JavaScript: Pass a JavaScript function as parameter

JavaScript Function: Exercise-28 with Solution

Write a JavaScript program to pass a 'JavaScript function' as parameter.

Sample Solution: -

HTML Code:

<!DOCTYPE html>
  <meta charset="utf-8">
  <title>JavaScript program to pass a JavaScript function as parameter</title>


JavaScript Code:

function addStudent(id, refreshCallback)

function refreshStudentList() {

addStudent(1, refreshStudentList);




Flowchart: JavaScript function: Pass a 'JavaScript function' as parameter

Live Demo:

See the Pen JavaScript - Pass a JavaScript function as parameter-function-ex- 28 by w3resource (@w3resource) on CodePen.

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JavaScript: Tips of the Day

Shorten an array using its length property

A great way of shortening an array is by redefining its length property.

let array = [0, 1, 2, 3, 4, 5, 6, 6, 8, 9]
array.length = 4
// Result: [0, 1, 2, 3]

Important to know though is that this is a destructive way of changing the array. This means you lose all the other values that used to be in the array.

Ref: https://bit.ly/2LBj213