Sierra  Roob

Sierra Roob

1591072140

7 Tips to Handle Undefined in JavaScript

7 Tips to Handle Undefined in JavaScript
When I started to learn JavaScript about eight years ago, I found bizarre that both undefined and null represent empty values.
Most of the modern languages like Ruby, Python or Java have a single null value (nil or null), which seems a reasonable approach.
But JavaScript is different.
The JavaScript interpreter returns undefined when accessing a variable or object property that is not yet initialized.

#javascript #undefined #programming

What is GEEK

Buddha Community

7 Tips to Handle Undefined in JavaScript
Ray  Patel

Ray Patel

1619518440

top 30 Python Tips and Tricks for Beginners

Welcome to my Blog , In this article, you are going to learn the top 10 python tips and tricks.

1) swap two numbers.

2) Reversing a string in Python.

3) Create a single string from all the elements in list.

4) Chaining Of Comparison Operators.

5) Print The File Path Of Imported Modules.

6) Return Multiple Values From Functions.

7) Find The Most Frequent Value In A List.

8) Check The Memory Usage Of An Object.

#python #python hacks tricks #python learning tips #python programming tricks #python tips #python tips and tricks #python tips and tricks advanced #python tips and tricks for beginners #python tips tricks and techniques #python tutorial #tips and tricks in python #tips to learn python #top 30 python tips and tricks for beginners

Niraj Kafle

1589255577

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

JavaScript Dev

JavaScript Dev

1610158495

7 Simple JavaScript Tips for Optimizing Your Code

I know you care about optimizing your code but sometimes you don’t know how to do it.

Imagine every piece of your code is well optimized, the performance would be great and you can easily investigate your code if having any issue.

So, without any further ado, let’s dive right into the 7 simple JavaScript tips below.

#programming-tips #javascript #programming #javascript-tips

Sierra  Roob

Sierra Roob

1591072140

7 Tips to Handle Undefined in JavaScript

7 Tips to Handle Undefined in JavaScript
When I started to learn JavaScript about eight years ago, I found bizarre that both undefined and null represent empty values.
Most of the modern languages like Ruby, Python or Java have a single null value (nil or null), which seems a reasonable approach.
But JavaScript is different.
The JavaScript interpreter returns undefined when accessing a variable or object property that is not yet initialized.

#javascript #undefined #programming

Rahul Jangid

1622207074

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!");
</script>

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"); */

</script>

Advantages and Disadvantages of JavaScript

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