Tip 2: Learn the Techniques of Asynchronous Programming
Tip 3: Implement Various Optimizations
i. Always use algorithms having the least computational complexity for solving tasks using optimum data structures.
ii. Rewrite algorithms and obtain the same results with fewer calculations.
iii. Avoid recursive calls.
iv. Put in variables, calls, and calculations for all repeated functions.
v. Simplify mathematical formulae.
vi. Use search arrays instead of switch or case statement, to get a value based on another.
vii. Always make conditions that are more likely to be true so that you can take better advantage of the speculative execution of the processor.
viii. Replace certain operations with bit-level operators as they use fewer processor cycles.
Tip 4: Gzip Compression
Tip 5: Avoid Using Global Variables
When you refer a global variable from within function or another scope, the variable will get destroyed if the local scope is lost as the scripting engine looks through the scope. If the variable in the global scope cannot persist through the lifetime of the script, the performance will improve.
Tip 6: Keep Code Small and Light
It is essential to keep the code as light and compact as possible for maintaining the high performance of mobile applications. This helps to reduce latency and increase speed. If you are in a development stage, you must ask a few questions to yourself. For instance, if you really need this module, if you can do it in a simpler manner, why are you using this framework, and if this is worth the overhead.
Tip 7: Avoid Unwanted Loops
Tip 8: Minimize DOM Access
Tip 9: Cache Objects to Boost Performance
Tip 10: Shortcut Codes
Speed up the coding process by creating shortcuts for longer and useful codes that are constantly being used. For instance, document.getElementByld. If you are creating shortcuts, longer scripts will not take much time to code and thus overall process time will be saved.
Tip 11: Use a .js file to Cache Scripts
Tip 12: Use jQuery as a Framework
Tip 13: Implement Event Delegation
Implementing Event Delegation makes it easier to use a single event handler that can help in the efficient management of a type of event for the entire page efficiently. Without using Event Delegation, large web applications halt due to the presence of several event handlers. Event Delegation has many advantages like less functionality to manage, fewer ties between DOM and code, and less memory required to process.
Tip 14: Avoid Using too Much Memory
Tip 15: Use Tools to Detect Problems
The “More Tools” option in Chrome’s main menu shows the memory and the CPU used by each tab. In case you want to carry out a detailed analysis, you can use the developer tools “Performance” view in either Chrome or Firefox and analyze various metrics. When the page is loading, developer tools performance analysis allows you to simulate CPU consumption, network, and other metrics at a time. This helps you to identify and fix problems seamlessly.
Moreover, you must opt for Navigation Timing API as it determines and measures which part of your code takes from the programming itself.
May 11, 2020