How to start with JavaScript. Free JavaScript course

Javascript is a client-side programming language which is a processing engine embedded in web browsers. First released version was Livescript but they change the name later to JavaScript.

Javascript was devised to add more exciting features to HTML pages. HTML on it is on is pretty tedious and it cannot do much furthermore screen a webpage. Javascript programming, on the other hand, can provide a host of exciting features like perform calculations, allows the user to interact with webpages, perform form validations, control components on a webpage, provide outstanding visual effects, enables dynamic functions and so much more.

All this supplies the user to the website with an enhanced user experience. Because javascript is a client-side language, all of these attributes are available in real time with no browser having to refer to the server all the time.

Perform Calculations
Javascript may be utilized to do easy to advanced mathematical calculations. This really is particularly useful should you want your users to interact with your website by inputting some tips which requires some kind of calculation and showing the pertinent content based on that result. By way of example, javascript can calculate financing repayment and display the appropriate result if a user inputs a required loan amount on the site. Moreover, javascript may also tell date and time, time a certain action and perform complex date and time computations.

Control Elements On A Webpage
Javascript enables a user to modify content or styles of a webpage upon a user interaction by way of the aforementioned events. For instance, hovering over a certain text can make an image seem, text on a submit button can change on submit, etc.

Validation
Javascript can validate and check user input signal to determine whether it conforms to a specific requirement. As an example, you can assess if a field is left empty, if an email address is in the proper format, if a zip code code is in the proper format, etc. Usually, if an error is made by your web site visitor, an alarm can display the correct error message to them.

Enables Dynamic Functions
Javascript, together with AJAX (asynchronous JavaScript and XML), can be utilized to generate dynamic applications.

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