xmlhttprequest

问题 Actually there many examples and I have used one of them. But it works asynchronous, I mean it is not waiting the function that I called to finish. function ProcessSend() Set oXMLHTTP = CreateObject("MSXML2.XMLHTTP.4.0") Set oXMLDoc = CreateObject("MSXML2.DOMDocument") oXMLHTTP.onreadystatechange = getRef("HandleStateChange") strEnvelope = "callNo="&callNo&"&exp="&exp call oXMLHTTP.open("POST","http://localhost:11883/ServiceCall.asmx/"&posFirm,true) call oXMLHTTP.setRequestHeader("Content

问题 I'm still new to Phonegap and I am working with the Android SDK for some days now. At least I wanted to do a XMLHttpRequest to get data from my server. I knew about the Same Origin Policy before and I asked myself, how this should work with a "native app". I searched the internet and found some topics, where people were telling others, that there is no Same Origin Policy on Phonegap, because it uses the file:// protocol and additionally there is a domain whitelist in it's config.xml . On the

问题 How can I access the raw XHR object from jQuery Ajax? The thing is, the new XMLHttpRequest Level 2 specification provides a sub-property of XHR called upload but apparently jQuery doesn't have it yet. I want to keep using jQuery Ajax but I don't know how to merge the new functionality with current jQuery library. 回答1: In new versions of JQuery the raw xhr object is wrapped in jqXhr Object which doesn't have any reference to the new upload property of the xhr and in the documentation is not

问题 Is it possible to modify the data sent in an Ajax request by modifying the XMLHttpRequest object in the beforeSend callback? and if so how might I do that? 回答1: Yes you can modify it, the signature of beforeSend is actually (in jQuery 1.4+): beforeSend(XMLHttpRequest, settings) even though the documentation has just beforeSend(XMLHttpRequest) , you can see how it's called here, where s is the settings object: if ( s.beforeSend && s.beforeSend.call(s.context, xhr, s) === false ) { So, you can

问题 Im trying to post a form data in js : I have this code : var formData = new FormData(); formData.append("username", "Groucho"); formData.append("accountnum", 123456); formData.append("afile", "2"); var xhr = new XMLHttpRequest(); xhr.open("POST", "http://xxxxx/xx.ashx",true); xhr.send(formData); Formdata according MDN is not available in IE ( or unknown). When I try this in FF : ( i think its fine...). when I try in IE : What is the solution to post form data ( or my data but in objective way

问题 I have a classic ASP website running on a Windows Server 2012 box. One page makes a HTTP request to another application over https using code like this: Sub ShopXML4http(url, inStr, outStr, method, xmlerror) Dim objhttp Set objhttp = Server.CreateObject ("MSXML2.ServerXMLHTTP.6.0") objHttp.open method, url, false If Method="POST" Then objHttp.Send instr Else objHttp.Send End if outstr=objHttp.responseText Set objhttp=nothing End Sub This code works fine almost all of the time (thousands of

问题 I read some AJAX-Form tutorial like this. The tag form is used in HTML code. However, I believed that it is not necessary. Since we send HTTP request through XmlHttpRequest , the sent data can be anything, not necessary input in form . So, is there any reason to have form tag in HTML for AJAX application? 回答1: Apart from progressive enhancement as already discussed (don't make your site require JavaScript until it really has to), a <form> with onsubmit would be necessary to reliably catch an

问题 Is there a way to hide the "XHR finished loading" messages in the console? 回答1: Yes, open the contextmenu in the console, and remove the check at Log XMLHttpRequests . You can still inspect the network traffic at the Network tab. 回答2: There is some workaround posted in chromium issue tracker http://code.google.com/p/chromium/issues/detail?id=15472 Which version of chrome you are using? In my console there is checkbox to enable or diable log XMLHTTPRequests I am using 17.0.963.79 来源： https:/

问题 This question has been asked on here before and given an array of good answers, mainly: Access-Control-Allow-Origin Multiple Origin Domains? However there seems to be a gap in explanation in terms of the approved method that should be undertaken. Reading through the W3 documentation we have what appears to me to be a conflict of guidance. Firstly we see the answer given as the right way to do it in a lot of the previous answers which dictates that the host server must dynamically echo back

问题 I'm making a Chrome extension which pulls data from my own server. It uses about 4 httpRequests at a time, but sometimes I get console error as follows: XMLHttpRequest cannot load http://apps.radionsm.lv/apps/system/index.php?request=now. Origin chrome-extension://egkddfmbidfobhchndockbhjancbpfkd is not allowed by Access-Control-Allow-Origin. for everyone sometimes no. If I send header('Access-Control-Allow-Origin: *'); will this fix it? 回答1: https://developer.chrome.com/extensions/xhr Read