Dexter  Goodwin

Dexter Goodwin

1663056840

10 Favorite JavaScript String Libraries

In today's post we will learn about 10 Favorite JavaScript String Libraries.

There are different ways to manipulate strings, look up parts of a string in various positions, and trim and replace strings. With each release of the JavaScript specification, more methods are added to make string search and manipulating easier than ever. So in this post I’ve collected some Javscript libraries that will make working with strings easy for developers.

Table of contents:

  • Voca - The ultimate JavaScript string library.
  • Selecting - A library that allows you to access the text selected by the user.
  • Underscore.string - String manipulation extensions for Underscore.js JavaScript library.
  • String.js - Extra JavaScript string methods.
  • He - A robust HTML entity encoder/decoder written in JavaScript.
  • Multiline - Multiline strings in JavaScript.
  • Query-string - Parse and stringify URL query strings.
  • URI.js - JavaScript URL mutation library.
  • jsurl - Lightweight URL manipulation with JavaScript.
  • Sprintf.js - A sprintf implementation.

1 - Voca: The ultimate JavaScript string library.

Voca is a JavaScript library for manipulating strings. https://vocajs.com

v.camelCase('bird flight');              // => 'birdFlight'
v.sprintf('%s costs $%.2f', 'Tea', 1.5); // => 'Tea costs $1.50'
v.slugify('What a wonderful world');     // => 'what-a-wonderful-world'

The Voca library offers helpful functions to make string manipulations comfortable: change case, trim, pad, slugify, latinise, sprintf'y, truncate, escape and much more. The modular design allows to load the entire library, or individual functions to minimize the application builds. The library is fully tested, well documented and long-term supported.

Usage

Voca can be used in various environments.

Node.js, Rollup, Webpack, Browserify

Voca JavaScript library supports Node.js, Rollup, Webpack, Browserify

Install the library with npm into your local modules directory:

npm install voca

CommonJS modules

Then in your application require the entire library:

const v = require('voca');
v.trim(' Hello World! ');            // => 'Hello World'
v.sprintf('%d red %s', 3, 'apples'); // => '3 red apples'

Or require individual functions:

const words = require('voca/words');
const slugify = require('voca/slugify');
words('welcome to Earth'); // => ['welcome', 'to', 'Earth']
slugify('caffé latté');    // => 'caffe-latte'

View on Github

2 - Selecting: A library that allows you to access the text selected by the user.

A library that allows you to access the text selected by the user.

Instalation

To install Selecting, execute:

  npm install selecting

Or Bower too:

  bower install selecting

Or simply pick up the file from src directory.

Supported Browsers

  • Google Chrome
  • Firefox
  • Internet Explorer 9.0+
  • Safari
  • Opera
  • iOS
  • Android

View on Github

3 - Underscore.string: String manipulation extensions for Underscore.js JavaScript library.

Javascript lacks complete string manipulation operations. This is an attempt to fill that gap. List of build-in methods can be found for example from Dive Into JavaScript. Originally started as an Underscore.js extension but is a full standalone library nowadays.

Upgrading from 2.x to 3.x? Please read the changelog.

Usage

For Node.js, Browserify and Webpack

Install from npm

npm install underscore.string

Require individual functions

var slugify = require("underscore.string/slugify");

slugify("Hello world!");
// => hello-world

or load the full library to enable chaining

var s = require("underscore.string");

s("   epeli  ").trim().capitalize().value();
// => "Epeli"

but especially when using with Browserify the individual function approach is recommended because using it you only add those functions to your bundle you use.

In Meteor

From your Meteor project folder

    meteor add underscorestring:underscore.string

and you'll be able to access the library with the s global from both the server and the client.

s.slugify("Hello world!");
// => hello-world

s("   epeli  ").trim().capitalize().value();
// => "Epeli"

View on Github

4 - String.js: Extra JavaScript string methods.

string.js, or simply S is a lightweight (< 5 kb minified and gzipped) JavaScript library for the browser or for Node.js that provides extra String methods. Originally, it modified the String prototype. But I quickly learned that in JavaScript, this is considered poor practice.

Installation

If you want to use this library, you first need to install the [Node.js] (https://nodejs.org/en/).

When you install node.js, will also be installed [npm] (https://www.npmjs.com/).

Please run the following command.

npm install --save string

Experiment with String.js Now

Assuming you're on http://stringjs.com, just simply open up the Webkit inspector in either Chrome or Safari, or the web console in Firefox and you'll notice that string.js is included in this page so that you can start experimenting with it right away.

Usage

Node.js

var S = require('string');

Originally, I was using $s but glancing over the code, it was easy to confuse $s for string.js with $ for jQuery. Feel free to use the most convenient variable for you.

Rails

Checkout this gem to easily use string.js on the asset pipeline: https://github.com/jesjos/stringjs-rails

Browsers

<!-- HTML5 -->
<script src="https://cdn.rawgit.com/jprichardson/string.js/master/dist/string.min.js"></script>

<!-- Note that in the mime type for Javascript is now officially 'application/javascript'. If you
set the type to application/javascript in IE browsers, your Javacript will fail. Just don't set a
type via the script tag and set the mime type from your server. Most browsers look at the server mime
type anyway -->

<!-- For HTML4/IE -->
<script type="text/javascript" src="https://cdn.rawgit.com/jprichardson/string.js/master/dist/string.min.js"></script>

A global variable window.S or simply S is created.

View on Github

5 - He: A robust HTML entity encoder/decoder written in JavaScript.

he (for “HTML entities”) is a robust HTML entity encoder/decoder written in JavaScript. It supports all standardized named character references as per HTML, handles ambiguous ampersands and other edge cases just like a browser would, has an extensive test suite, and — contrary to many other JavaScript solutions — he handles astral Unicode symbols just fine. An online demo is available.

Installation

Via npm:

npm install he

Via Bower:

bower install he

Via Component:

component install mathiasbynens/he

In a browser:

<script src="he.js"></script>

In Node.js, io.js, Narwhal, and RingoJS:

var he = require('he');

In Rhino:

load('he.js');

Using an AMD loader like RequireJS:

require(
  {
    'paths': {
      'he': 'path/to/he'
    }
  },
  ['he'],
  function(he) {
    console.log(he);
  }
);

View on Github

6 - Multiline: Multiline strings in JavaScript.

Before

const str = '' +
'<!doctype html>' +
'<html>' +
'	<body>' +
'		<h1>❤ unicorns</h1>' +
'	</body>' +
'</html>' +
'';

After

const str = multiline(()=>{/*
<!doctype html>
<html>
	<body>
		<h1>❤ unicorns</h1>
	</body>
</html>
*/});

How

It works by wrapping the text in a block comment, anonymous function, and a function call. The anonymous function is passed into the function call and the contents of the comment extracted.

Even though it's slower than string concat, that shouldn't realistically matter as you can still do 2 million of those a second. Convenience over micro performance always.

Install

$ npm install multiline

View on Github

7 - Query-string: Parse and stringify URL query strings.

Install

$ npm install query-string

Not npm install querystring!!!!!

This module targets Node.js 6 or later and the latest version of Chrome, Firefox, and Safari.

Usage

const queryString = require('query-string');

console.log(location.search);
//=> '?foo=bar'

const parsed = queryString.parse(location.search);
console.log(parsed);
//=> {foo: 'bar'}

console.log(location.hash);
//=> '#token=bada55cafe'

const parsedHash = queryString.parse(location.hash);
console.log(parsedHash);
//=> {token: 'bada55cafe'}

parsed.foo = 'unicorn';
parsed.ilike = 'pizza';

const stringified = queryString.stringify(parsed);
//=> 'foo=unicorn&ilike=pizza'

location.search = stringified;
// note that `location.search` automatically prepends a question mark
console.log(location.search);
//=> '?foo=unicorn&ilike=pizza'

API

.parse(string, options?)

Parse a query string into an object. Leading ? or # are ignored, so you can pass location.search or location.hash directly.

The returned object is created with Object.create(null) and thus does not have a prototype.

options

Type: object

decode

Type: boolean
Default: true

Decode the keys and values. URL components are decoded with decode-uri-component.

View on Github

8 - URI.js: JavaScript URL mutation library.

I always want to shoot myself in the head when looking at code like the following:

var url = "http://example.org/foo?bar=baz";
var separator = url.indexOf('?') > -1 ? '&' : '?';

url += separator + encodeURIComponent("foo") + "=" + encodeURIComponent("bar");

Things are looking up with URL and the URL spec but until we can safely rely on that API, have a look at URI.js for a clean and simple API for mutating URIs:

var url = new URI("http://example.org/foo?bar=baz");
url.addQuery("foo", "bar");

URI.js is here to help with that.

API Example

// mutating URLs
URI("http://example.org/foo.html?hello=world")
  .username("rodneyrehm")
    // -> http://rodneyrehm@example.org/foo.html?hello=world
  .username("")
    // -> http://example.org/foo.html?hello=world
  .directory("bar")
    // -> http://example.org/bar/foo.html?hello=world
  .suffix("xml")
    // -> http://example.org/bar/foo.xml?hello=world
  .query("")
    // -> http://example.org/bar/foo.xml
  .tld("com")
    // -> http://example.com/bar/foo.xml
  .query({ foo: "bar", hello: ["world", "mars"] });
    // -> http://example.com/bar/foo.xml?foo=bar&hello=world&hello=mars

// cleaning things up
URI("?&foo=bar&&foo=bar&foo=baz&")
  .normalizeQuery();
    // -> ?foo=bar&foo=baz

// working with relative paths
URI("/foo/bar/baz.html")
  .relativeTo("/foo/bar/world.html");
    // -> ./baz.html

URI("/foo/bar/baz.html")
  .relativeTo("/foo/bar/sub/world.html")
    // -> ../baz.html
  .absoluteTo("/foo/bar/sub/world.html");
    // -> /foo/bar/baz.html

// URI Templates
URI.expand("/foo/{dir}/{file}", {
  dir: "bar",
  file: "world.html"
});
// -> /foo/bar/world.html

See the About Page and API Docs for more stuff.

View on Github

9 - jsurl: Lightweight URL manipulation with JavaScript.

Lightweight URL manipulation with JavaScript for both DOM and server JavaScript.

Goal

To have a convenient way working with URLs in JavaScript. From time to time there are usual tasks when it is required to add or remove some parameters to some basic URL or change some other URL parts.

There is no easy standard way to do it in JavaScript.

This small library intended to fix that problem

How To Use

First of all it is required to include Url class on the page. It can be simply done as

<script src="url.min.js"></script>

Then any time it's required to do some work over the URL string, it's just required to instantiate the Url object and work with that object instead of initial string. See API description below to get a clue.

Install with JAM

It is possible also to install domurl via JAM repository (http://jamjs.org/). Could be simply done as:

$ jam install domurl

Install with Bower

It is also possible now to install domurl using Bower package repository. Could be done simply as:

$ bower install domurl

Install with NPM

Domurl is available on NPM and is now works well for both server and browser:

$ npm install domurl

View on Github

10 - Sprintf.js: A sprintf implementation.

sprintf-js is a complete open source JavaScript sprintf implementation for the browser and Node.js.

Note: as of v1.1.1 you might need some polyfills for older environments. See Support section below.

Usage

var sprintf = require('sprintf-js').sprintf,
    vsprintf = require('sprintf-js').vsprintf

sprintf('%2$s %3$s a %1$s', 'cracker', 'Polly', 'wants')
vsprintf('The first 4 letters of the english alphabet are: %s, %s, %s and %s', ['a', 'b', 'c', 'd'])

Installation

NPM

npm install sprintf-js

Bower

bower install sprintf

API

sprintf

Returns a formatted string:

string sprintf(string format, mixed arg1?, mixed arg2?, ...)

vsprintf

Same as sprintf except it takes an array of arguments, rather than a variable number of arguments:

string vsprintf(string format, array arguments?)

View on Github

Top 5 JavaScript Libraries to Check Out Right Now!

#javascript #string 

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10 Favorite JavaScript String Libraries
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JavaScript Strings Tutorial

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#javascript #strings #javascript strings #javascript strings tutorial

Dexter  Goodwin

Dexter Goodwin

1663056840

10 Favorite JavaScript String Libraries

In today's post we will learn about 10 Favorite JavaScript String Libraries.

There are different ways to manipulate strings, look up parts of a string in various positions, and trim and replace strings. With each release of the JavaScript specification, more methods are added to make string search and manipulating easier than ever. So in this post I’ve collected some Javscript libraries that will make working with strings easy for developers.

Table of contents:

  • Voca - The ultimate JavaScript string library.
  • Selecting - A library that allows you to access the text selected by the user.
  • Underscore.string - String manipulation extensions for Underscore.js JavaScript library.
  • String.js - Extra JavaScript string methods.
  • He - A robust HTML entity encoder/decoder written in JavaScript.
  • Multiline - Multiline strings in JavaScript.
  • Query-string - Parse and stringify URL query strings.
  • URI.js - JavaScript URL mutation library.
  • jsurl - Lightweight URL manipulation with JavaScript.
  • Sprintf.js - A sprintf implementation.

1 - Voca: The ultimate JavaScript string library.

Voca is a JavaScript library for manipulating strings. https://vocajs.com

v.camelCase('bird flight');              // => 'birdFlight'
v.sprintf('%s costs $%.2f', 'Tea', 1.5); // => 'Tea costs $1.50'
v.slugify('What a wonderful world');     // => 'what-a-wonderful-world'

The Voca library offers helpful functions to make string manipulations comfortable: change case, trim, pad, slugify, latinise, sprintf'y, truncate, escape and much more. The modular design allows to load the entire library, or individual functions to minimize the application builds. The library is fully tested, well documented and long-term supported.

Usage

Voca can be used in various environments.

Node.js, Rollup, Webpack, Browserify

Voca JavaScript library supports Node.js, Rollup, Webpack, Browserify

Install the library with npm into your local modules directory:

npm install voca

CommonJS modules

Then in your application require the entire library:

const v = require('voca');
v.trim(' Hello World! ');            // => 'Hello World'
v.sprintf('%d red %s', 3, 'apples'); // => '3 red apples'

Or require individual functions:

const words = require('voca/words');
const slugify = require('voca/slugify');
words('welcome to Earth'); // => ['welcome', 'to', 'Earth']
slugify('caffé latté');    // => 'caffe-latte'

View on Github

2 - Selecting: A library that allows you to access the text selected by the user.

A library that allows you to access the text selected by the user.

Instalation

To install Selecting, execute:

  npm install selecting

Or Bower too:

  bower install selecting

Or simply pick up the file from src directory.

Supported Browsers

  • Google Chrome
  • Firefox
  • Internet Explorer 9.0+
  • Safari
  • Opera
  • iOS
  • Android

View on Github

3 - Underscore.string: String manipulation extensions for Underscore.js JavaScript library.

Javascript lacks complete string manipulation operations. This is an attempt to fill that gap. List of build-in methods can be found for example from Dive Into JavaScript. Originally started as an Underscore.js extension but is a full standalone library nowadays.

Upgrading from 2.x to 3.x? Please read the changelog.

Usage

For Node.js, Browserify and Webpack

Install from npm

npm install underscore.string

Require individual functions

var slugify = require("underscore.string/slugify");

slugify("Hello world!");
// => hello-world

or load the full library to enable chaining

var s = require("underscore.string");

s("   epeli  ").trim().capitalize().value();
// => "Epeli"

but especially when using with Browserify the individual function approach is recommended because using it you only add those functions to your bundle you use.

In Meteor

From your Meteor project folder

    meteor add underscorestring:underscore.string

and you'll be able to access the library with the s global from both the server and the client.

s.slugify("Hello world!");
// => hello-world

s("   epeli  ").trim().capitalize().value();
// => "Epeli"

View on Github

4 - String.js: Extra JavaScript string methods.

string.js, or simply S is a lightweight (< 5 kb minified and gzipped) JavaScript library for the browser or for Node.js that provides extra String methods. Originally, it modified the String prototype. But I quickly learned that in JavaScript, this is considered poor practice.

Installation

If you want to use this library, you first need to install the [Node.js] (https://nodejs.org/en/).

When you install node.js, will also be installed [npm] (https://www.npmjs.com/).

Please run the following command.

npm install --save string

Experiment with String.js Now

Assuming you're on http://stringjs.com, just simply open up the Webkit inspector in either Chrome or Safari, or the web console in Firefox and you'll notice that string.js is included in this page so that you can start experimenting with it right away.

Usage

Node.js

var S = require('string');

Originally, I was using $s but glancing over the code, it was easy to confuse $s for string.js with $ for jQuery. Feel free to use the most convenient variable for you.

Rails

Checkout this gem to easily use string.js on the asset pipeline: https://github.com/jesjos/stringjs-rails

Browsers

<!-- HTML5 -->
<script src="https://cdn.rawgit.com/jprichardson/string.js/master/dist/string.min.js"></script>

<!-- Note that in the mime type for Javascript is now officially 'application/javascript'. If you
set the type to application/javascript in IE browsers, your Javacript will fail. Just don't set a
type via the script tag and set the mime type from your server. Most browsers look at the server mime
type anyway -->

<!-- For HTML4/IE -->
<script type="text/javascript" src="https://cdn.rawgit.com/jprichardson/string.js/master/dist/string.min.js"></script>

A global variable window.S or simply S is created.

View on Github

5 - He: A robust HTML entity encoder/decoder written in JavaScript.

he (for “HTML entities”) is a robust HTML entity encoder/decoder written in JavaScript. It supports all standardized named character references as per HTML, handles ambiguous ampersands and other edge cases just like a browser would, has an extensive test suite, and — contrary to many other JavaScript solutions — he handles astral Unicode symbols just fine. An online demo is available.

Installation

Via npm:

npm install he

Via Bower:

bower install he

Via Component:

component install mathiasbynens/he

In a browser:

<script src="he.js"></script>

In Node.js, io.js, Narwhal, and RingoJS:

var he = require('he');

In Rhino:

load('he.js');

Using an AMD loader like RequireJS:

require(
  {
    'paths': {
      'he': 'path/to/he'
    }
  },
  ['he'],
  function(he) {
    console.log(he);
  }
);

View on Github

6 - Multiline: Multiline strings in JavaScript.

Before

const str = '' +
'<!doctype html>' +
'<html>' +
'	<body>' +
'		<h1>❤ unicorns</h1>' +
'	</body>' +
'</html>' +
'';

After

const str = multiline(()=>{/*
<!doctype html>
<html>
	<body>
		<h1>❤ unicorns</h1>
	</body>
</html>
*/});

How

It works by wrapping the text in a block comment, anonymous function, and a function call. The anonymous function is passed into the function call and the contents of the comment extracted.

Even though it's slower than string concat, that shouldn't realistically matter as you can still do 2 million of those a second. Convenience over micro performance always.

Install

$ npm install multiline

View on Github

7 - Query-string: Parse and stringify URL query strings.

Install

$ npm install query-string

Not npm install querystring!!!!!

This module targets Node.js 6 or later and the latest version of Chrome, Firefox, and Safari.

Usage

const queryString = require('query-string');

console.log(location.search);
//=> '?foo=bar'

const parsed = queryString.parse(location.search);
console.log(parsed);
//=> {foo: 'bar'}

console.log(location.hash);
//=> '#token=bada55cafe'

const parsedHash = queryString.parse(location.hash);
console.log(parsedHash);
//=> {token: 'bada55cafe'}

parsed.foo = 'unicorn';
parsed.ilike = 'pizza';

const stringified = queryString.stringify(parsed);
//=> 'foo=unicorn&ilike=pizza'

location.search = stringified;
// note that `location.search` automatically prepends a question mark
console.log(location.search);
//=> '?foo=unicorn&ilike=pizza'

API

.parse(string, options?)

Parse a query string into an object. Leading ? or # are ignored, so you can pass location.search or location.hash directly.

The returned object is created with Object.create(null) and thus does not have a prototype.

options

Type: object

decode

Type: boolean
Default: true

Decode the keys and values. URL components are decoded with decode-uri-component.

View on Github

8 - URI.js: JavaScript URL mutation library.

I always want to shoot myself in the head when looking at code like the following:

var url = "http://example.org/foo?bar=baz";
var separator = url.indexOf('?') > -1 ? '&' : '?';

url += separator + encodeURIComponent("foo") + "=" + encodeURIComponent("bar");

Things are looking up with URL and the URL spec but until we can safely rely on that API, have a look at URI.js for a clean and simple API for mutating URIs:

var url = new URI("http://example.org/foo?bar=baz");
url.addQuery("foo", "bar");

URI.js is here to help with that.

API Example

// mutating URLs
URI("http://example.org/foo.html?hello=world")
  .username("rodneyrehm")
    // -> http://rodneyrehm@example.org/foo.html?hello=world
  .username("")
    // -> http://example.org/foo.html?hello=world
  .directory("bar")
    // -> http://example.org/bar/foo.html?hello=world
  .suffix("xml")
    // -> http://example.org/bar/foo.xml?hello=world
  .query("")
    // -> http://example.org/bar/foo.xml
  .tld("com")
    // -> http://example.com/bar/foo.xml
  .query({ foo: "bar", hello: ["world", "mars"] });
    // -> http://example.com/bar/foo.xml?foo=bar&hello=world&hello=mars

// cleaning things up
URI("?&foo=bar&&foo=bar&foo=baz&")
  .normalizeQuery();
    // -> ?foo=bar&foo=baz

// working with relative paths
URI("/foo/bar/baz.html")
  .relativeTo("/foo/bar/world.html");
    // -> ./baz.html

URI("/foo/bar/baz.html")
  .relativeTo("/foo/bar/sub/world.html")
    // -> ../baz.html
  .absoluteTo("/foo/bar/sub/world.html");
    // -> /foo/bar/baz.html

// URI Templates
URI.expand("/foo/{dir}/{file}", {
  dir: "bar",
  file: "world.html"
});
// -> /foo/bar/world.html

See the About Page and API Docs for more stuff.

View on Github

9 - jsurl: Lightweight URL manipulation with JavaScript.

Lightweight URL manipulation with JavaScript for both DOM and server JavaScript.

Goal

To have a convenient way working with URLs in JavaScript. From time to time there are usual tasks when it is required to add or remove some parameters to some basic URL or change some other URL parts.

There is no easy standard way to do it in JavaScript.

This small library intended to fix that problem

How To Use

First of all it is required to include Url class on the page. It can be simply done as

<script src="url.min.js"></script>

Then any time it's required to do some work over the URL string, it's just required to instantiate the Url object and work with that object instead of initial string. See API description below to get a clue.

Install with JAM

It is possible also to install domurl via JAM repository (http://jamjs.org/). Could be simply done as:

$ jam install domurl

Install with Bower

It is also possible now to install domurl using Bower package repository. Could be done simply as:

$ bower install domurl

Install with NPM

Domurl is available on NPM and is now works well for both server and browser:

$ npm install domurl

View on Github

10 - Sprintf.js: A sprintf implementation.

sprintf-js is a complete open source JavaScript sprintf implementation for the browser and Node.js.

Note: as of v1.1.1 you might need some polyfills for older environments. See Support section below.

Usage

var sprintf = require('sprintf-js').sprintf,
    vsprintf = require('sprintf-js').vsprintf

sprintf('%2$s %3$s a %1$s', 'cracker', 'Polly', 'wants')
vsprintf('The first 4 letters of the english alphabet are: %s, %s, %s and %s', ['a', 'b', 'c', 'd'])

Installation

NPM

npm install sprintf-js

Bower

bower install sprintf

API

sprintf

Returns a formatted string:

string sprintf(string format, mixed arg1?, mixed arg2?, ...)

vsprintf

Same as sprintf except it takes an array of arguments, rather than a variable number of arguments:

string vsprintf(string format, array arguments?)

View on Github

Top 5 JavaScript Libraries to Check Out Right Now!

#javascript #string 

Condo Mark

Condo Mark

1602900514

Top 10 JavaScript String Methods You Should Know

Introduction

String methods in JavaScript help you to work with strings, mastering those methods is a good idea, because a lot of times you will find yourself working with strings in your JavaScript program or application, So you will need to know those methods. That’s why in this article I decided to show you 10 useful string methods that maybe you didn’t know some of them.

Javascript Code.

Photo by Irvan Smith on Unsplash

1. String Length

The **length** property returns the length of a string. Take a look at the example below:

Length Method.

The Length method.

2. Searching for a String

You can search for a string inside another string using the search method, It will return the position of that string. Have a look at the example below:

The Search Method in Javascript.

The Search method.

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Rahul Jangid

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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

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