What is Lazy Loading in Programming?

A lot of people know that making a website load faster is important for conversion rate optimization. However, many designers and developers are not aware that there are actually different ways to do this! One way is by using lazy loading. In this article, we will discuss what lazy loading is and how it can help improve site speed.

Lazy Loading in Web Development

Lazy loading involves delaying the loading of images, scripts, etc until they come into view on the page.

Image Lazy loading is a technique that loads images when they are visible to the user rather than before. This means that if you have a lot of images on your website, instead of downloading all the images at once, they download as needed in order to maintain fast page load times. The end result is an improved conversion rate for your customers because more pages are able to load quickly!

Lazy loading can be done in two ways: either by using JavaScript or CSS. The most popular lazy loading solution is the one that uses JavaScript, but both are great options to improve site performance.

Lazy loading with JavaScript involves adding classes and event handlers to images on your page. This will ensure they only load when needed so you don’t have any unnecessary lag time while waiting for all of them to download at once (which would result in a longer wait before anything appears).

A great example where lazy loading has been implemented can be found on YouTube videos; when the user clicks the play button, the HTML video player will show around 30% of the video without downloading the whole clip. As the user scrolls down/up the site browser window more parts are loaded automatically and finally 100% view.

Lazy Loading in Software Development

In software development, lazy loading is a technique used in programming languages to defer the initialization of an object until its first-time use. It may also refer to the delayed loading of data from external sources such as databases and file systems into memory. Another definition for this term could be when you load only what’s needed on a web page or app screen instead of all content at once.

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