[Javascript] Cancel a promise let getUrl = url => listener =>{ let controller=newAbortController() let signal=controller.signal fetch(url, {signal}) .then((response)=>{returnresponse.json() }).then(listener)return() =>{ controller.abort() } } let cancel= getUrl("https://api.github....
The AbortController interface enables us to cancel a one or more DOM requests. In this lesson, we will demonstrate how to use the controller to cancel a Javascript Promise before it is resolved. constcontroller =newAbortController();constsignal = controller.signal; The controller only has one met...
let getUrl = url => listener =>{ let controller=newAbortController() let signal=controller.signal fetch(url, {signal}) .then((response)=>{returnresponse.json() }).then(listener)return() =>{ controller.abort() } } let cancel= getUrl("https://api.github.com/users/zhentian-wan")(conso...
代码语言:javascript 代码运行次数:0 运行 AI代码解释 'use strict';varCancel=require('./Cancel');functionCancelToken(executor){if(typeofexecutor!=='function'){thrownewTypeError('executor must be a function.');}varresolvePromise;this.promise=newPromise(functionpromiseExecutor(resolve){resolvePromise=reso...
Vue 中“Uncaught (in promise) cancel”错误的解决方案 1. 解释“uncaught (in promise)”错误的含义 “Uncaught (in promise)”错误表明在JavaScript的Promise链中有一个错误没有被捕获。当Promise被拒绝(rejected)时,如果没有相应的.catch()方法来处理这个拒绝,就会抛出这个错误。 2. 阐述在Vue中出现此错误的可...
Fortunately, JavaScript offers a very handy piece of functionality for aborting an asynchronous activity. In this article, you can learn how to use it to create your own cancel async function.# Abort signalThe need to cancel asynchronous tasks emerged shortly after introducing Promise into ES2015 ...
JavaScript functioncancelHandler(ev){if(xhrPromise !=null) { xhrPromise.cancel(); } } Start the app in debug mode. You should see theStartbutton and theCancelbutton. If you clickStart, the HTTP request is started asynchronously, and if it succeeds you should see the DIV turn green and ...
"Promise Aborted" : "Promise Rejected"); } Now in your async function, you can react to abort event and stop doing whatever it was doing: function somethingAsync({signal}){ if (signal?.aborted){ return Promise.reject(new DOMException("Aborted", "AbortError")); } return new Promise((...
Another example is foraborting promises. This is a relatively simple and self-documenting method... But in fact, it is not necessary to AbortController to achieve this function, as long as you find a way to get the promiserejectjust fine. I think the point of this example is to learn to...
Attempts to cancel the fulfillment of a promised value. If the promise hasn't already been fulfilled and cancellation is supported, the promise enters the error state with a value of Error("Canceled").SyntaxJavaScript Copia promise.cancel(); ...