//对ios设备的dpr进行判断,安卓统一设定为1 var dpr= isIPhone ? Math.min(win.devicePixelRatio, 3) : 1; scale = 1 / dpr; var docEl = document.documentElement; var metaEl = doc.createElement('meta'); //设定dpr和meta docEl.dataset.dpr = dpr; metaEl.setAttribute('name', 'viewport'); ...
PrefaceDemand background:Goal: Turn the content of the page into a picture to sharePersistence: No server-side storage requiredClient capabilities:...
), you can get CrUX performance data for specific pages instead of just the aggregates. This data can be much more useful for setting performance targets for assets like “landing page” or “product listing”. And if you are using CI to test the budgets, you need to make sure your...
have some kind of error. If there is an error, run UdacityFEGradingEngine.debug(); from the console to see why the yellow tests are erring. You can find an options page in chrome://extensions. Use the options page to see and modify the list of domains on which the extension will ...
最后,请记住单页面应用程序中 [CORS请求的性能成本](https://medium.com/@ankur_anand/the-terrible-performance-cost-of-cors-api-on-the-single-page-application-spa-6fcf71e50147)。 ### 交付优化 ### 39. 异步加载 JavaScript 当用户请求页面时,浏览器获取 HTML 并构造 DOM,然后获取 CSS 并构造 CS...
We also will NOT BE UNDERSOLD. Just provide us with a written quote from any US competitor and American Tech Supply will MEET or BEAT their price! Call us at (866) 650-DATA or Click on the Chat Button At the Top of the Page To Talk With Us ...
Only after signing in can you Move, delete & minimize features for a personalized page layout; Follow your favorite Sports A countdown clock to count the time left to a date of your choice. To create your own countdown, for your own date, with your own look and feel, follow ...
“interventions”) that are not OurGovernment. Learn how America's federal, state and local governments work to enact the will of the people, and how President Obama and his administration Home Page Meta DescriptionPBIS: Positive Behavioral Intervention & Supports. OSEP Technical ...
remUnit = font-size of root element / DPR(device pixel ratio). //Assume font-size of root element is 124.2 and DPR is 3. initGeetest ({ ... remUnit:124.2/3; }); zoomEle Pass an element containingzoomCSS property or id selector to scale the coordinates to adpat to the page. Plea...
remUnit = font-size of root element / DPR(device pixel ratio). //Assume font-size of root element is 124.2 and DPR is 3. initGeetest ({ ... remUnit:124.2/3; }); zoomEle Pass an element containingzoomCSS property or id selector to scale the coordinates to adpat to the page. Plea...