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24 lip 2024 · An application can use the timing metrics to determine, for example, the length of time it takes to load a specific resource (such as an image or a script) either implicitly as part of page load or explicitly from JavaScript, for example using the fetch() API.
Resource loading: onload and onerror. The browser allows us to track the loading of external resources – scripts, iframes, pictures and so on. There are two events for it: onload – successful load, onerror – an error occurred.
23 cze 2009 · If you're just trying to get a javascript function called once per-view (and not necessarily after the DOM is finished loading), you can do something like this: <img src="javascript:location.href='javascript:yourFunction();';">
12 paź 2024 · The PerformanceResourceTiming interface enables retrieval and analysis of detailed network timing data regarding the loading of an application's resources. An application can use the timing metrics to determine, for example, the length of time it takes to fetch a specific resource, such as an XMLHttpRequest , <SVG> , image, or script.
25 paź 2024 · Navigation timings are metrics measuring a browser's document navigation events. Resource timings are detailed network timing measurements regarding the loading of an application's resources.
One crucial aspect of JavaScript that developers must understand is managing resource loading. This guide delves into the methods onload and onerror, providing clear examples and practical tips to efficiently handle resources like images, scripts, and more.
Document and resource loading. Page: DOMContentLoaded, load, beforeunload, unload. Scripts: async, defer. Resource loading: onload and onerror. Ctrl + ← Ctrl + →.
