If you use Prototype, jQuery, Mootools or YUI you should find a X-Requested-With:XMLHttpRequest header which will do the trick for you. It should be possible to insert whatever header you like with other libraries. At the lowest level, given a XMLHttpRequest or XMLHTTP object, you can set this header with the setRequestHeader method as follows: … Read more
You’re trying to do cross origin resource sharing (CORS). The bad news is that without a server as a middle man there is no way to do this on a normal web page. The good news is that in a chrome extension you can request permission to access any url’s you want. Just put something … Read more
The Cookie header is one of several which cannot be modified in an XMLHttpRequest. From the specification: Terminate [execution of the setRequestHeader method] if header is a case-insensitive match for one of the following headers: Accept-Charset Accept-Encoding Connection Content-Length Cookie Cookie2 Content-Transfer-Encoding Date Expect Host Keep-Alive Referer TE Trailer Transfer-Encoding Upgrade User-Agent Via … or … Read more
// // firefox, ie8+ // var accessor = Object.getOwnPropertyDescriptor(XMLHttpRequest.prototype, ‘responseText’); Object.defineProperty(XMLHttpRequest.prototype, ‘responseText’, { get: function() { console.log(‘get responseText’); return accessor.get.call(this); }, set: function(str) { console.log(‘set responseText: %s’, str); //return accessor.set.call(this, str); }, configurable: true }); // // chrome, safari (accessor == null) // var rawOpen = XMLHttpRequest.prototype.open; XMLHttpRequest.prototype.open = function() { if (!this._hooked) { this._hooked … Read more
I don’t have hard facts, but since you asked for opinions… 🙂 There is a telling issue in Chrome: Too many Web Workers can cause a silent crash (caps ~60-100, according to this bug report). The general problem is Web Workers are resource intensive, at least with v8. Assuming you’re going to end up making … Read more
The code gets the data from nseindia site which comes as a JSON string in responseDiv element. Required References 3 Class Module i have used cJSONScript cStringBuilder JSON (I have picked these class modules from here) You may download the file from this link Standard Module Const URl As String = “http://www.nseindia.com/live_market/dynaContent/live_watch/get_quote/GetQuote.jsp?symbol=ICICIBANK” Sub xmlHttp() Dim … Read more
If lengthComputable is false within the XMLHttpRequestProgressEvent, that means the server never sent a Content-Length header in the response. If you’re using nginx as a proxy server, this might be the culprit, especially if it’s not passing the Content-Length header from the upstream server through the proxy server to the browser.
Try disabling the web security by using the command-line option –web-security=no when running your script. (phantomjs –web-security=no yourscript.js) From the PhantomJS reference (http://phantomjs.org/api/command-line.html): “–web-security=[true|false] enables web security and forbids cross-domain XHR (default is true). Also accepted: [yes|no]
There are few known methods to work around the Same Origin Policy. One popular technique is to use “Script Tag Injection” such as in JSONP. Since the <script> tag is not constrained by the Same Origin Policy, a script on a third-party domain can provide executable code that interacts with a provided callback function. You … Read more
Something like the following code should do the job: xmlhttp.onreadystatechange = function() { if (xmlhttp.readyState === 4) { var response = JSON.parse(xmlhttp.responseText); if (xmlhttp.status === 200) { console.log(‘successful’); } else { console.log(‘failed’); } } }