Book Image

Mobile Web Performance Optimization

By : S. S. Niranga
Book Image

Mobile Web Performance Optimization

By: S. S. Niranga

Overview of this book

With users increasingly accessing the web on mobile devices, it’s crucial to make sure your website is built to seamlessly fit this radical change in user behavior. Mobile Web Performance Optimization is designed to help you do exactly that – it’s been created to help you build fast, and mobile-user-friendly websites and applications. Featuring guidance through a range of techniques and tools essential to modern mobile development, this accessible guide will make sure you’re delivering a seamless and intuitive experience for your website’s users. Begin by exploring the fundamental components of mobile web design and website optimization, before learning how to put the concepts into practice. Featuring cross-platform solutions, insights on developing lightweight yet robust UI, and insights on how to successfully manage data, this application development book takes you through every stage in the development process – so you can be confident that you’re asking the right questions and using the best tools in the most effective way. By the end, you’ll understand implicitly what it means to ‘build for performance’- you’ll be a more confident developer, capable of building projects that adapt to a changing world.
Table of Contents (14 chapters)
Mobile Web Performance Optimization
Credits
About the Author
About the Reviewer
www.PacktPub.com
Preface
Index

File order of external style sheets and scripts


When we render a page, the order of the CSS and JavaScript's files that are located in the code have a direct impact on how quickly that we can show the page to the user. If we can load the CSS files before the JavaScript files, the page can start the rendering straight away, and we can download other files parallel to the rendering which increase the website rendering speed.

On the other hand, if we wait to download CSS files after the JavaScript files, the website will have to wait until all the JavaScript files get downloaded to start the page rendering. Another issue with this is that if a JavaScript code has a CSS code dependency, there will be a conflict.

To minimize the impact, the recommended method is to load the style sheet files first, then push the scripts to the bottom of the page as much as possible.