loading | 易学教程

How to display a loading screen while site content loads

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问题 I'm working on a site which contains a whole bunch of mp3s and images, and I'd like to display a loading gif while all the content loads. I have no idea how to achieve this, but I do have the animated gif I want to use. Any suggestions? 回答1: Typically sites that do this by loading content via ajax and listening to the readystatechanged event to update the DOM with a loading GIF or the content. How are you currently loading your content? The code would be similar to this: function load(url) {

让 axios 支持 finally

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当我们执行一个 promise 操作时，往往伴随的是要做各种状态的修改（如请求开始时显示 loading ，结束时隐藏 loading ）, 这个状态修改，如果没有 finally 函数，我们需要在 then 和 catch 中都写入这段代码，但是有了 finally 函数，我们只需要把这段代码写入函数中即可，因为 finally 函数中的逻辑，请求完成之后无论是成功失败都会被执行如何支持安装包 promise.prototype.finally npm i promise.prototype.finally -S使用时引用即可 require("promise.prototype.finally").shim(); 来源： https://www.cnblogs.com/luobiao/p/11344469.html

UIWebView finished loading Event

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问题 Is it possible to start an event when an UIWebView (Iphone) has finished loading the URL. How can I find out, the current URL of the UIWebView? 回答1: Yes, that's possible. Use the UIWebViewDelegate protocol and implement the following method in your delegate: - (void)webViewDidFinishLoad:(UIWebView *)webView If you want the URL, you can get the last request using the property request : webView.request.URL 回答2: None of the found solutions worked for me. Then I found this example which at least

C/C++ Image Loading [closed]

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问题 I'm working on a game engine and I'm too much of a wuss to write image loaders for multiple formats, so my question is this: Is there an abstracted image loading library to load image files? I just need to load files then splat them on to the screen using an array of pixels. 回答1: I'm always a fan of CImg. It's very easy to use. Another user liked the answer as well. I'll post the same example I posted in the answer so you can see how easy it is to access pixels and dimension info. CImg

How can I display a loading control while a process is waiting for be finished?

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I decided to use this third-party component to make a simple loading control in my windows form. http://www.codeproject.com/Articles/14841/How-to-write-a-loading-circle-animation-in-NET This works fine when turns on and off changing the property "Active" to true or false in a single request (one per time). The problem is when a process is waiting to be served, and I pretend to Active the loadingControl before the process starts and turn off when I "think" that the process has to be finished. When I do it, the image loading is shown as a static image. (Without animation). I'm sorry for this

Load 1000 images smartly

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问题 I have like 1000 images on the same page. Unfortunately, I can't use sprites on them, as the number of images increases continuously. So you can imagine it sends 1000 HTTP requests, so it takes lots of time for the images to load plus it's not good experience for the visitors. I have seen one of the scripts named as Lazy Load , but I was thinking if there is a smarter way of loading images (good regarding SEO, loads images faster and is good for user experience). Is there a way out to load

Are .dll files loaded once for every program or once for all programs?

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问题 I have a simple small question which someone who knows will be able to answer easily, I searched google but couldn't find the answer. There are many programs running at once on a computer, and my question is: when a program loads a DLL, does it actually load the DLL file or does it find the memory in which the DLL is already loaded? For example, is ws2_32.dll (winsock 2) loaded for every program that uses winsock, or is it loaded once and all programs that use it use the same memory addresses

Loading bar while script runs

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问题 I have a php script which takes about 10 seconds to run because it is pulling in data and storing it in the db, I want to display a loading bar whilst this script is running and then once its done load the page the user is on...has anybody any ideas how I can do this? Thanks 回答1: At first you need to call the script using an Ajax request. All jQuery ajax methods offer function callbacks that are called when the call is completed. You can show the progress bar when you make the request and

Javascript Code works in jsfiddle and but not in the Browser [closed]

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I have tried searching similar problems but have not been able to find the reason why my code works in jfiddle but not in a browser. I have also tried making a copy of my code from jfiddle to another fiddle project and the code doesn't work in the new project. You can find my project here . I am making a interactive food game where someone picks a food item, example acorn squash and then the user can drag that image around. My first attempt was pasting the code within the head. <script language="JavaScript"> code </script> Do I need an onpage load event? Does the javascript need to be put in a

What's the difference between : 1. (ajaxStart and ajaxSend) and 2. (ajaxStop and ajaxComplete)?

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问题 Basically that's the question (parentheses are important) 回答1: .ajaxStart() and .ajaxStop() are for all requests together , ajaxStart fires when the first simultaneous request starts, ajaxStop fires then the last of that simultaneous batch finishes. So say you're making 3 requests all at once, ajaxStart() fires when the first starts, ajaxStop() fires when the last one (they don't necessarily finish in order) comes back. These events don't get any arguments because they're for a batch of