{"id":50404,"date":"2019-02-22T10:56:50","date_gmt":"2019-02-22T05:26:50","guid":{"rendered":"https:\/\/data-flair.training\/blogs\/?p=50404"},"modified":"2025-04-08T20:03:16","modified_gmt":"2025-04-08T14:33:16","slug":"javascript-tutorial","status":"publish","type":"post","link":"https:\/\/data-flair.training\/blogs\/javascript-tutorial\/","title":{"rendered":"JavaScript Tutorial &#8211; Best JavaScript Guide for Beginners!"},"content":{"rendered":"<div class='__iawmlf-post-loop-links' style='display:none;' data-iawmlf-post-links='[{&quot;id&quot;:1458,&quot;href&quot;:&quot;https:\\\/\\\/en.wikipedia.org\\\/wiki\\\/HTML&quot;,&quot;archived_href&quot;:&quot;http:\\\/\\\/web-wp.archive.org\\\/web\\\/20251203082718\\\/https:\\\/\\\/en.wikipedia.org\\\/wiki\\\/HTML&quot;,&quot;redirect_href&quot;:&quot;&quot;,&quot;checks&quot;:[{&quot;date&quot;:&quot;2025-12-09 07:35:14&quot;,&quot;http_code&quot;:200},{&quot;date&quot;:&quot;2025-12-12 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20:57:59&quot;,&quot;http_code&quot;:403},{&quot;date&quot;:&quot;2026-01-31 04:56:07&quot;,&quot;http_code&quot;:403},{&quot;date&quot;:&quot;2026-02-04 06:22:22&quot;,&quot;http_code&quot;:403},{&quot;date&quot;:&quot;2026-02-07 22:21:03&quot;,&quot;http_code&quot;:403},{&quot;date&quot;:&quot;2026-02-11 08:06:47&quot;,&quot;http_code&quot;:403},{&quot;date&quot;:&quot;2026-02-20 08:38:18&quot;,&quot;http_code&quot;:403},{&quot;date&quot;:&quot;2026-02-28 09:03:33&quot;,&quot;http_code&quot;:403},{&quot;date&quot;:&quot;2026-03-03 20:26:21&quot;,&quot;http_code&quot;:403},{&quot;date&quot;:&quot;2026-03-13 06:15:29&quot;,&quot;http_code&quot;:403},{&quot;date&quot;:&quot;2026-03-21 19:43:04&quot;,&quot;http_code&quot;:403},{&quot;date&quot;:&quot;2026-04-07 06:52:07&quot;,&quot;http_code&quot;:403},{&quot;date&quot;:&quot;2026-04-20 18:25:47&quot;,&quot;http_code&quot;:403},{&quot;date&quot;:&quot;2026-04-27 20:28:44&quot;,&quot;http_code&quot;:403},{&quot;date&quot;:&quot;2026-05-01 16:08:28&quot;,&quot;http_code&quot;:403},{&quot;date&quot;:&quot;2026-05-09 21:09:45&quot;,&quot;http_code&quot;:403},{&quot;date&quot;:&quot;2026-05-19 10:01:47&quot;,&quot;http_code&quot;:403},{&quot;date&quot;:&quot;2026-05-26 07:01:20&quot;,&quot;http_code&quot;:403}],&quot;broken&quot;:true,&quot;last_checked&quot;:{&quot;date&quot;:&quot;2026-05-26 07:01:20&quot;,&quot;http_code&quot;:403},&quot;process&quot;:&quot;done&quot;}]'><\/div>\n<p>Have you ever noticed that your website is lacking something?\u00a0Maybe it\u2019s not appealing enough or it\u2019s not as visionary as you want it to be.\u00a0JavaScript is that missing key which can be used to embellish web pages, applications, etc. It also provides more user-friendly actions.<\/p>\n<p>Today in this JavaScript Tutorial we are going to take a look on\u00a0 &#8211;<\/p>\n<ol>\n<li>What is JavaScript?<\/li>\n<li>History of JavaScript.<\/li>\n<li>Why do we need JavaScript?<\/li>\n<li>How JavaScript Works?<\/li>\n<li>Prerequisites.<\/li>\n<li>Features of JavaScript.<\/li>\n<li>Pros and Cons of JavaScript.<\/li>\n<li>Applications of JavaScript.<\/li>\n<li>Careers in JavaScript.<\/li>\n<\/ol>\n<p><a href=\"https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2019\/02\/JavaScript-Tutorial.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-61831\" src=\"https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2019\/02\/JavaScript-Tutorial.jpg\" alt=\"JavaScript Tutorial \" width=\"802\" height=\"420\" srcset=\"https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2019\/02\/JavaScript-Tutorial.jpg 802w, https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2019\/02\/JavaScript-Tutorial-150x79.jpg 150w, https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2019\/02\/JavaScript-Tutorial-300x157.jpg 300w, https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2019\/02\/JavaScript-Tutorial-768x402.jpg 768w, https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2019\/02\/JavaScript-Tutorial-520x272.jpg 520w\" sizes=\"auto, (max-width: 802px) 100vw, 802px\" \/><\/a><\/p>\n<p>&nbsp;<\/p>\n<p>Let&#8217;s start the best JavaScript Tutorial&#8230;<\/p>\n<p style=\"text-align: right;\"><span style=\"color: #ff6600;\"><strong><em>&#8220;JavaScript is the only language that I&#8217;m aware of that people feel they don&#8217;t need to learn before they start using it.&#8221;\u00a0 \u00a0 \u00a0\u00a0<\/em><\/strong><strong><em>-Douglas Crockford<\/em><\/strong><\/span><\/p>\n<h3>What is JavaScript?<\/h3>\n<p><em>JavaScript is a very powerful client-side scripting language, introduced to \u201cmake webpages alive\u201d. This allows us to create dynamic content for the web. JavaScript is a lightweight language that is open-source and allows cross-platform.<\/em> It doesn\u2019t require compilation and is interpreted with object-oriented capabilities.<\/p>\n<p>Also, it works with various other programming languages. And this is the reason for its vast use all around the world. Many popular websites and web applications like Google, Amazon, PayPal, etc use this language. The file extension of a JavaScript file is <strong>.js<\/strong>.<\/p>\n<h3>History of JavaScript<\/h3>\n<p><strong>Brendan Eich developed JavaScript in 1995<\/strong>\u00a0while working for Netscape Communications, Java, Scheme, and Self, inspired it. As Microsoft became a mortal threat, Netscape started the process of standardization to prevent Microsoft from gaining access to JavaScript. They also partnered with Sun Microsystems (usually called Sun) to break the Microsoft monopoly.<\/p>\n<p>The reason the partnership between Sun and Netscape worked so perfectly was that they both had the same goal. JavaScript was initially known as<em> LiveScript<\/em> by Netscape and Mocha by Sun. They later renamed LiveScript\/Mocha as JavaScript.<\/p>\n<blockquote><p><strong><span style=\"color: #ff6600;\">Though Java and Javascript sound similar, they are not alike. They have very different syntax, semantics, and uses. The only thing in common is that both are trademarks or registered trademarks of Oracle in the U.S. and other countries.<\/span><\/strong><\/p><\/blockquote>\n<p>Because of the popularity of Java at the time, initially, we called JavaScript the<em> \u201cYounger Brother of Java\u201d.<\/em> But it soon became independent with its own ECMAScript in 1997 and doesn\u2019t resemble Java at all.<\/p>\n<p><em>JavaScript 1.8.5 is the latest version and it includes many of the ECMA-262 Edition 5 compliance. The developers released it on July 27, 2010.<\/em><\/p>\n<h3>Why do we need JavaScript?<\/h3>\n<p>Moving forward in our JavaScript Tutorial, now we are going to discuss why we need JavaScript.<\/p>\n<p>Most applications work due to an interaction between a client (user\u2019s device) and a remote server. The client requests data from the server. The server receives the request, processes it and then responds accordingly. The response sent back is in a user-readable format and is thus acceptable by the client. But this process takes time as well as resources. Although we usually need this connection, in some projects, JavaScript often helps to avoid it.<\/p>\n<p>JavaScript allows the validation of forms without the input of the server, reducing traffic. It provides wonderful tools for a more interactive and user-friendly website. Some of the basic functions of JavaScript are:<\/p>\n<ul>\n<li><strong>Autocomplete:<\/strong> The search box gives suggestions, based on what the user has already typed.<\/li>\n<li><strong>Form validation:<\/strong> If the users make a mistake while filling a form, JavaScript immediately informs them of the error, avoiding to fill it all again.<\/li>\n<li><strong>Fixes layout<\/strong> <strong>issues<\/strong> to avoid the overlapping of elements on the page.<\/li>\n<li><strong>Adds animation<\/strong> to the page to make it more attractive.<\/li>\n<\/ul>\n<p><em><strong>Did you check our most trending blog on <a href=\"https:\/\/data-flair.training\/blogs\/javascript-objects\/\">JavaScript Objects?<\/a><\/strong><\/em><\/p>\n<h3>How JavaScript Works?<\/h3>\n<p>Next step in our JavaScript Tutorial is to check the working of JavaScript &#8211;<\/p>\n<p>JavaScript is single-threaded. This means that the instructions execute sequentially, one at a time. This is possible with the help of the following components:<\/p>\n<h4>4.1. The JavaScript Engine<\/h4>\n<p>It is a program responsible for the translation of source code into machine language and its execution on a CPU. Each modern browser comes with a JavaScript engine. Thus there is no need to download any extra software.<\/p>\n<p>The engine consists of 2 components:<\/p>\n<ul>\n<li><strong>Memory Heap<\/strong>&#8211; Memory allocation takes place here.<\/li>\n<li><strong>Call Stack<\/strong>&#8211; When the script calls a function, the interpreter first adds it to the call stack and then starts processing it.<\/li>\n<\/ul>\n<p>The most used JavaScript Engines include Chrome V8, Firefox\u2019s SpiderMonkey, Safari\u2019s Nitro and Edge\u2019s Chakra.<\/p>\n<h4>4.2. The Runtime<\/h4>\n<p>The JavaScript Engine works inside an environment for additional features used at runtime. Although JavaScript is single-threaded, the runtime environment consists of a thread pool. It allows JavaScript to simultaneously run in the background while the user browses without interrupting the program flow.<\/p>\n<h4>4.3. Event Loop<\/h4>\n<p>This mechanism manages all the threads from the thread pool in the order of their execution i.e. it handles callbacks. A callback is a piece of code executed when a particular event i.e. mouse click occurs.<\/p>\n<p>If an event occurs, the environment puts the callback in the Event Handler under the Event Loop. Callbacks are always executed one at a time.<\/p>\n<h3>JavaScript Tutorial &#8211; Prerequisites<\/h3>\n<p>JavaScript development requires <a href=\"https:\/\/en.wikipedia.org\/wiki\/HTML\">HTML<\/a> and CSS, but not for learning it. You can learn HTML and CSS as you start to understand the basics of JavaScript. Though not compulsory, it is beneficial if the user is familiar with object-oriented programming concepts.<\/p>\n<h3>Features of JavaScript<\/h3>\n<p>Following are the top JavaScript Features &#8211;<\/p>\n<ul>\n<li>Supports object-oriented programming concepts.<\/li>\n<li>It is platform-independent and case- sensitive.<\/li>\n<li>Provides various in-built functions like alert(), prompt() etc.<\/li>\n<li>Capable of exception handling.<\/li>\n<li>Allows the use of functions with or without any name. A function without a name is an anonymous function.<\/li>\n<li>It permits embedding variables directly in strings.<\/li>\n<li>External files can be included using javascript module syntax.<\/li>\n<li>It is interpreted language that supports browser and OS detection.<\/li>\n<\/ul>\n<p><em><strong>Want more right?<\/strong><\/em><\/p>\n<p><em><strong>Here it is, our separate blog on <a href=\"https:\/\/data-flair.training\/blogs\/features-of-javascript\/\">Features of JavaScript<\/a><\/strong><\/em><\/p>\n<h3>Pros and Cons of JavaScript<\/h3>\n<p>Moving ahead in our JavaScript Tutorial, it&#8217;s time to discuss some pros and cons of JavaScript.<\/p>\n<h4>JavaScript Advantages<\/h4>\n<ul>\n<li>\n<h5>Faster Speed<\/h5>\n<\/li>\n<\/ul>\n<p>It provides high speed to client-side languages. The various features added to the JavaScript for interactivity helps in boosting the speed.<\/p>\n<ul>\n<li>\n<h5>Ease of Learning<\/h5>\n<\/li>\n<\/ul>\n<p>JavaScript is an easy language to learn and implement. If the learner is familiar with other programming languages like C or Java, it is much easier to understand the additional features JavaScript provides.<\/p>\n<ul>\n<li>\n<h5>Reduces Server Load<\/h5>\n<\/li>\n<\/ul>\n<p>We avoid server traffic by validating user input on the client-side. It reduces server load, giving it an advantage over other web languages.<\/p>\n<ul>\n<li>\n<h5>Regular Updates<\/h5>\n<\/li>\n<\/ul>\n<p>The team updates JavaScript annually that provides an edge to JavaScript. This also makes JavaScript a lot more reliable.<\/p>\n<ul>\n<li>\n<h5>Popularity<\/h5>\n<\/li>\n<\/ul>\n<p>We use JavaScript almost everywhere on the web. By following the DataFlair\u2019s\u00a0<a href=\"https:\/\/data-flair.training\/blogs\/javascript-tutorials-home\/\"><em><strong>Complete\u00a0<\/strong><strong><em>JavaScript Series<\/em><\/strong><\/em><\/a><strong>\u00a0<\/strong>you\u00a0will become an expert in no time.<\/p>\n<ul>\n<li>\n<h5>Rich Interfaces<\/h5>\n<\/li>\n<\/ul>\n<p>JavaScript provides numerous interfaces to make the webpage more interactive.<\/p>\n<ul>\n<li>\n<h5>Development<\/h5>\n<\/li>\n<\/ul>\n<p>JavaScript saves the compilation time, this results in faster development of applications.<\/p>\n<h3>Disadvantages of Javascript<\/h3>\n<ul>\n<li>\n<h5>Different Browser Interpretations<\/h5>\n<\/li>\n<\/ul>\n<p>All browsers don\u2019t interpret JavaScript in the same manner. Different browsers often display content differently.<\/p>\n<ul>\n<li>\n<h5>Security Issues<\/h5>\n<\/li>\n<\/ul>\n<p>Since JavaScript is a client-side language, people may exploit it for malicious practices. Due to this reason, some users prefer to disable JavaScript on their device.<\/p>\n<ul>\n<li>\n<h5>Single Inheritance<\/h5>\n<\/li>\n<\/ul>\n<p>It only supports single inheritance and not multiple inheritance.<\/p>\n<ul>\n<li>\n<h5>Sluggish Bitwise Operation<\/h5>\n<\/li>\n<\/ul>\n<p>JavaScript uses <strong>32-bit<\/strong> bitwise operands but <strong>64-bit<\/strong> floating-point numbers. Thus before performing any operation, JavaScript converts the number to <strong>32-bits<\/strong> signed integers. After the operation, it converts them back to <strong>64-bits<\/strong> JavaScript numbers. This reduces the speed taken by the script.<\/p>\n<p><em><strong>Don&#8217;t forget to explore our latest blog on\u00a0<a href=\"https:\/\/data-flair.training\/blogs\/advantages-disadvantages-javascript\/\">Pros and Cons of JavaScript.<\/a><\/strong><\/em><\/p>\n<h3>Applications of JavaScript<\/h3>\n<ul>\n<li>\n<h5>Web Development<\/h5>\n<\/li>\n<\/ul>\n<p><a href=\"https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2019\/07\/Web_development.png\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-thumbnail wp-image-61702\" src=\"https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2019\/07\/Web_development-150x150.png\" alt=\"Web_development\" width=\"150\" height=\"150\" srcset=\"https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2019\/07\/Web_development-150x150.png 150w, https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2019\/07\/Web_development-160x160.png 160w, https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2019\/07\/Web_development.png 250w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/a><\/p>\n<p>Web Development is a standalone language for creating web pages. It also supports external applications like PDF documents, running widgets, etc. This also adds various special effects to the page like graphics.<\/p>\n<ul>\n<li>\n<h5>Web Applications<\/h5>\n<\/li>\n<\/ul>\n<p><a href=\"https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2019\/07\/Web_application.png\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-thumbnail wp-image-61707\" src=\"https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2019\/07\/Web_application-150x150.png\" alt=\"Web_application\" width=\"150\" height=\"150\" srcset=\"https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2019\/07\/Web_application-150x150.png 150w, https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2019\/07\/Web_application-160x160.png 160w, https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2019\/07\/Web_application.png 250w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/a>Web Applications interacts with the browser without sending messages between the browser and the server. With the help of different frameworks available in the market, it is very easy to create interactive pages. It saves the amount of time and effort required by the developer to build a web application.<\/p>\n<ul>\n<li>\n<h5>Presentations<\/h5>\n<\/li>\n<\/ul>\n<p><a href=\"https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2019\/07\/Presentation.png\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-thumbnail wp-image-61708\" src=\"https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2019\/07\/Presentation-150x150.png\" alt=\"Presentation\" width=\"150\" height=\"150\" srcset=\"https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2019\/07\/Presentation-150x150.png 150w, https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2019\/07\/Presentation-160x160.png 160w, https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2019\/07\/Presentation.png 250w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/a>JavaScript provides user-friendly libraries and frameworks for presentations. It provides polished themes that are not too flashy.<\/p>\n<ul>\n<li>\n<h5>Server Applications<\/h5>\n<\/li>\n<\/ul>\n<p><a href=\"https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2019\/07\/Server-Applications.png\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-thumbnail wp-image-61711\" src=\"https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2019\/07\/Server-Applications-150x150.png\" alt=\"Server-Applications\" width=\"150\" height=\"150\" srcset=\"https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2019\/07\/Server-Applications-150x150.png 150w, https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2019\/07\/Server-Applications-160x160.png 160w, https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2019\/07\/Server-Applications.png 250w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/a>Javascript is also very useful for building server applications and is faster than other server-side languages. NodeJS is an open-source and free server environment used to achieve this. It allows the generation of dynamic web content, modify a database, collect form data, etc.<\/p>\n<ul>\n<li>\n<h5>Web Servers<\/h5>\n<\/li>\n<\/ul>\n<p><a href=\"https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2019\/07\/Web_servers.png\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-thumbnail wp-image-61712\" src=\"https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2019\/07\/Web_servers-150x150.png\" alt=\"Web_servers\" width=\"150\" height=\"150\" srcset=\"https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2019\/07\/Web_servers-150x150.png 150w, https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2019\/07\/Web_servers-160x160.png 160w, https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2019\/07\/Web_servers.png 250w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/a>NodeJS has a built-in module (a set of functions) that allows the creation of an HTTP server. Though starting as a client-side script, JavaScript is now fully capable of server-side scripting as well.<\/p>\n<ul>\n<li>\n<h5>Games<\/h5>\n<\/li>\n<\/ul>\n<p><a href=\"https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2019\/07\/Games.png\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-thumbnail wp-image-61713\" src=\"https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2019\/07\/Games-150x150.png\" alt=\"Games\" width=\"150\" height=\"150\" srcset=\"https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2019\/07\/Games-150x150.png 150w, https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2019\/07\/Games-160x160.png 160w, https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2019\/07\/Games.png 250w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/a>Along with HTML5, JavaScript helps in game development. EaselJS library provides simple solutions for working with rich graphics. It also has a familiar API many developers prefer.<\/p>\n<ul>\n<li>\n<h5>Art<\/h5>\n<\/li>\n<\/ul>\n<p><a href=\"https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2019\/07\/Art.png\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-thumbnail wp-image-61714\" src=\"https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2019\/07\/Art-150x150.png\" alt=\"Art\" width=\"150\" height=\"150\" srcset=\"https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2019\/07\/Art-150x150.png 150w, https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2019\/07\/Art-160x160.png 160w, https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2019\/07\/Art.png 250w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/a>Using JavaScript, drawing graphics with HTML has become easier in a web page. A canvas is present without any border or content so that the users can create their own art. It has equipped the user with a medium for different digital art projects.<\/p>\n<ul>\n<li>\n<h5>Smartwatch Applications<\/h5>\n<\/li>\n<\/ul>\n<p><a href=\"https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2019\/07\/Smartwatch_application.png\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-thumbnail wp-image-61715\" src=\"https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2019\/07\/Smartwatch_application-150x150.png\" alt=\"Smartwatch_application\" width=\"150\" height=\"150\" srcset=\"https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2019\/07\/Smartwatch_application-150x150.png 150w, https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2019\/07\/Smartwatch_application-160x160.png 160w, https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2019\/07\/Smartwatch_application.png 250w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/a>JavaScript contains a library PebbleJS which provides simple solutions for working with rich graphics. The developer has access to many features for the application built for smartwatches.<\/p>\n<ul>\n<li>\n<h5>Mobile Applications<\/h5>\n<\/li>\n<\/ul>\n<p><a href=\"https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2019\/07\/Mobile_application.png\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-thumbnail wp-image-61716\" src=\"https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2019\/07\/Mobile_application-150x150.png\" alt=\"Mobile_application\" width=\"150\" height=\"150\" srcset=\"https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2019\/07\/Mobile_application-150x150.png 150w, https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2019\/07\/Mobile_application-160x160.png 160w, https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2019\/07\/Mobile_application.png 250w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/a><\/p>\n<p>JavaScript provides a framework called PhoneGap that supports mobile applications. React Native is also serving the same purpose these days. With a decent knowledge of HTML, CSS, and JavaScript, we can build wonderful applications.<\/p>\n<ul>\n<li>\n<h5>Machine Learning<\/h5>\n<\/li>\n<\/ul>\n<p><a href=\"https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2019\/07\/Machine_leaning.png\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-61717 size-thumbnail\" src=\"https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2019\/07\/Machine_leaning-150x150.png\" alt=\"Machine_learning\" width=\"150\" height=\"150\" srcset=\"https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2019\/07\/Machine_leaning-150x150.png 150w, https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2019\/07\/Machine_leaning-160x160.png 160w, https:\/\/data-flair.training\/blogs\/wp-content\/uploads\/sites\/2\/2019\/07\/Machine_leaning.png 250w\" sizes=\"auto, (max-width: 150px) 100vw, 150px\" \/><\/a>Javascript has introduced machine learning along with all the previous features. Various frameworks like Keras.js, BrainJS, Compromise, and WebDNN improve the functionality of JavaScript in the field of AI.<\/p>\n<h3>Career in JavaScript<\/h3>\n<p>JavaScript is a scripting language, used to make a website more interactive and more functional. There are many career opportunities in JavaScript including UI\/UX designer, JavaScript developer, web designer, full-stack developer, etc. The use of JavaScript on every modern web browser provides a very high scope for the learners in the future.<\/p>\n<p>The vast expanse of JavaScript presents many opportunities for anyone who wants to excel in the field. It gives a tough competition to every other programming language. It is currently one of the best programming languages to learn and that won\u2019t be changing anytime soon.<\/p>\n<p><em><strong>Are you ready to make your career in JavaScript?\u00a0<\/strong><\/em><em><strong>Don&#8217;t miss our tutorial on <a href=\"https:\/\/data-flair.training\/blogs\/javascript-jobs\/\">Career Opportunities in JavaScript.<\/a><\/strong><\/em><\/p>\n<h3>Summary<\/h3>\n<p>With this, we come to the end of our JavaScript Tutorial. Now we can say that we are familiar with the term JavaScript. It allows us to dynamically create and manipulate content and multimedia for the web. JavaScript helps in supporting and creating some of the best applications that we use worldwide. Suffice it to say, it\u2019s a great language for both beginners, as well as the experts. <b><i>Do not forget to check the <a href=\"https:\/\/techvidvan.com\/courses\/javascript-course-english\/\">Best Online JavaScript Course.<\/a><\/i><\/b><\/p>\n<p>Hope the information provided was helpful for you!<\/p>\n<p>Waiting for your feedback in our Comment Box.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Have you ever noticed that your website is lacking something?\u00a0Maybe it\u2019s not appealing enough or it\u2019s not as visionary as you want it to be.\u00a0JavaScript is that missing key which can be used to&#46;&#46;&#46;<\/p>\n","protected":false},"author":7,"featured_media":61831,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[18979],"tags":[20382,18985,18984,18980,18981,18986],"class_list":["post-50404","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-javascript","tag-how-javascript-works","tag-javascript-applications","tag-javascript-tools","tag-javascript-tutorial","tag-learn-javascript","tag-what-is-javascript"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>JavaScript Tutorial - Best JavaScript Guide for Beginners! - DataFlair<\/title>\n<meta name=\"description\" content=\"JavaScript Tutorial - JavaScript is a very powerful client-side scripting language, introduced to \u201cmake webpages alive\u201d. 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