hello Miroslav,

 

I would suggest you to use  '\u2000' for promptChar, which is similar to space character, but it will not allow user to enter a space in MaskedTextBox. Please test the updated example and let me know if it meets your requirements.

 

Regards,
Milena
Progress Telerik

[Miroslav]

Milena, thank you for the suggestion to use the "en quad" unicode character. The mask is hidden but still working correctly as I intended it. Perfect.

[Milena]

Hello Miroslav,

I am glad to know that the provided workaround works on your end. Here, you can follow the status of the bug report.

[Patrick | Technical Support Engineer, Senior]

Hi Miroslav,

As a token of gratitude, I have updated your Telerik points for finding the bug, taking the time let us know how to reproduce the issue, and your patience. 

We sincerely appreciate it!  

[Miroslav]

Thank you.

[Patrick | Technical Support Engineer, Senior]

Hi Miroslav,

First, thank you for providing the information regarding the Kendo UI MaskedTextBox and the behavior regarding the promptChar as an empty space or no character.  I can confirm I was able to reproduce the behavior with the latest version of Kendo UI as seen in this Progress Kendo UI Dojo. 

To help further analyze the specific behavior, I will be reaching out to our development team to gain more insight.  When I receive an update, I will reply back within this thread.

Thank you for you patience and understanding.

Regards,
Patrick
Progress Telerik

[Patrick | Technical Support Engineer, Senior]

Just wanted to follow-up with you Miroslav, the Kendo team will still need some additional time.  However, I will update this as soon as I receive word from the development team.  

Thank you again for your patience.

[Miroslav]

OK no problem 🙂