Greetings

I am using ECM File List from Content Management Toolkit. In the returned list of documents, I have exposed a DateTime property and using the datePattern to apply the format of datetime "datePattern":"yyyy/MM/dd HH:mm"

Those documents which doesn't have this datetime value set are shown as "NaN" . I believe ECM File List is internally parsing the value to the native Date function before rendering which is causing this.

Can you someone suggest a way to not show "NaN" and just display blank

Thanks

Hello Lakshya,

Which product UI do you see this behaviour in?

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Nanda Pilaka
IBM Content Navigator Support

Original Message:
Sent: Thu December 11, 2025 06:36 AM
From: Lakshya Agarwal
Subject: How to handle null values in ECM File List

Greetings

I am using ECM File List from Content Management Toolkit. In the returned list of documents, I have exposed a DateTime property and using the datePattern to apply the format of datetime "datePattern":"yyyy/MM/dd HH:mm"

Those documents which doesn't have this datetime value set are shown as "NaN" . I believe ECM File List is internally parsing the value to the native Date function before rendering which is causing this.

Can you someone suggest a way to not show "NaN" and just display blank

Thanks

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Lakshya Agarwal
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