Alert function in Javascript

In this video we are going to see about the alert function in javascript. Alert function in javascript is a simple popup that can be generated with a message. This is a simple function that can be called by using "alert();" in your javascript code.

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by
Vasandkumar

[samu-yxzv]

I want to have an input box where i can enter text or numbers and call that in the alert function. Problem is if i put

alert("id")


it just say my id and doesnt actually call the input. Please help.