Top 15 JavaScript Tips and Tricks to Level Up Your Code

The market share of JavaScript has risen to new levels in the last 5–10 years, especially since ES6 was launched in June 2015, making it the most popular programming language for web development, allowing developers to create both front-end UI and back-end logic.

Most of the functions and applications that make the Internet indispensable to modern life are coded in some form of JavaScript. While JavaScript is not the only client-side scripting language on the Internet, it was one of the first and it is still the most widely used. Many developers believe that JavaScript is inefficient and finicky, so they have made many improvements to the language over the years and because of this, every programmer searching for JavaScript Tips and Tricks to level up code.

Convenient and useful techniques to reduce the lines of code and pace up your Dev Work!

In this tutorial, as the best JavaScript development company in USA and India, we will point out a few important JavaScript best practices so you don’t have to learn it the hard way. Get ready to level to your code!

1. DECLARE AND INITIALIZE ARRAYS

We can initialize array of particular size with default values like “”, null or 0. You might have used these for the 1-D array but how about initializing 2-D array/matrix?

2. SORTING ARRAY OF STRING, NUMBERS OR OBJECTS

We have inbuilt methods sort() and reverse() for sorting strings but How about numbers or array of objects?

Let’s check out sorting hacks for Numbers and Objects in Increasing and Decreasing order as well.

3. EASY EXCHANGE VARIABLES

You probably swap the two variables using a third variable temp. But this tip will show you a new way to exchange variables using destructuring.

4. GET A RANDOM ITEM FROM AN ARRAY

5. GET A RANDOM NUMBER IN A SPECIFIC RANGE

This code snippet can be useful when trying to generate fake data for testing purposes, such as a salary between min and max.

6. GENERATE AN ARRAY OF NUMBERS WITH NUMBERS FROM 0 TO MAX

7. FILTER UNIQUE VALUES

The Set object type was introduced in ES6, and along with …, the ‘spread’ operator, we can use it to create a new array with only the unique values.

Before ES6, isolating unique values would involve a lot more code than that!

This trick works for arrays containing primitive types: undefined, null, boolean, string and number . (If you had an array containing objects, functions or additional arrays, you’d need a different approach!)

8. A STRING TRIM FUNCTION

The classic trim function of Java, C#, PHP and many other language that remove whitespace from a string doesn’t exist in JavaScript, so we could add it to the String object.

A native implementation of the trim() function is available in the recent JavaScript engines.

9. APPEND AN ARRAY TO ANOTHER ARRAY

10. REMOVE DUPLICATES

You probably encounter an array with duplicate data and use a loop way to get rid of these duplicates. This tip will help you remove duplicates in an easy way without using any loop.

11. ROUNDING NUMBER TO N DECIMAL PLACE

12. CONVERT DECIMAL TO BINARY OR HEXA

We can use some in-built methods like .toPrecision() or .toFixed() to achieve many functionalities while solving problems.

13. GET THE LAST ITEM(S) IN AN ARRAY

The array method slice() can take negative integers, and if provided it will take values from the end of the array.

14. MAKE ARRAY EMPTY

This quick tip will save the time that you put to empty an array. I will show you the quick method to empty in an array using the JavaScript length method.

15. USING STRING REPLACE FUNCTION TO REPLACE ALL THE VALUES

We specialize in delivering end-to-end software design & development services and have hands-on experience with popular front-end and back-end languages like JavaScript. Our back-end and front-end engineers also help in improving security, reliability, and features to make sure your business application scales and remain secure.

FINAL WORDS

In this article, we shared with you the top 15 tips for improving JavaScript performance. If you go ahead and implement all these changes, you will notice a significant improvement in the speed of your JavaScript web development and applications.

ABOUT NETTYFY TECHNOLOGIES

Nettyfy Technologies specialize in delivering end-to-end software design & development services and have hands-on experience with popular front-end and back-end languages like JavaScript. Our back-end and front-end engineers also help in improving security, reliability, and features to make sure your business application scales and remain secure.

Original Source: http://nettyfy.com/top-15-javascript-tips-and-tricks-to-level-up-your-code/

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Top 10 JavaScript Tips For Beginners To Learn For Better Programming

As a Top JavaScript Development Company in USA and India, we are listing out Top JavaScript Tips For Beginners To Learn For Better Programming. JavaScript is one of the most popular programming languages in the modern world. It is predominately used for web development, particularly the creation of interactive front-end elements, but it also has some other use cases. JavaScript is undoubtedly one of the best programming languages to learn. You pretty much have to learn JavaScript if you want to work in any sort of web development field.

JavaScript. Some amazing features of JavaScript are as follows:

● Lightweight, interpreted language.
● Easily embedded with languages like HTML, CSS, and Java.
● Also works as a client-side scripting language, which helps in creating dynamic web pages.

If you want to become a web developer, you need to start practicing your JavaScript skills as soon as possible. To help you get started, I’ve put together a list of 10 Javascript Tips For Beginners To Learn For Better Programming.

1. How To Check Multiple Conditions?

Normally, we check more than one condition like:

For code fast and better way we check multiple condition using includes() or indexOf():

2. Easy Way To Convert An Object To An Array

3. How To Redirect a Web Page In Js?

The below JavaScript code snippet used to perform http redirect on a given URL.

4. Why Splice() Is Better Than Delete To Remove Element From Array?

Splice() remove element completely from the array.

Delete replace element with empty instead of removing it from Array. Delete should use to remove properties of Object

5. How to convert Number To String And String To Number Without Using Any Function?

With Function

Normally, to convert Number to String, we use toString():

To convert String to Number, we use Number():

Without Function

But to code fast we can convert number to string without function:

To convert String to Number without function:

6. What Is Self-Invoking Function?

While we use a self-invoking function in script we don’t need to call, it runs automatically when page loads or parent function is called.

It’s good practice to use a self-invoking function rather than a normal function.

We just need to wrap functions with parenthesis.

7. How Can We Reduce The Complexity Of A For Loop With Iterators?

To reduce code complexity while we are working with iterators, we can use for…of loop instead of normal for loop.

While we use for .. of loop we don’t need to pay attention to length of built-in iterators like array, object, etc.

8. Which Is The Easy Way To Merge Two Arrays?

To merge two arrays simply use comma operator( , ).

By using this you can insert one array element into another one.

9. How To Easily Truncate Or Empty An Array?

If you know the original length of the array then you can easily truncate the array by re-define it’s length.

You can also use slice() to remove elements, it works even faster.

10. How Can We Find Only Relevant Data From An Array/Object ?

IWe can find mandatory data from an array/object using filter().

Filter() tests each element of the array and returns a new array with the elements which pass the test.

Wrapping-Up

There you go! If you want to start a career as a web developer, building your own JavaScript projects is the best way to learn the language. Working on projects of your own helps you understand how the syntax works and how you can solve different problems with JavaScript.

Original Source: https://nettyfy.com/top-10-javascript-tips-for-beginners-to-learn-for-better-programming/

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