DatePicker: Getting NaN.NaN.NaN when using with Form validation and dateFormat set

[mana-ma]

Describe the bug

When using the DatePicker with the form validation and setting the dateFormat on the Datepicker to dateFormat="dd.mm.yy" you get a NaN.NaN.NaN prefill.

Anyone got a fix?

Pull Request Link

No response

Reason for not contributing a PR

• Lack of time
• Unsure how to implement the fix/feature
• Difficulty understanding the codebase
• Other

Other Reason

No response

Reproducer

https://stackblitz.com/edit/4bhyxsr3?file=src%2FApp.vue

Environment

Stackblitz?

Vue version

4.x.x

PrimeVue version

4.x.x

Node version

No response

Browser(s)

No response

Steps to reproduce the behavior

1. Fork DatePicker Form Example in docs
2. Add dateFormat="dd.mm.yy" to Datepicker

Expected behavior

Placeholder value gets displayed

[J-Michalek]

@mana-ma Hello, the DatePicker component does not accept a string as its value - changing the initial value to Date, undefined or null should resolve your issue.

The complete type for the value is: Date | Array<Date> | Array<Date | null> | undefined | null

[mana-ma]

@J-Michalek thank you. It worked with setting the initial value to null.