JavaScript is a browser based programming/scripting language which is commonly used by web designers and developers. This just helps to enhance the user experience and performance of the website. JavaScript uses the same syntax as Java. This is mostly used for implementing on page calculation, graphics and special effects, and for security of web pages. JavaScript helps to make the page more attractive, interactive, and dynamic.
Advantages Of Using JavaScript In Web Application
JavaScript has been a great tool to increase user interaction on any webpage, and the benefits of this scripting language are well known to all of us. Here are few major benefits of using JavaScript:
- Client side execution: JavaScript is executed on the user’s system processor instead of your web server. This saves your bandwidth as well as reduces the server load.
- Easy to use: It is very easy to write any script and implement it. It uses syntax which is pretty close to English language so you can learn it easily. The DOM model provides lots of prewritten functions to various objects on-page which makes it easier to write a script.
- Fast execution: JavaScript is very fast to the end users, since it is executed on the user’s processor, you can get almost instant results.
- Extended functionality to the web pages:You can use JavaScript to improve your web page interactivity and design. Here are few applications of JavaScript in web page creation:
- Visual improvement and user interaction: You can improve the visual effects on the web page to attract the users and make them stay on the page. The use of JavaScript helps you to interact with users, you can make them to involve with your web page with any script. Here are few page effects which you can achieve with the help of JavaScript:
- Popups & Tooltips
- Page timeout
- User’s time on the page
- Collapsing text
- Color changes and fades
- Embedded audio
- Ultimate fader
- Font sizing and fades
- Scrolling banners
- Print page/element
- News scroller
- Image transition
- Flying text
- Automated popups
- Toggle buttons
- With the help of these functions you can make the users to stay on your page and keep exploring with in your website.
- Plugin creation and integration: JavaScript allows you to create user plugins and it integrates into the html web pages smoothly. You can access browser and platform specific objects also like (media player, Acrobat reader, etc…)
- Client side form validation:JavaScript allows you to validate the form on the client side. You can check the form for errors before the submission, the user get the response instantly about the form validation without waiting for the response from server side.
Disadvantages Of JavaScript Uses
- As like everything JavaScript also has its limitation and disadvantages. You have to be cautious while using JavaScript in your web pages. Here are few disadvantages of JavaScript:
- Security issues: Since JavaScript is executed on the client system; anyone can use it to exploit the user’s system. Although the modern browsers have certain restrictions for these malicious codes but a well written malicious code can skip under their radar and affect your system.
- JavaScript rendering varies: Since it is executed on user’s system, different layout engines can render JavaScript in different way and it can create inconsistency in the result.
- It can create negative impact on search engine: Search engines looks for the content for the credibility of the page. If you use too much JavaScript on your page and less content, it can cause the lower ranking for your webpage. Although you can avoid it by using JavaScript files and then importing it to the page instead of writing the whole script on the page.
- You need to use JavaScript to make your webpage more attractive, because user will be attracted to the website which has good visual and user experience. If you are using any script in your page then it is always recommended to test it for different browsers before you put it online.
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