JavaScript Homework Help

What is Java Script?

JavaScript is a dynamic, high-level, simple and easy-to-learn computer programming language. It is small in size and weight and most commonly used in web development. It was basically initiated by Netscape Communications Corporation and ECMA International to develop dynamic and cooperative elements to the websites, whose implementations permit client-side script to communicate with the user and create dynamic and interactive pages. It is also refer as interpreted programming language with object-oriented abilities.

For example, a web form may be checked by a JavaScript function before submitting it to make confirm that all the mandatory fields have been filled out or not. If all required fields are not filled out then it will produce an error, to fill that particular field.

JavaScript is a simple and easy-to-learn language as compared to other programming language such as Ruby, C++, and Python. It is an interpreted and high level programming language that can be enclosed efficiently with languages like HTML. Means Java Script is used with other languages to create more dynamic web pages.

JavaScript is a text-oriented (text based) programming language. It is used both as the client-side and server-side that permits you to create interactive web pages . While HTML and CSS languages are used to provide structure and style to web pages. It offers interactive elements to the web pages that attract a user.

Uses of Java Script :

JavaScript is a very famous and the most widely used programming language in the world, for developing dynamic and interactive web based applications. JavaScript is generally used to make simple and easy browser games. We can also use JavaScript to build mobile applications. As a combination, it is generally used with third-party frameworks like Ember, Node and React .

So it's no doubt to say that today it's one of the most looked up skills in the web development industry. On the report of the Devskiller IT Skills and Hiring Report 2020, 72% of firms are looking to enrol JavaScript specialists.

The basic code for JavaScript :

For writing a Java Script code or program we require either a text editor or an HTML and a web browser.

These both are available easily and free of cost.

Once you have both software available, you can start writing JavaScript code. If you want add JavaScript code to an HTML file, open or create an HTML file with your text/HTML editor.

Java Script code is mainly based on tags. Each tag has its opening tag and closing tag as well.

You can add Java Script code into HTML code by adding <script> and </script>. The code enclosed by the <script> and </script> tags is known as a script blog. We can write <script> tags between the <head> and </head> tags or between <body> and </body> tags. Type attribute is the main attribute of <script> tag.

Best ways to learn JavaScript fast :

There are main five ways to learn JavaScript. These are listed as follows.

Books - As we know books are our good friends so when you are in doubt, read a book and clear your doubt.
Websites and Courses. The Internet is a repository of knowledge.
Coding Boot Camps. Maybe the self-taught route isn't for you.
Meetings and Networking Events.
Starting to make your own projects and implement your thoughts.

JavaScript tools :

Dominant JavaScript Development Tools and IDEs (integrated development environment) for Web developers are as follows.

Atom - It is the simple editor for writing the JavaScript program and it is also one of the best IDEs (integrated development environment).
AWS Cloud9.
Eclipse
Sublime Text.
WebStorm.
Goorm
Visual Studio.
CodePen.

JavaScript functions :

JavaScript function is similar to a procedure. A JavaScript function is a block of code or a set of statements that does a work or calculates a value. It can be call anywhere in the program.There is no need to write same code again and again. Just make a function and call it when it is needed. It reduces the code.

Javascript Features

Light weight and delicate language
Ability to perform in built function.
Interpreted centered scripting language.
Allow Dynamic Typing.
Support Client edge Technology.
Use Else and If Statement.
It is in Case Sensitive format.
Support Object-oriented programming.
Functional Style.
It is used in multiple cross platform or it is platform independent.
It is based on Prototype.
Async Processing.
It validate user's input.

Advantages of JavaScript :

The greatest dominant advantage of JavaScript is to have a ability to support all latest browsers and create an corresponding result.

Some other advantages are listed as follows.

High Speed.
Free : It is available free of cost.
Easier and simplicity - Everyone uses it. It is more simple to learn and implement.
It provides multiple fun applications.
It's almost present everywhere.
It's pretty easy to learn.
Provides a better job security.
Platform independence - It can be used in all browsers.
It provides you a facility to control your content - means you can manage your content according to you.
Popularity - It is a most widely used and popular language.
It provides interoperability.
Minimize Server Load.
Provides the ability to make rich interfaces.

Disadvantages of JavaScript :

Some JavaScript disadvantages are mentioned as follows.

Difficult in client-side security - As we know the JavaScript code is visible to the user so others may use it for wrong and harmful motives.
Lack of rectifying or correcting Facility.
Randomly Stopped.
Browser Support - different browser interprets JavaScript differently.
Provides Single Inheritance only.
Slow Bit wise Function.

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