How to instantiate class in java script

Hi, I'm new to java script. I have made a class in package project.attendance.model named CheckEmpId. I want to access methods of that class in my java script. Is it possible, if yes than how?
Thanks

Javascript is client side, Java is server side. That fact alone makes it impossible for javascript to invoke your java code.
On the server side you have the ability to dynamically generate javascript however, so maybe you can fix your problem that way depending on what you want to achieve.

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