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Lighthouse performance scoring  | Chrome for Developers
How metric scores are determined Once Lighthouse has gathered the performance metrics (mostly reported in milliseconds), it converts each raw metric value into a metric score from 0 to 100 by looking where the metric value falls on its Lighthouse scoring distribution. The scoring distribution is a log-normal distribution derived from the performance metrics of real website performance data on HTTP
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原文：“There is no simple solution for local storage†(on March 5, 2012 by Chris Heilmann) è¦ç´„：ç§ãŸã¡ã¯è‰¯ã„データストアã¨ã—ã¦Â localStorage を推奨ã™ã‚‹ã®ã‚’ã‚„ã‚ãªã‘ã‚Œã°ãªã‚‰ãªã„。パフォーマンスãŒã²ã©ãæãªã‚れるã‹ã‚‰ã 。ã—ã‹ã—残念ãªã“ã¨ã«ã€ä»£ã‚ã‚Šã¨ãªã‚‹ã‚‚ã®ã¯ã¾ã 完全ã«ã‚µãƒãƒ¼ãƒˆã•ã‚Œã¦ãŠã‚‰ãšã€ã¾ãŸç°¡å˜ã«å®Ÿè£…ã§ãã‚‹ã‚‚ã®ã§ã‚‚ãªã„。 Web 開発ã«ãŠã„ã¦ã€ã†ã¾ã™ãŽã‚‹è©±ã«å‡ºãã‚ã™ã“ã¨ã¯å¸¸ã€…ã 。ãã†ã„ã£ãŸã‚‚ã®ã®ã„ãã¤ã‹ã¯è‰¯ã„ã‚‚ã®ã§ã€ã ã‹ã‚‰ã“ããã‚ŒãŒã€Œã™ã¹ã¦ã€ã¨ã—ã¦ç›®ç«‹ã£ã¦ã—ã¾ã„ã€é–‹ç™ºè€…を使ã†ã‚ˆã†ã«ä»•å‘ã‘ã¦ã—ã¾ã†ã€‚ã—ã‹ã—ã€å¤šãã®å ´åˆã€è‰¯ã„ã¨æ€ã‚ã‚Œã¦ã„ãŸã‚‚ã®ã¯ãã“ã¾ã§è‰¯ã„ã‚‚ã®ã§ã¯ãªã„。ã¾ãŸã€ã—ã°ã‚‰ã使ã£ã¦ã¿ã¦ã¯ã˜ã‚ã¦ã€Œé–“é•ã£ã¦ã„ãŸã€ã¨æ°—ã¥ã‹ã•ã‚Œã‚‹ã‚‚ã®ãªã®ã 。 ãã‚“ãªã‚‚ã®ã®ã²ã¨ã¤ã«ã€localStorage ãŒã‚ã‚‹
Reflows & Repaints: CSS Performance making your JavaScript slow? – Nicole Sullivan
Reflows & Repaints: CSS Performance making your JavaScript slow? I’ve been tweeting and posting to delicious about reflows and repaints, but hadn’t mentioned either in a talk or blog post yet. I first started thinking about reflows and repaints after a firey exchange with Mr. Glazman at ParisWeb. I may be stubborn, but I did actually listen to his arguments. 🙂 Stoyan and I began discussing wa
Gmail for Mobile HTML5 Series: Reducing Startup Latency
On April 7th, Google launched a new version of Gmail for mobile for iPhone and Android-powered devices. We shared the behind-the-scenes story through this blog and decided to share more of what we've learned in a brief series of follow-up blog posts. This week, I'll talk about how modularization can be used to greatly reduce the startup latency of a web app. To a user, the startup latency of an HT
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Introducing Page Speed mobile analysis, on Google Chrome for Android- Google Developers Blog
Learn web development  | web.dev
Learn web development  | web.dev
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