Search Results for "dom"

Nightwatch.js is an automated, easy to use End-to-End testing framework written in Node.js and using the W3C WebDriver API. It uses the WebDriver API to drive browsers, enabling commands and assertions on DOM elements. Nightwatch.js is used for end-to-end testing of web applications and websites, as well as for Node.js unit and integration testing. It offers a clean yet powerful syntax for quick and easy writing of tests, a built-in command-line test runner, continuous integration and more. It's also easy to extend so you can implement custom commands and assertions.

LazyLoad is a fast, lightweight and flexible script that speeds up your web application by loading images only as they enter the viewport. LazyLoad supports responsive images. LazyLoad is a lightweight (2.4 kB) and flexible script that speeds up your web application by deferring the loading of your below-the-fold images, animated SVGs, videos and iframes to when they will enter the viewport. It’s written in plain “vanilla” JavaScript, it leverages the IntersectionObserver API, it supports...

...By averaging data across multiple page loads, Hiper helps developers understand whether performance optimizations actually improve real-world page loading behavior. The tool relies on browser performance timing data to capture metrics such as DNS lookup time, TCP connection time, time to first byte, download duration, DOM readiness, and total page load time. Hiper runs from the command line and can be installed globally using Node.js package managers, making it simple to integrate into development or testing workflows.

...The tool helps developers monitor JavaScript memory behavior directly inside a web page during development or debugging. It works by creating a MemoryStats instance, adding its display element to the DOM, and updating it regularly with requestAnimationFrame. For more precise results, Chrome should be launched with the precise memory information flag, because default memory values may be bucketed. The project is useful for performance debugging, visual memory monitoring, and quick inspection of memory behavior in browser-based experiments.