xmlhttprequest

问题 I am trying to implement a simple request to Wikipedia's API using AJAX (XMLHttpRequest). If I type the url in the address bar of Firefox, I get a neat XML, no sweat there. Yet, calling the exact same url with: // this is my XMLHttpRequest object httpObjectMain.open("GET", "http://en.wikipedia.org/w/api.php?action=query&format=xml&prop=langlinks&lllimit=500&titles=kaas", true); httpObjectMain.send(null); returns an empty response. According to FireBug, I get a 200 OK response, but the content

问题 I have a page that sends an XHR request when a form is submitted and I would like to get Chrome to break when it receives a response. It seems like the best way to accomplish this would be if Chrome has a javascript function that I can call that breaks execution but I've been unable to find anything like that so far. Is there another solution? Edit : I don't actually have a callback defined for the request so I can't set a breakpoint that way. The request is being sent with this line of

问题 Just wanted to know what is the best elegant way (currently available) to handle CORS (Cross-Origin Resource Sharing) in ASP.NET WebAPI so i can use XmlHttpRequest over multiple domains ? How i can integrate this in the headers of every type of request (GEt, POST, etc..) with OPTIONS too ? Thanks! 回答1: Tpeczek have a nice found, however while doing my own research ive found something similar and also very elegant ways of handling CORS which enable you to configure your CORS in a config file

问题 I'm using angular 1.1.5 and I'm using a $resource to make a XHR to a REST service but it seems like the the $resource isn't appending the header as X-Requested-With as XMLHttpRequest, is that a normal behavior? and Do I need to append the header manually? function loginCtrl($scope,$resource) { $scope.submit = function () { var resource = $resource('/Api/User/login', {}, { authenticate: { method: 'POST', isArray: false, headers: { '__RequestVerificationToken': $scope.loginRequest.Token } } });

问题 I'm trying to scrape the following webpage http://www.bseindia.com/markets/equity/EQReports/StockPrcHistori.aspx?flag=0&expandable=7 The search box (which says Enter Scrip Name / Code / ID) , is where I am having difficulty, I am able to set the value of the box to the scrip ID 500222 by using the following code, IE.Document.All.Item("ctl00$ContentPlaceHolder1$GetQuote1_smartSearch").innerText = "500222" However if you try entering the value 500222 in the search box manually you will get a

问题 I've got a classic asp app that needs to post XML to a payment engine, and the reference code uses a System.Net.HttpWebRequest object (asp.net). Is there an equivalent in Classic ASP that I could use to post the XML? 回答1: Heres a little helper function I use for making HTTP requests in ASP. Its in JScript but you should get the idea at least and some pointers of some nasty gotcha's that we've had to iron out over the years. <% /* Class: HttpRequest Object encapsulates the process of making an

问题 When I perform an XHR on our production system, the statusText in the response will be an empty string. However, on our development system, the statusText will reflect the status correctly. According to the documentation for XMLHttpRequest.statusText, it should only be empty while the request is being processed. However, I am seeing this behavior in the onload handler. Additionally, this behavior can only be observed in Chrome and Edge. Firefox will display the correct text. So, how is the

问题 I have an index.php file that loads other php files via this javascript/ajax code: function AJAX(elementID,url,showStatus){ var httpObject; if (window.ActiveXObject) { httpObject = new ActiveXObject("Microsoft.XMLHTTP"); } if (window.XMLHttpRequest){ httpObject = new XMLHttpRequest(); } else { alert("Your browser does not support AJAX."); } if (httpObject != null) { httpObject.onreadystatechange = function() { if (elementID != false){ if (httpObject.readyState == 4 && httpObject.status == 200

问题 Browsers have a per-host limit regarding number of parallel XHR (about 6 nowadays). Does this restriction apply to multiplexed HTTP/2 connections? 回答1: Browsers impose a per-domain limit of 6-8 connections when using HTTP/1.1, depending on the browser implementation. This allows at most 6-8 concurrent requests per domain. With HTTP/2, browsers open only 1 connection per domain. However, thanks to the multiplexing feature of the HTTP/2 protocol, the number of concurrent requests per domain is

问题 I have problem with WinJS.xhr when developing a Windows 8 Metro application in JavaScript. WinJS.xhr({ url: "http://www.seznam.cz"}); When above code is executed, I see in log: SCRIPT7002: XMLHttpRequest: Network Error 0x2efd, Could not complete the operation due to error 00002efd. I have enabled "Internet (Client)" capability in manifest. Maybe the problem is because I am behind proxy and using VPN, but I can access internet using Google Chrome (I just need to authorize, otherwise HTTP