A “higher-order function” is a function that accepts functions as parameters and/or returns a function.

​

    Array Method . reduce() The . ...

    Array Method . forEach() The . ...

    Array Method .filter() The . filter() method executes a callback function on each element in an array. ...

    Array Method .map()

A “higher-order function” is a function that accepts functions as parameters and/or returns a function.

​

    Array Method .reduce() 

    Array Method .forEach() 

    Array Method .filter() 

    Array Method .map()

//higher order function is just a function that take other function as a parameter

//example forEach

​

function repeater(fn){

fn(); fn(); fn();

}

​

function sayHello(){

console.log("Hello There!")

}

repeater(sayHello);//at console Hello There 3 times._

//repeater is higher order function that take sayHello as function parameter.

​

A “higher-order function” is a function that accepts functions as parameters and/or returns a function.

​

    Array Method .reduce() 

    Array Method .forEach() 

    Array Method .filter() 

    Array Method .map()

A “higher-order function” is a function that accepts functions as parameters and/or returns a function.

​

    Array Method . reduce() The . ...

    Array Method . forEach() The . ...

    Array Method .filter() The . filter() method executes a callback function on each element in an array. ...

    Array Method .map()

A “higher-order function” is a function that accepts functions as parameters and/or returns a function.

​

    Array Method .reduce() 

    Array Method .forEach() 

    Array Method .filter() 

    Array Method .map()

A “higher-order function” is a function that accepts functions as parameters and/or returns a function.

​

    Array Method .reduce() 

    Array Method .forEach() 

    Array Method .filter() 

    Array Method .map()

A “higher-order function” is a function that accepts functions as parameters and/or returns a function.

​

    Array Method .reduce() 

    Array Method .forEach() 

    Array Method .filter() 

    Array Method .map()

function copyArrayAndManipulate(array, instructions) {

  const output = []

  for(let i = 0; i < array.length; i++) {

    output.push(instructions(array[i]))

  }

  return output

}

​

function multiplyBy10(input) {

  return input * 10

}

​

copyArrayAndManipulate([1, 2, 3], multiplyBy10)

A “higher-order function” is a function that accepts functions as parameters and/or returns a function.

​

    Array Method .reduce() 

    Array Method .forEach() 

    Array Method .filter() 

    Array Method .map()

A “higher-order function” is a function that accepts functions as parameters and/or returns a function.

​

    Array Method . reduce() The . ...

    Array Method . forEach() The . ...

    Array Method .filter() The . filter() method executes a callback function on each element in an array. ...

    Array Method .map()