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Performance is the most vital aspect when considering developing a web page or web application. No one wants to visit and stay on a sluggish website these days. As per the latest findings, a 2-sec delay results in an 87% abandonment rate, and a 1 to 5 sec page load time has a probability of a 90% bounce rate.
We have already compared Angular with React and Angular with VueJS and concluded why Angular is best for enterprise app development. However, React and VueJS are both great frameworks and offer great performance even more so than Angular in some aspects. But overall, Angular is a winner in many other aspects too.
Since browsers often use the script to access specific files and objects, performance improvement can immediately be achieved by storing repeated access objects inside user-defined variables. A variable can also be subsequently referenced to those objects.
Following such steps will help you boost the performance of your web applications.
What users want is the initial page load to be quick and, likely, all the functions are not required immediately after the initial load. It can be possible to defer the loading of certain functions until after the initial page load if the user must need to take a certain action for that function to be executed.
Doing so will avoid the loading and compiling of the unnecessary JS code that would delay the initial page load. Once the page is fully loaded, these functionalities can start loading and are made available to users immediately after they start interacting. Google has recommended that this deferred load should be done in the blocks of 50ms to not influence the user’s interaction with the page.
HTTP/2 is a second encrypted version of the main internet protocol that provides you with many cool features. It offers asynchronous download of external files that are most notably the JS files.
Gzip is a compression and decompression software used by most clients and servers. In a Gzip compatible browser when making a request for code files or resources, the server then compresses the response before sending it to the browser.
To avoid this and improve the performance, simply limit the access to DOM. This can be achieved in a few ways such as storing references to the browser objects or decreasing the overall DOM traversal trips.