What is the rocket_lazy Variable?
How Does the rocket_lazy Variable Work?
The rocket_lazy variable when executed goes through a for loop for each of the nodes that were added via mutation. Through the for loop, it will look for elements with the class name ‘rocket-lazyload’; if found, it will add the appropriate lazy load code to the element that was found.
Why is the rocket_lazy Variable Used?
The use of the rocket_lazy variable is to enable lazy loading on certain web page elements. Lazy loading is an optimization technique that enables web developers to improve performance by only loading resources when they are needed. It can be used to delay the loading of images, videos and other elements on a web page.
By adding the appropriate lazy loading code with the rocket_lazy variable, developers are able to optimize their web pages to reduce the amount of time it takes to load, as well as improve user experience by making certain elements load only when needed. This can ultimately lead to better ranking in organic searches, as web page speed and performance are one of the main SEO factors.
What is the purpose of ‘rocket_lazy’ in mutation.addedNodes[i].getElementsByClassName(‘rocket-lazyload’)?
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