preload

问题 I have a 10 second video clip, and a full video that the video clip is from on my site. the 10second video is set to (autoplay, preload=auto, and muted), and the full video is set to (preload=none) and is set to only load when clicked. the videos are both .mp4. I publish my site to IIS on my computer, and I go to localhost, and the site will load fine. The 10second video loads fine on my video carousel, but when I click it to go to the dedicated page about the video the 10second video will

问题 What is a right way to preload Rails model in development mode? Background: Rails 2.2, memcahe as cache store. When Rails start in production mode first of all it preload and cache all models. In development mode it use laizy loading. That's why wen we store any model into rails cache, for example, Rails.cache.write("key", User.find(0)) on next loadind of app, when we try do Rails.cache.read("key") memcache fire, that User is unknown class/module. What is a right way to preload class in this

问题 So I'm building a website that will use a lot of animated GIF's on mouse hover. There will be a lot of images, and I only want to load the images that will be used on any given page. It's using WordPress so I can use the conditional tags to only put out the URL's of the images I need on a certain page. My problem was how to tell the browser/server which images needed to be preloaded. I decided to add a HTML5 data attribute to the containing element. For example, I would have a DIV with this

问题 I'm currently developing a mobile website which is heavy on the images, css and javascript (it uses a library which is 150KB uncompressed for example). I've constructed a preloader for the images which works rather nicely: function loadImages(images){ var sum = 0; for(i in images){ sum += images[i][1]; // file size } setMaxProgress(sum); for(i in imageArray){ var img = new Image(); img.onload = function(){ addProgress(imageArray[i][1]); }; img.src = imageArray[i][0]; } } However I would now

问题 At my work, we are developing different applications using .net framework 4. All the applications use common assemblies that we developed, for example the data layer in data.dll. These applications reside on a network drive and are launched directly from there. Most big applications take a while, like maybe 4-5 seconds, to launch the first time (cold startup). The subsequent launches are much faster, almost instantaneous. I don't think it has to do with the network, since the biggest assembly

问题 I created a jsfiddle for my current code. http://jsfiddle.net/gL5sB/38/ I am trying to change the body background css on scroll event. When the background changes it appears to flicker when the css is updated and new image is loaded. At times it seems smooth and then it seems to get worse. Very strange. Curious if anyone knows how to optimize? I am preloading the images. Not sure why the flicker. Any ideas? $(document).ready(function () { switchImage(); }); $(window).scroll(function () {

问题 I have many div.image , each one has a huge size. How do I append a loader image when the div background is loading and remove the loader image after the background finished loading? $('.image').append('<img src="image/loading.gif" class="loading" />'); <div class="image" style="background:url(https://lh3.googleusercontent.com/-3prblPgZ3n4/To9btWmWSFI/AAAAAAAAB2c/Ojs-7Ql3r6w/s720/DSC_2120.JPG) 0 0 no-repeat;width:720px;height:478px;overflow:hidden;"></div> 回答1: $('.image').append('<img src=

问题 I have a website that plays sound when you click a button. This is how I do it function PlaySound(soundfile) { $('#soundContainer').html("<embed src='/uploads/sounds/" + soundfile + "' hidden=true autostart=true loop=false>"); } How do you preload the sound file beforehand? Thank you. 回答1: just thinking in the top of my head, can you make an ajax request for the sound file, but dont show the button until file is 100% loaded. $(document).ready(function() { $.ajax({ url: "soundfile.mp3",

问题 I am trying to pre-load font-awesome to improve my page load times: <link rel="preload" as="style" href="//maxcdn.bootstrapcdn.com/font-awesome/4.3.0/css/font-awesome.min.css"/> <link rel="preload" as="font" type="font/woff2" href="//maxcdn.bootstrapcdn.com/font-awesome/4.3.0/fonts/fontawesome-webfont.woff2?v=4.3.0"/> However...Chrome seems to download the font twice and reports The resource http://maxcdn.bootstrapcdn.com/font-awesome/4.3.0/fonts/fontawesome-webfont.woff2?v=4.3.0 was

问题 I have a situation where I need to decide to include a html link based on client side boolean value and server side boolean value like this : const preloadSupported = () => { const link = document.createElement('link'); const relList = link.relList; if (!relList || !relList.supports) return false; return relList.supports('preload'); }; if (!@Model.oldLayout && preloadSupported()) { <link rel="preload" href="staticResource.js" as="script" /> } or if (@Model.oldLayout) //server side boolean {