JavaScript Program to Pass a Function as Parameter

In this example, you will learn to write a JavaScript program that will pass a function as a parameter.

To understand this example, you should have the knowledge of the following JavaScript programming topics:


Example: Function as Parameter

// program to pass a function as a parameter

function greet() {
    return 'Hello';
}

// passing function greet() as a parameter
function name(user, func)
{

    // accessing passed function
    co message = func();

    console.log(`${message} ${user}`);
}

name('John', greet);
name('Jack', greet);
name('Sara', greet);

Output

Hello John
Hello Jack
Hello Sara

In the above program, there are two functions: name() and greet().

  • The name() function takes two parameters.
  • The greet() function is passed as an argument to the name() function.