When working with arrays in Javascript one of the most common programming is organizing it. Often the data are entered and need to sort them in order to facilitate the implementation of this type of function two methods are widely used and we know them now.


With this method it has to invert the position of an array, the latter elements become the first example as shown below:

<SCRIPT LANGUAGE=”JavaScript” TYPE=”text/javascript”>
var vet = Array (1, 2, 3, 4, 5);
document.write (“Normal array: ” + vetor);
document.write (” and Inverted array: ” + vetor.reverse());

What will be printed on the screen will be “Normal array: 1,2,3,4,5 and Inverted Array: 5,4,3,2,1”.


This method is responsible for ordering an array in alphabetical order. Informing the variable with the data automatically it is ordered, check the example:

<SCRIPT=”JavaScript” TYPE=”text/javascript”>
var vetor = Array (“Blue”, “Yellow”, “Red”, “Black”);
document.write (vetor.sort());

The result on the screen is “Black, Blue, Red, Yellow.”

For this type of organization the SORT method works very well, the problems start when you need to order a numeric array in increasing or decreasing. To perform this action you need to implement two other complementary methods that will help you identify the method SORT which will come first position in the array.

<SCRIPT LANGUAGE=”JavaScript” TYPE=”text/javascript”>
function cres (pr1, pr2){
return pr1 – pr2;

function decr (pr1, pr2){
return pr2 – pr1;

var vetOr = Array (12, 1, 10, 20);
var vetCres = vetOr;
var vetDecr = vetOr;
document.write (“Vector Ascending: “);
document.write (vetCres.sort(cres));
document.write (“<BR>Vector Descending: “);
document.write (vetDecr.sort(decr));

Using the methods and growing decr sort method able to sort numbers and thus have the result of this implementation, as follows:

Vector Ascending Order: 1,10,12,20

Vector Descending: 20,12,10,1

The organization of arrays is widely used in everyday life of a web developer as well as other features of the language, so to understand the function of each is essential.

Want to test this and other code in Javascript? So now download our web development tool and learn not only that, but over all the resources we provide to make your day to day as a programmer much easier. Do not waste time and download now the free version of Scriptcase and enjoy!]

I hope you enjoyed these tips. Follow our blog and stay on top of all the news.

By ,

August 16, 2013


You might also like…

“We have developed the Connected Citizen Card, which assists public administrators in decision-making and policy creation.”(Assist Soluções em TI)

Check below how Assist Soluções em TI used Scriptcase to modernize and streamline the development...

AI-Driven Software Development: The Role of ChatGPT

In the rapidly evolving world of technology, artificial intelligence (AI) is playing an increasingl...

Low-Code: The Key to Accessible Digital Transformation

Digital transformation is imperative for companies wishing to remain competitive in the current era...

You might also like…

Get new posts, resources, offers and more each week.

We will use the information you provide to update you about our Newsletter and Special Offers. You can unsubscribe any time you want by clinck in a link in the footer of any email you receive from us, or by contacting us at sales@scriptcase.net. Learn more about our Privacy Police.