It's easy to output and find out xmlhttp.status=0 There is no such status code in the HTTP protocol. Found inside â Page 253Status: 0 .T Figure 8-4. Notifying the user that the XMLHttpRequest failed However, if all went well with the request, the method retrieved takes over. Changes from 0 to 4: 0: request not initialized 1: server connection established 2: request received 3: processing request 4: request finished and response is ready: status: 200: "OK" 404: Page not found It works pretty well with IE, but with Firefox, the XmlHttpRequest object's status comes to 0 (Not 200 as in IE) - So, I am not getting it to work. To designer-fixit . Web Languages and Standards JScript AJAX. The OneDrive API supports HTTP access control (CORS) to allow single page JavaScript applications to use the OneDrive API through the common XMLHttpRequest pattern.. You can read more about CORS (Cross-Origin Resource Sharing) on Wikipedia or the W3C CORS Wiki. I’ve been looking for the answer to the question, but when I asked some of them, I just gave them the answers that came with Baidu. Found inside â Page 242... status == 0) { name = document.all("myLogin").value; xmlHttp.open("GET", "ajax.php?login=" + name, true); xmlHttp.onreadystatechange = ResponseHandler; ... i had another requirement of extracting data from webpage and i tried the below code and it takes around 3-4 seconds for one record , how can i change this to module format USING MSXML2.XMLHTTP It is worth noting that browsers report a status of 0 in case of XMLHttpRequest errors too. The problem is returning status = 0 . The XMLHttpRequest object is the key to AJAX. Found inside â Page 214createElement(âmarkersâ)); countLength = globalCount=0; var photoid = new ... readyState == 4) &&( xmlhttp.status == 200)) { var xmlobject = var photos ... When readyState is changed, call the onreadystatechange function. Despite its name, XMLHttpRequest can be used to retrieve any type of data, not just XML, and it supports protocols other than HTTP (including file and FTP). 3. The XMLHttpRequest.readyState property returns the state an XMLHttpRequest client is in. Found inside â Page 13XMLHttpRequest) { xmlHttp = new XMLHttpRequest(); function updatesotal() { frm ... readyState==4 && xml.http. status == 200) { document.forms[0]. Although I visited it, it should be because the browser’s cross domain return header is not allowed, so the browser blocks the access control allow origin attribute. The Fetch API is now available in browsers and makes cross-origin requests easier than ever. 情况二：. It was ridiculous how simple mistakes in javascript make you dumb. The status attribute must return the result of running these steps: The status value must return the result of running these steps. The main difference is that the Fetch API uses Promises, which enables a simpler and cleaner API, avoiding callback hell and having to remember the complex API of XMLHttpRequest. For more information, visit the section about XMLHttpRequest.. Running the Example. OK. XMLHttpRequest status = 0 problem. To answer the question of why http://127.0.0.1/cd_catalog.xml works while http://localhost/cd_catalog.xml doesn’t: Firefox is treating 127.0.0.1 and localhost as two different domains. javascript – Align Absolutely Positioned Sticky Element to div inside Sibling? Disclaimer: The information provided on DevExpress.com and its affiliated web properties is provided "as is" without warranty of any kind.Developer Express Inc disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. This answer and that has more information about that. A null body status is a status that is 101, 204, 205, or 304. C#. Found inside â Page 89Activexobject ) { xmlhttp = new Activexobject ( " Microsoft. ... if ( inputField.value . length > 0 ) { createXMLHttpRequest ( ) ; var url ... (ie http://localhost/myfile.html) This is the solution. Found inside â Page 888