JavaScript Pros, Cons and its Alternatives

JavaScript Pros, Cons and its Alternatives

JavaScript is mostly used programming language for developing interactive website and to add functionalities in the website. In-spite of all this JavaScript also have some cons that might be not useful for web development perspective.

Following are the some Pros and Cons of this language:

Pros

§  JavaScript is executed on the client side: Client side execution means code runs on users web browser not on the web server thus reducing the demand over the web server.

§  Speed: Being the client side scripting language JS code runs fast without to wait for web server to respond.

§  Versatility: JavaScript is very friendly to the user. It can be used in any web page irrespective of the file extension. It can be inserted inside other scripts like PHP and Perl.

§    No Plugins: No additional plugins are required to use Javascript.

§   Security: JavaScript program read and write from the hard drive of the system, so no virus or threat issue comes directly from Javascript.

Cons

§         JavaScript code runs on the user computer so, it can always be a threat to be exploited for malicious  purpose. So sometimes disabling JavaScript is always preferred in some cases.

§          A page will not work if script stops working

§         Complex scripts takes longer time to execute, even sometimes starts slow.

§         It does not support standard set of objects

Alternative to JavaScript to make website dynamic and interactive

§  CoffeeScript: It is mostly used as an alternative to JavaScript. We can write script by neat declaration of function, no need to include curly braces. It can run in any environment and available as npm package. 

§   EMScripten: It compiles C and C++ into highly optimized JS format which is Asm.js. This format is the itself JS based and runs in the browser or anywhere in which JavaScript runs. This alternative gives great advantage to C and C++ developer who can write code for the web without looking into JavaScript. Similarly we can convert thousands of C and C++ code and runs over the web browser.

§  

      Traceur: Traceur supports all features of JS. It compiles ESMAScript Edition 6(ES6) code including classes etc, to the regular JS.

§  

       TypeScript: It is the super set of JavaScript and gives additional features to JS like types, classes, modules etc. By this one can write JavaScript, copy existing Javascript and make use of enhanced features. Also allows JS libraries and frameworks to utilize in Typescript Project.

The JavaScript is growing from client side to server side web development which increases the demand to be fulfilled by this programming language. So using only plain JS is not enough to meet the requirements. Many scripting languages are introduced that compile to Javascript over the last few years to target the changing needs of development.

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