The DOMContentLoaded event fires right when the HTML document is completely loaded and parsed, not including CSS style sheets, images, and frames. The blue refers to the time when the event DOMContentLoaded is fired the purple line refers to the time when the page’s load event is fired. Request TimelineĮach request in the network list has a timeline column which displays timing information related to the request, such as the total time taken to load the resource.ĭevTools marks major life-cycle events in the report, like DOMContentLoaded, and page load. The Network panel shows you when principal events are fired ( DOMContentLoaded and load).
You can also use this tool to monitor and single out requests that are slowing or blocking the web page’s fast loading. In a nutshell, this tool can be used to determine how long the browser takes to download different assets of a web page. You can also use it to perform, display and save a performance analysis of the current page load. It can also display request-related HTTP headers, HTTP responses and cookies, and let you search through them. Rewrite PerformanceEventTiming page mdn/content 8 hours agoįix a case in the title mdn/content 8 hours agoįix a summary of the article mdn/content 10 hours agoĬhore(deps): bump from 1.18.78 to 1.18.The Network Monitor shows you a tabular view of all network requests that Firefox made (for example, when it’s loading a page, or sending XMLHttpRequests, Fetch API requests etc.). MDN Plus now available in more regions 6 months agoįix type check in Error.toString mdn/content an hour agoĬorrect presentation of content_security_policy in release notes 106 mdn/content 2 hours ago Merging two GitHub repositories without losing commit history 2 months ago The 100% Markdown Expedition a month ago The examples provided should give you some clear ideas about what you can do with canvas, and will provide code snippets that may get you started in building your own content. This tutorial describes how to use the element to draw 2D graphics, starting with the basics.
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