July 2019
Intermediate to advanced
536 pages
12h 57m
English
Content preview from Learn Selenium
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Capturing page-performance metrics
Measuring and optimizing the client-side performance is essential for a seamless user experience, and this is critical for Web 2.0 applications using AJAX.
Capturing vital information, such as the time taken for page load, rendering of the elements, and the JavaScript code execution, will help in identifying the areas where performance is slow and optimizes the overall client-side performance.
Navigation Timing is a W3C-Standard JavaScript API to measure performance on the web. The API provides a simple way to get accurate and detailed timing statistics natively for page navigation and load events. It is available on Internet Explorer 9, Google Chrome, Firefox, and WebKit-based browsers.
The API is accessed ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.