preload

问题 I'm working on a jquery based homepage with 5 or so hidden divs, each containing several background css images. The issue is that the browser doesn't load css images into the DOM until the visibility of the parent layer is shown, causing images to slowly load in when the layer becomes visible. Solutions I've already considered: CSS sprites (too much work to redesign for this, and wont really work when showing/hiding divs) This jQuery plugin that auto-loads CSS background images (simply doesn

问题 Im stuck trying to figure out how to pull the information from my pre-populated database that is in my assets folder to display in a tablelayout view. If you know of any clear tutorials or if you know how to do it could you please help me out. Example of what I mean: Database example: Mountains Valleys Rivers Oceans Vermount yes no yes no kentucky no yes yes no South Dakota yes no no no (In the app if I was to display a specific row then the tablelayout should appear like this) TableLayout

问题 We use Prism 4 for WPF as well as the navigation functionality which comes with Prism. When navigating to (loading) certain views in our application we notice a delay - which understandably comes from instantiating the view and its dependencies, this includes loading necessary assemblies from disk. We would like to preload these views at application startup while showing a splash screen or something similar. Has anyone done something similar and would like to share their experiences? 回答1: We

问题 Given this, which preloads an image: $('<img />') .attr('src', 'source') .load(function(){ $('.profile').append( $(this) ); // Your other custom code }); do you know how to do the same but for several images? I tried something like : var img1 = new Image(); var img2 = new Image(); $(img1).attr('src', 'source1'); $(img2).attr('src', 'source2'); $(img1,img2).load( function () { //code after loading } ); but it doesn't work! Any ideas? 回答1: FINAL ATTEMPT As far as I can tell you want to be able

问题 I'm building an online test which implements audio (mp3) using the native audio player ( i.e. non Flash-based). The test shows one question at a time and loads each subsequent question asynchronously. Some questions have an accompanying audio file, others don't, and the audio files can be several MB in size. So what I'm hoping to do is to preload the audio files client-side at the start of the test and then move these into place when the relevant question comes up. So far I've tried loading

问题 My goal is importing fonts by @import url('https://fonts.googleapis.com/css?family=Poppins:i,100,200,300); in my .scss file, then preload all the fonts by preload-webpack-plugin After I deploy my bundle, the google fonts is applied, and the fonts request is like this: Compare to the request utilizing @font-face in the .scss file, get the fonts which I download to local then serve by myself: Only the file name of second one follows the name I defined in file-loader configuration: exports.font

问题 The only setting I've come across for "preload" is "none" - what are the alternetives? I have a long-ish movie that takes a while to start (because of the size, I assume) and I'd like to be able to get it to play more quickly. I reckon that making the video start loading immediately the page loads would give the viewer a quicker response... 回答1: The preload attribute is part of the HTML 5 spec. Steve Souders blog post discusses the allowable values and explains how each browser handles the

问题 I have a large image that displays as a background on another page of my website. I want to preload this image when users first go to my webpage so that when they eventually move to the page with the image on it, it loads instantly. I use this to preload: <script type="text/javascript"> if (document.images) { img1 = new Image(); img1.src = "image.jpg"; } </script> How do I use this so it stores the image to use on a later page? Thanks in advance! 回答1: ANSWER: Turns out if I simply put the

问题 I have this preloadimages function: <script type="text/javascript"> function preloadimages(arr){ var newimages=[], loadedimages=0 var postaction=function(){} var arr=(typeof arr!="object")? [arr] : arr function imageloadpost(){ loadedimages++ if (loadedimages==arr.length){ postaction(newimages) } } for (var i=0; i<arr.length; i++){ newimages[i]=new Image() newimages[i].src=arr[i] newimages[i].onload=function(){ imageloadpost() } newimages[i].onerror=function(){ imageloadpost() } } return { /

问题 I'm making a simple rss reader for the iPhone. The feed (http://feeds.feedburner.com/foksuk/gLTI) contains a reference to images that I want to show in my TableView. By default, as far as I understand, the iPhone only tries to load images when they are needed: it will only load the images for the rows that are displayed. Only when the user scrolls down, it will start loading the ones that need to be displayed. Right? Now, since the images are downloaded from the web (they are not too large,