What is a callback function?

1.	What is a callback function?
Answer» A CALLBACK function is a function that is SUPPLIED as an INPUT to another function and then invoked inside the outer function to FINISH a ROUTINE or operation. Here is an example: function greeting(name) { alert('Hello ' + name);}function processUserInput(callback) { var name = prompt('Enter the name here.'); callback(name);}processUserInput(greeting);

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