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What is JavaScript and how to enable it?


What is JavaScript and how to enable it? Detail of scripting language.

What is Java script ?

If you have used Browsers for Internet Browsing, then you must have seen the option of Enable Java script. Then it must have come to your mind that what this Java script is and why it is necessary to enable it. Well, to understand it in simple words, we can say that Java Script is not the main programming language but it is a scripting language. It uses primarily in browsers and uses only with HTML or CSS. There are many features of this that we will learn in the next article.

Often people do not know the difference between Java Script and Java and they both start to think the same. Well, it does not happen at all. Both of this language are totally different. Therefore, today I thought to give full information about why you to use  Javascript, its information and its benefits so that there will be no other dilemma in your mind. Then without delay, let’s start and know about javascript.

What is java script ? Java Script is a very common use client-side scripting language. Or we can say it use in all major web browsers. It contains the largest library ecosystem in any programming language. Since this is a scripting language, its code can also be written in an HTML page. So when a user requests the HTML page, in which a javascript present, this script sent to the browser and it depends on the browser that they want to co-operate with it.

By the way, there is no relation between JavaScript and Java. Just because of Java use in name, therefore JavaScript called: The World’s Most Misunderstood Programming Language

JavaScript Official Name ECMAScript defined under Standard ECMA-262

What are the JavaScript Frameworks?

The frameworks use most often are React JS, Angular JS, Create JS, jQuery, NodeJS etc

Javascript introduction

JavaScript is one of the 3 languages that all web developers must learn from, let’s also know about the three languages.

1. HTML used to define the content of web pages.

2. CSS use to specify the layout of web pages.

3. JavaScript used to program the Behavior of Web pages.

Only web pages are not the only place where JavaScript used. Because JavaScript also used in many desktop and server programs. Node.js is such a program. In some databases, such as MongoDB and CouchDB, JavaScript used according to their programming language.

Differences in Java and Javascript

Often people think that the difference between Java and Javascript is the same. But there really is nothing like this. So let’s know about the difference between these two.

JavaScript is not exactly like Java. I want to tell you once more that both JavaScript and Java are different.

Well both these names are very swinging, those who create a doubt create a mind in their minds. Where this language primarily used on the basis of a scripting language, in HTML pages, Java a real programming language that used entirely in other work. Learning Java can be a bit daunting. It used to develop by Sun Microsystem in all those things where computing power was needed.

Javascript developed by Brendan Eich, who used to work in Netscape at that time, they develop it at the end of a client-side scripting language (Well there is no such fundamental reason why it is in a server-side environment. Can not use).

Originally the name of this language was Live Script, but when it was about to be released, then Java was very popular. So in the last possible moment, Netscape changed its name to “JavaScript”.

Mostly, both Java and JavaScript are using C and C ++, but these languages work completely different from their ancestors. Both languages are object-oriented and they share some similar syntax too. But there are differences in it compared to similarities.

What is java script? scripting language
What is java script code?

How to enable JavaScript

Right now most web pages have JavaScript, this is a scripting programming language that runs in the visitor’s web browser. This makes web pages functional for specific purposes, if they are disabled for some reason, then the content of Web Page or its functionality also becomes limited or unavailable.

So let’s know how to enable JavaScript in different browsers: –

Enable JavaScript in Google Chrome
1. In your web browser’s menu, click on “Customize and control Google Chrome” and select “Settings”.

2. In the “Settings” section, click on “Show advanced settings …”.

3. Click on “Privacy” in the “Content settings.”

4. When the dialog window is open, you have to look at the “JavaScript” section and so select “Allow all sites to run in JavaScript (recommended)”.

5. Then click on the “OK” button to close it.

6. Close the “Settings” tab.

7. Click on “Reload this page” button in your web browser where the page will be refreshed.

8. Now it Enables JavaScript.

Enable JavaScript in Internet Explorer
1. On the Web browser menu, click on the “Tools” icon and select “Internet Options”.

2. Select “Internet Options” window on the “Security” tab.

3. Click on the “Security” tab on the “Custom level” button.

4. When the dialog window of “Security Settings – Internet Zone” is open, you will need to go to the “Scripting” section.

5. In the “Active Scripting” item, select “Enable”.

6. By doing so, a “Warning!” Window pops out in front of you asking, “Are you sure that you want to change this setting for this zone?” Select “Yes”.

7. Click on the “Internet Options” window to close it on the “OK” button.
8. Then click on the “Refresh” button on the web browser from which the page will refresh again.

9. Enable JavaScript done.

Enable JavaScript in Mozilla Firefox
1. In the address bar, type about: config and press Enter.

2. Click “I’ll be careful, I promise” if any warning message appears in front of you.

3. In the same search box, search javascript.enabled

4. Then Toggle the “javascript.enabled” preference (right-click and select “Toggle” or double-click that preference) which you can change its value from “false” to “true”.

5. Click the “Reload current page” button on the web browser, from which you can refresh the page.

Enable JavaScript in Opera
1. Click the Opera icon “Menu” and then “Settings”.

2. Click “Websites” and then select “Allow all sites to run JavaScript (recommended)”

3. Click on the “Reload” button to refresh that page of the web browser.

Enable JavaScript in Apple Safari
1. In your web browser menu, click on “Edit” and select “Preferences”.

2. On the “Preferences” window, select the “Security” tab.

3. After that mark on “Web content” in the “Security” tab section, “Enable JavaScript” checkbox.

4. Click “Reload the current page” button on the web browser, so that you can refresh the page.

What is JavaScript Language?

JavaScript is not a programming language only if we are in a strict sense. Rather it is a scripting language because it instructs the browser to do all the dirty work of background. If you command to replace an image from another, the JavaScript browser tells it to do this. Because actually all the work is done by the browser, you just have to write some code in this scripting language so that the browser can do all your work. Especially because JavaScript is a very easy language for beginners.

Advantages and Disadvantages of Java Script
Like other computer languages, Java Script also has some advantages and disadvantages. Where it was previously limited to only a few tasks, nowadays it is used in many tasks.

Benefits of java script

1. Speed. Client-side Java Script is very fast because it runs instantly in the client-side browser. As long as outside resources are needed, JavaScript remains unhindered, with network calls in a backend server. There is no need to be compiled in the client side so that it gets some speed advantages.

2. Simplicity. Java Script is very easy to learn and also to implement together.

3. Popularity Java Script is used throughout the web. To learn it, too many resources on the internet are indigenous. StackOverflow and GitHub are two major websites from which you can learn everything about Javascript.

4. Interoperability. JavaScript is easily compatible with other languages, along with it is also used in many applications. Unlike PHP and SSI scripts, JavaScript can be easily inserted into any web page. JavaScript can also be used within other scripts that have been written in different languages such as Perl and PHP.

5. Server Load. Due to this being used in the client-side, its demand decreases in the website server.

6. Rich interfaces. Having drag, or drop components, or the slider, it provides a rich interface to your website.

7. Versatility Just now Java Script has been used in many servers too. Java Script is used in the front-end clients server, as well as a complete whole JavaScript app can be created from front to back only to JavaScript with help.

Javascript losses
1. Client-Side Security Because this code execute is the user’s computer, so in some cases, it can also be exploited for malicious purposes. This is one of the main reasons for which some people prefer to disable Javascript.

2.Browser Support. Sometimes JavaScript differently interpreted in other browsers. Wherever server-side scripts always produce the same type of output, the output of client-side scripts is somewhat unpredictable. Well, this is not a major problem as long as they are working correctly in big and popular browsers, it is all safe.

Java script today
When I talk about the time now, these scripts are all in place – this is the most common use client-side scripting language. Java Script is written in HTML documents and it enables interactions in very unique ways with other web pages. For example, these are only Java Script that can automatically schedule appointments and play online games. Apart from this, new developments, such as Node.js, allow it to be used in server-side, similar APIs, such as HTML5, allows user media and other device features.

I hope you have this article in my java script . This is always my endeavor to give readers full information about the difference between Java and Java script, so that they do not need to find any other sites or internet in that context.

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