How to link this jscode (Onclick ) to the respective button

General
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How to link this jscode (Onclick) to the respective button

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@divhunter

Def need more information on this one :smiley: What do you mean by “link this jscode”.

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Onclick of a button I have to fetch data from API & display it in UI.

Do that I have to write some js code.

How should I link the Onclick method code to the respective button