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[Input Mask Reactive] JS error on loading the page
input-mask-reactive
Reactive icon
Forge asset by Steven Decock
Application Type
Reactive

I'm having a problem with this component on the load of the page. It seems the component stopped working and now I always receive a "Cannot read properties of null (reading 'removeEventListener') "


Screenshot 2026-02-05 172405.png
UserImage.jpg
Gaurav Jain
Solution

Hello Patricia, 

Can you please paste sample java script code where you might be invoking this removeEventListener method.

Otherwise please check this way. It might be possible either name of element is wrong since it is not able to find element itself.

quick way to check this 

const element = document.getElementById('mytrialElement'); 

if (element) { 

 element.removeEventListener('click', myHandlerFunction);

}

2024-10-09 04-44-30
Bhanu Pratap

The component tries to clean up/remove event listeners on an element (input) that isn't found yet (document.getElementById() returns null) — often due to:

  • The Input widget not rendered when OnReady/OnInitialize runs.
  • Widget inside a conditional block/If/Tab that hides it initially.
  • Duplicate/mismatched Ids during navigation/transition.

As suggested by Gaurav above, It should work.

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