Miguel Yandu

Miguel Yandu


Understanding Recursion in JavaScript

One of the many things that JavaScript has going for it is the ability to recursively call functions. This feature is used to provide important functionality that the language would have to work very hard to compensate for if it were not available.

What is recursion?

Unfortunately, as with most Technical concepts, if you were to simply Google “recursion” you might find the definition a little hard to understand:

Recursion — relating to or involving a program or routine of which a part requires the application of the whole, so that its explicit interpretation requires in general many successive executions.”

If the above worries you, fret not, because the concept is nowhere near as complex as what the incredibly exaggerated wording would have you believe.

Recursion in JavaScript is, simply put, the ability to call a function from within itself.

Still not making sense? That’s perfectly okay. It will. Let’s go through some examples of recursion starting from the simplest form.

#javascript #web-development

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Understanding Recursion in JavaScript
Abigale  Yundt

Abigale Yundt


While You Don't Understand Recursion, Read Recursion: by Randy Taylor

Recursion is the one idea I constantly use while I solve coding problems. Most of the time I don’t start by thinking “RECURSION WILL SOLVE THIS!”. However recursion just ends up being the logical way to reach an answer. In my professional opinion recursion is the purest form of coding; write a function that will call itself until you get what you want! To implement recursion we will create a helper algorithm. 1) Identify what the smallest input is. 2) Continually break down a larger input into smaller inputs and pass those smaller inputs back into itself until you get the desired answer. 3) Define a “base case” that will stop the Recursion should the answer not be found.

Let’s look at the idea of Recursion first. We are writing code that will execute itself until we get a desired answer or reach a base case. Essentially we are creating a loop. I will illustrate this with pseudo code:

for (let recursion =()=>{ …answer? answer = true : false} ; answer === false; recursion())

Much like a traditional for loop the above pseudo code will continue while the second condition is true; the recursion will continue until answer === true. At this point the second statement of the for loop is false terminating the loop. Above if answer === false recursion will call itself again. This is the general idea of recursion. This is why creating a base case is essential to prevent an infinite loop. The “answer” we are looking for might not be present causing recursion to run until the sun burns out.

#algorithms #javascript #recursion #tutorial-for-beginners #iteration #recursion-explained #what-is-recursion #programming

Niraj Kafle


The essential JavaScript concepts that you should understand

As a JavaScript developer of any level, you need to understand its foundational concepts and some of the new ideas that help us developing code. In this article, we are going to review 16 basic concepts. So without further ado, let’s get to it.

#javascript-interview #javascript-development #javascript-fundamental #javascript #javascript-tips

Rahul Jangid


What is JavaScript - Stackfindover - Blog

Who invented JavaScript, how it works, as we have given information about Programming language in our previous article ( What is PHP ), but today we will talk about what is JavaScript, why JavaScript is used The Answers to all such questions and much other information about JavaScript, you are going to get here today. Hope this information will work for you.

Who invented JavaScript?

JavaScript language was invented by Brendan Eich in 1995. JavaScript is inspired by Java Programming Language. The first name of JavaScript was Mocha which was named by Marc Andreessen, Marc Andreessen is the founder of Netscape and in the same year Mocha was renamed LiveScript, and later in December 1995, it was renamed JavaScript which is still in trend.

What is JavaScript?

JavaScript is a client-side scripting language used with HTML (Hypertext Markup Language). JavaScript is an Interpreted / Oriented language called JS in programming language JavaScript code can be run on any normal web browser. To run the code of JavaScript, we have to enable JavaScript of Web Browser. But some web browsers already have JavaScript enabled.

Today almost all websites are using it as web technology, mind is that there is maximum scope in JavaScript in the coming time, so if you want to become a programmer, then you can be very beneficial to learn JavaScript.

JavaScript Hello World Program

In JavaScript, ‘document.write‘ is used to represent a string on a browser.

<script type="text/javascript">
	document.write("Hello World!");

How to comment JavaScript code?

  • For single line comment in JavaScript we have to use // (double slashes)
  • For multiple line comments we have to use / * – – * /
<script type="text/javascript">

//single line comment

/* document.write("Hello"); */


Advantages and Disadvantages of JavaScript

#javascript #javascript code #javascript hello world #what is javascript #who invented javascript

Hire Dedicated JavaScript Developers -Hire JavaScript Developers

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Dock  Koelpin

Dock Koelpin


Understanding Recursion by implementing the ‘Tower of Hanoi’ in JavaScript

Recursion is a problem-solving technique, where the solution of a larger problem is defined in terms of smaller instances of itself. You can try to imagine an example in the real world when you’re digging through your home and come across a mysteriously locked suitcase, the key for the suitcase is probably in this other box. This box contains more boxes, with more boxes inside those boxes. The key is in a box somewhere.

How to search for the key?

There are two popular approaches for us to solve this problem.The first approachIn this solution, we use a while-loop algorithm: “while the pile isn’t empty, grab a box, and look through it.”

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#javascript-tips #javascript #recursion #technology #web-development