Check if a list item exists in SharePoint using javaScript

Question

I want to check if item exist in list before i update . If it exist in the sharePoint List don`t update but else it don`t exist in Sharepoint List update the Sharepoint List. I am using API Jquery/Javascript ( _api/web/list ) Any Javascript example i can use. we be appriciented . Thanks

Rajkiran Swain · Answer

https://stackoverflow.com/questions/33047426/how-can-i-determine-if-a-sharepoint-listitem-exists-based-on-a-couple-of-known-v https://sharepoint.stackexchange.com/questions/159118/how-to-check-if-a-list-item-exists-or-not-in-sharepoint-2013-using-javascript

Manpreet Singh · Answer

You can use a unique field to check if the item is already present on the list or not. Cheers Manpreet [Microsoft MVP]