Camron  Shields

Camron Shields

1579061280

JavaScript String Replace() Tutorial with Examples

In this tutorial, you’ll how to use JavaScript String replace() method to replace a substring in a string with a new one.

Introduction to the JavaScript String replace() method

The following shows the syntax of the replace() method:

let newStr = str.replace(substr, newSubstr);

The JavaScript String replace() method returns a new string with a substring (substr) replaced by a new one (newSubstr).

Note that the replace() method doesn’t change the original string. It returns a new string.

JavaScript String replace() examples

The following example uses the replace() to replace the JS in the string 'JS will, JS will rock you' wit the new substring JavaScript:

let str = 'JS will, JS will rock you!';
let newStr = str.replace('JS','JavaScript');

console.log(newStr);

Output:

JavaScript will, JS will rock you!

As you can see from the output, only the first occurrence of the substring JS was replaced with the new substring JavaScript.

To replace all occurrences of a substring in a string with a new one, you must use a regular expression.

Using regular expressions

The replace() method fully supports regular expressions:

let newStr = str.replace(regexp, newSubstr);

In this syntax, the replace() method find all matches in the str, replaces them by the newSubstr, and returns a new string (newStr).

The following example uses the global flag (g) to replace all occurrences of the JS in the str by the JavaScript:

let str = 'JS will, JS will rock you!';
let newStr = str.replace(/JS/g,'JavaScript');

console.log(newStr);

Output:

JavaScript will, JavaScript will rock you!

If you want to ignore cases for searching and replacement, you can use the ignore flag (i) in the regular expression like this:

let str = 'JS will, Js will rock you!';
let newStr = str.replace(/JS/gi,'JavaScript');

console.log(newStr);

Output:

JavaScript will, JavaScript will rock you!

#javascript #programming #developer #web-development

What is GEEK

Buddha Community

JavaScript String Replace() Tutorial with Examples
Lowa Alice

Lowa Alice

1624399200

JavaScript Strings Tutorial

JavaScript Strings

📺 The video in this post was made by Programming with Mosh
The origin of the article: https://www.youtube.com/watch?v=09BwruU4kiY&list=PLTjRvDozrdlxEIuOBZkMAK5uiqp8rHUax&index=6
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#javascript #strings #javascript strings #javascript strings tutorial

Javascript String Replace: How to Replace String in JavaScript

Javascript String replace() is an inbuilt function that returns the new string with some or all matches of the pattern replaced by the replacement. The pattern can be the string or the RegExp or Regular Expression, and the replacement can be the string or the function to be called for each match. If the pattern is a  string, only the first occurrence will be replaced.

Javascript String replace()

The javascript string replace() method does not change the String object it is called on. It only returns a new string if we want to perform a global search and replace, including the g switch in the regular expression.

Syntax

The syntax of the Javascript string replace() method is the following.

string.replace(searchValue, newValue)

#javascript #javascript string replace #regexp #regular expression

Terry  Tremblay

Terry Tremblay

1602147513

Now Learn JavaScript Programming Language With Microsoft

icrosoft has released a new series of video tutorials on YouTube for novice programmers to get a hands-on renowned programming language — JavaScript.

This isn’t the first attempt by Microsoft to come up with video tutorials by beginner programmers. The company also has a series of YouTube tutorials on Python for beginners.

For JavaScript, Microsoft has launched a series of 51 videos as ‘Beginner’s Series to JavaScript,’ for young programmers, developers and coders who are interested in building browser applications using JavaScript. These video tutorials will also help programmers and coders to use relevant software development kits (SDKs) and JavaScript frameworks, such as Google’s Angular.


“Learning a new framework or development environment is made even more difficult when you don’t know the programming language,” stated on the Microsoft Developer channel on YouTube. “Fortunately, we’re here to help! We’ve created this series of videos to focus on the core concepts of JavaScript.”

It further stated — while the tutorials don’t cover every aspect of JavaScript, it indeed will help in building a foundation from which one can continue to grow. By the end of this series, Microsoft claims that the novice programmers will be able to work through tutorials, quick starts, books, and other resources, continuing to grow on their own.


#news #javascript #javascript tutorial #javascript tutorials #microsoft tutorials on javascript

wp codevo

wp codevo

1608042336

JavaScript Shopping Cart - Javascript Project for Beginners

https://youtu.be/5B5Hn9VvrVs

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Lowa Alice

Lowa Alice

1624379820

JavaScript Tutorial for Beginners: Learn JavaScript in 1 Hour

Watch this JavaScript tutorial for beginners to learn JavaScript basics in one hour.
avaScript is one of the most popular programming languages in 2019. A lot of people are learning JavaScript to become front-end and/or back-end developers.

I’ve designed this JavaScript tutorial for beginners to learn JavaScript from scratch. We’ll start off by answering the frequently asked questions by beginners about JavaScript and shortly after we’ll set up our development environment and start coding.

Whether you’re a beginner and want to learn to code, or you know any programming language and just want to learn JavaScript for web development, this tutorial helps you learn JavaScript fast.

You don’t need any prior experience with JavaScript or any other programming languages. Just watch this JavaScript tutorial to the end and you’ll be writing JavaScript code in no time.

If you want to become a front-end developer, you have to learn JavaScript. It is the programming language that every front-end developer must know.

You can also use JavaScript on the back-end using Node. Node is a run-time environment for executing JavaScript code outside of a browser. With Node and Express (a popular JavaScript framework), you can build back-end of web and mobile applications.

If you’re looking for a crash course that helps you get started with JavaScript quickly, this course is for you.

⭐️TABLE OF CONTENT ⭐️

00:00 What is JavaScript
04:41 Setting Up the Development Environment
07:52 JavaScript in Browsers
11:41 Separation of Concerns
13:47 JavaScript in Node
16:11 Variables
21:49 Constants
23:35 Primitive Types
26:47 Dynamic Typing
30:06 Objects
35:22 Arrays
39:41 Functions
44:22 Types of Functions

📺 The video in this post was made by Programming with Mosh
The origin of the article: https://www.youtube.com/watch?v=W6NZfCO5SIk&list=PLTjRvDozrdlxEIuOBZkMAK5uiqp8rHUax&index=2
🔥 If you’re a beginner. I believe the article below will be useful to you ☞ What You Should Know Before Investing in Cryptocurrency - For Beginner
⭐ ⭐ ⭐The project is of interest to the community. Join to Get free ‘GEEK coin’ (GEEKCASH coin)!
☞ **-----CLICK HERE-----**⭐ ⭐ ⭐
Thanks for visiting and watching! Please don’t forget to leave a like, comment and share!

#javascript #javascript tutorial #javascript tutorial for beginners #beginners