MaskedTextBox Custom Rules

[Patrick]

I'm looking to add custom rules to a masked textbox and there is not enough documentation or examples to explain how this works properly.

 

$(this).kendoMaskedTextBox({

    mask: "mm/dd",

rules: {

mm: "any number between 01 - 12",

dd: "any number between 01 - 31"}})

 

I attempted to use a masked date picker, but it still allows for entries like "48/99" which is incorrect.

 

Is it possible to do something like this using custom rules and regex?

 

[Patrick]

I found something... but I feel like there should be something easier:

 

$(this).kendoMaskedTextBox({
    mask: "mM/dD",
    rules: {
        "m": /[0-1]/,
        "M": /[0-9]/,
        "d": /[1-3]/,
        "D": /[0-9]/
    }
})

[Nikolay]

Hello Patrick,

 The MaskedTextBox supports custom rules which allows you to determine whether the current char is valid or not using custom logic. The rules can be defined as a regular expression or a function. This is documented in the following article:

• https://docs.telerik.com/kendo-ui/controls/editors/maskedtextbox/mask-rules#custom-masks

Let me know if you have any questions.

Regards,
Nikolay
Progress Telerik