Dayne Nienow

Dayne Nienow


Removing the First Character from a JavaScript String

Code recipe on removing the first character from a JavaScript string

When you need to remove a character from a string, you can use the substring() method. The substring() method returns a part of the string from the start and end indexes that you specified as its arguments:

String.substring(start, end);

The start index is required by the method, while the end index is optional. When you omit the end index, the method will not cut the string before the end.

When you need to remove only the first character, you can call .substring(1) on your string. Here’s an example:

let str = "hello there";
let res = str.substring(1);
console.log(res); // "ello there"

The res variable above will exclude the first character h from the str variable.

#javascript #programming

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Removing the First Character from a JavaScript String
Lowa Alice

Lowa Alice


JavaScript Strings Tutorial

JavaScript Strings

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How to Remove Whitespace From A String in JavaScript

JavaScript remove whitespace from a string value

When you need to remove all whitespace from a JavaScript string, you can use the trim() method.

Here’s an example of trim() in action:

let str = "  Hello World!  ";
let trimStr = str.trim();

console.log(trimStr); // "Hello World!"

The trim() method doesn’t accept any parameter. It will remove all whitespace characters on either side of the original string.

The method returns a new string, so the original string won’t be affected.

Also, keep in mind that trim() won’t remove whitespace in the middle of your string.

Consider the following example:

let str = "  Hello  Wo  rld!  ";
let trimStr = str.trim();

console.log(trimStr); // "Hello  Wo  rld!"

The whitespace characters between Wo and rld! are not removed in the above example.

If you want to remove whitespaces from between the characters too, you need to the combination of the split() and join() methods to your string as follows:

let str = "  Hello  Wo  rld!  ";
let trimStr = str.split(' ').join('');

console.log(trimStr); // "HelloWorld!"

Or you can also use the replace() method and pass a regular expression to search whitespace characters and replace them with an empty string('').

Here’s how you do it:

let str = "  Hello  Wo  rld!  ";
let trimStr = str.replace(/\s+/g, '');

console.log(trimStr); // "HelloWorld!"

The /\s+/g regex pattern will match all whitespace characters, and the replace() method will do the removal.

And now you’ve learned how to remove whitespace characters using JavaScript trim() and replace() methods. Nice work!

The replace() method is one of the most useful methods of the string object. It can also be used to format number digits with commas for easier reading.

I hope this tutorial has been useful for you. 🙏

Original article source at:

#javascript #string #remove 

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

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Hire Dedicated JavaScript Developers -Hire JavaScript Developers

It is said that a digital resource a business has must be interactive in nature, so the website or the business app should be interactive. How do you make the app interactive? With the use of JavaScript.

Does your business need an interactive website or app?

Hire Dedicated JavaScript Developer from WebClues Infotech as the developer we offer is highly skilled and expert in what they do. Our developers are collaborative in nature and work with complete transparency with the customers.

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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.

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