Tips and tricks for optimizing JavaScript performance
In the previous five years, JavaScript has emerged as the leading scripting language among the modern developers. JavaScript is everywhere, from servers, games, websites, operating systems, and even robots also. Not just that, JavaScript is also one of the most well known languages used on GitHub.
Considering the consistently developing popularity of JavaScript in the domains of web and mobile application development, it gets essential for JavaScript developers to be updated with the best performance practices. Hence let us discuss some tips for improving Javascript performance.
Also know- Top 6 JavaScript Date Libraries.
Tips for improving Javascript performance-
1. Learn asynchronous programming-
To fetch the data, your application would require a few internal calls to various APIs. One way to solve this issue is by getting different middleware for each function. JavaScript has a great deal of synchronous components since it’s single-threaded. These components have the capability to lock the complete application.
However, JavaScript’s async.js feature helps in efficient management of asynchronous codes. This causes async code to get pushed to an event queue where it fires after the execution of all other code. However, even with JavaScript’s async feature, there’s a possibility of using an external library that could return to the synchronous blocking call. And, this could affect the general performance.
The most ideal approach to handle this is to consistently use asynchronous APIs in your code. In any case, you should always remember that understanding the complexities of async programming is often challenging for novices.
2. Avoid using global variables-
Since the scripting engine needs to look through the scope while referencing global variables from within function or another scope, the variable will be destroyed when the local scope is lost. If variables in the global scope can not continue through the lifetime of the script, the performance will be improved.
3. Keep codes light and small-
To maintain the high performance of mobile applications, it’s better to keep the code light and also reduced. Keeping codes light and small would decrease the latency and boost up the speed. While you’re in a development stage, you should ask yourself these questions below.
No comments:
Post a Comment