# Creating Custom Events using Javascript **URL:** \ **Category:** APIs & Integrations\ **Tags:** professional\ **Created:** [May 20, 2025, 2:29pm UTC](https://community.hubspot.com/t/creating-custom-events-using-javascript/133047 "2025-05-20T14:29:06Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![NCasey3](https://avatars.discourse-cdn.com/v4/letter/n/71e660/32.png) [@NCasey3](https://community.hubspot.com/u/NCasey3)\ **Post date:** [May 20, 2025, 2:29pm UTC](https://community.hubspot.com/t/creating-custom-events-using-javascript/133047/1 "2025-05-20T14:29:06Z")
Hi, Apologies if this is an obvious question, but when creating a Custom Event in Hubspot using Javascript, do we need to define all property values if we’ve already selected to track default Properties at the ‘Properties’ stage of set-up? Thanks! ---
**Author:** ![kosalaindrasiri](https://d10pqhm3lwygmk.cloudfront.net/user_avatar/community.hubspot.com/kosalaindrasiri/32/44349_2.png) [@kosalaindrasiri](https://community.hubspot.com/u/kosalaindrasiri)\ **Post date:** [May 20, 2025, 5:42pm UTC](https://community.hubspot.com/t/creating-custom-events-using-javascript/133047/2 "2025-05-20T17:42:39Z")
Hi @NCasey3, No, you don’t need to manually define every property in your JS snippet if you’ve selected default properties during setup. Refer: - [How to Create Custom Events](https://knowledge.hubspot.com/reports/create-custom-behavioral-events-with-the-code-wizard) - [Accounts Dashboard | HubSpot](https://developers.hubspot.com/docs/guides/api/analytics-and-events/custom-events/custom-event-definitions) Regards, Kosala ---
**Author:** ![NCasey3](https://avatars.discourse-cdn.com/v4/letter/n/71e660/32.png) [@NCasey3](https://community.hubspot.com/u/NCasey3)\ **Post date:** [May 22, 2025, 8:42am UTC](https://community.hubspot.com/t/creating-custom-events-using-javascript/133047/3 "2025-05-22T08:42:37Z")
Thanks Kosala!