preload

问题 I'm currently rendering a child component when a signInError occurs. The signInError is stored in the parent component and if it's not null, it renders the <SignInError/> component, as per the code below: ParentComponent.js // Some code... render() { return( <div> <SignInForm doSignIn={this.doSignIn} resetSignInError={this.resetSignInError} signInError={this.state.signInError} /> {this.state.signInError && <SignInError/>} </div> ); } So far, so good, here's the child component SignInError.js

问题 I have a large JSON blob I would like to have preloaded with my webpage. To do this, I have added <link rel="preload" as="fetch" href="/blob.json"> to my page. I also have a JS request to fetch the same blob. This does not work, and the console reports: [Warning] The resource blob.json was preloaded using link preload but not used within a few seconds from the window's load event. Please make sure it wasn't preloaded for nothing. MDN claims that this can be fixed by adding crossorigin to the

问题 Preload and prefetch are both used to request resources in advance so that later resource loading can be quick. It seems that I can interchange the two <link rel="preload" href="foo.js" as="script"> <link rel="prefetch" href="foo.js"> without noticing anything difference. What are their differences? 回答1: Addy Osmani wrote an article that goes into the details of this, but the short version is: preload is a declarative fetch, allowing you to force the browser to make a request for a resource

问题 I have a JSON file referencing about 300 images used in an animation displayed within my Wordpress theme. In my header.php, I'm using the following jQuery to preload all images on DOM load. function preload(images) { jQuery(images).each(function () { jQuery('<img />').attr('src',this).appendTo('body').css('display','none'); }); } jQuery(document).ready(function() { preload([ "<?php bloginfo('template_directory'); ?>/library/images/img001.jpg", "<?php bloginfo('template_directory'); ?>/library

问题 I have a JSON file referencing about 300 images used in an animation displayed within my Wordpress theme. In my header.php, I'm using the following jQuery to preload all images on DOM load. function preload(images) { jQuery(images).each(function () { jQuery('<img />').attr('src',this).appendTo('body').css('display','none'); }); } jQuery(document).ready(function() { preload([ "<?php bloginfo('template_directory'); ?>/library/images/img001.jpg", "<?php bloginfo('template_directory'); ?>/library

问题 Hey i have a question that seems very tricky. I want to add images for every Infowindow in my map. But the clue is that the images shouldn't parse directly from the XML, because if there are 300 markers and for every marker an image, that would by a very big data which have to load on mapstart. Is it possible to load the image only if the marker has cliked ? Heres my code: <script type="text/javascript"> var side_bar_html = ""; var sidebarMarkers = []; var infoWindow = new google.maps

问题 Some context, I am running a script on a website's home page to swap background images on a timer. We decided it would be better to attempt to implement preloading of the images, which prompts the following issue in Firefox: Preloading images on the first page load will not prevent the browser from loading the image from the original source again instead of the cache. Oddly though, refreshing the page will successfully cause the image to be loaded in from the cache. The JavaScript that runs

问题 I am currently doing some animation (smooth zooming & panning) in OpenLayers using ol.animation, but sometimes those animations are too fast to show smooth zooming (tiles do not load fast enough) - which is expected behaviour. But animation on my page starts only after viewer reads whole post (~1min), so I thought I could preload tiles that are needed for the animation in this time of inactivity. Is there possibility to preload tiles of a layers/map? I was thinking some solutions: Create

问题 I am helping to develop an angular2 web app using webpack, and our current plan is to open up some sort of file for configuring the functionality of our application (.json probably). This would mostly be to give the people implementing our app an easy-to-locate file to specify things like: where their API is located, if they want to add custom stylesheets, etc. The service I'm using to load my config file looks like this: //config.ts @Injectable() export class Config { private static _config:

问题 I would like to use this gallery in my website. The only issue is that when clicking next to load the picture, it takes a lot of time. I would like to preload the next two images, when the user clicks the image to enlarge it. I came across this solution but it's manually coding the image names, but my images are loaded dynamically. Is there any other way I can do it? 回答1: Here's a simple-ish solution. You can add a click event to the thumbs so that when one is clicked it preloads the next