javascript - What is AJAX and how does it work? - Stack Overflow
2011年5月15日 · AJAX, or (A)synchronous (J)avascript (A)nd (X)ML (which interestingly enough tends to use JSON more these days), is a system in which Javascript uses a browser object to communicate with a remote server. The general use case of this is to be able to update a client's interface without needing to go to another page.
How do you handle errors from AJAX calls? - Stack Overflow
2016年7月6日 · Doesn't the jQuery ajax function accept one more parameter at the end, a callback for failed calls? If so, just add a fail:function(...){..} after the success callback. Share
javascript - jQuery Ajax File Upload - Stack Overflow
2010年2月24日 · Can I use the following jQuery code to perform file upload using POST method of an ajax request ? $.ajax({ type: "POST", timeout: 50000, url: url, data: dataString, success: fu...
javascript - Making a Simple Ajax call to controller in asp.net mvc ...
2013年4月24日 · @KolobCanyon you're 100% correct. My comment is more referring to rendering the url with razor in the javascript, this tightly couples your javascript with the view (the cshtml). It's a good answer, but to fix the tight coupling you could maybe dump the url into a data attribute in the chstml and read it in the javascript. Sorry for the confusion!
javascript - How does AJAX work? - Stack Overflow
2009年10月2日 · Ajax, which consists of HTML, JavaScript™ technology, DHTML, and DOM, is an outstanding approach that helps you transform clunky Web interfaces into interactive Ajax applications. The author, an Ajax expert, demonstrates how these technologies work together -- from an overview to a detailed look -- to make extremely efficient Web development ...
javascript - How do I return the response from an asynchronous …
How do I return the response/result from a function foo that makes an asynchronous request?. I am trying to return the value from the callback, as well as assigning the result to a local variable inside the function and returning that one, but none of those ways actually return the response — they all return undefined or whatever the initial value of the variable result is.
How to pass parameters in $ajax POST? - Stack Overflow
2013年9月9日 · The Jquery.ajax documentation says that there is a flag called processData that controls whether this encoding is done automatically or not. The documentation says that it defaults to true, but that is not the behavior I observe when POST is used.
javascript - How to send FormData objects with Ajax-requests in …
In some cases when forcing jQuery ajax to do non-expected things, the beforeSend event is a great place to do it. For a while people were using beforeSend to override the mimeType before that was added into jQuery in 1.5.1. You should be able to modify just about anything on the jqXHR object in the before send event.
javascript - Fetch vs. AjaxCall - Stack Overflow
2016年7月12日 · What is the difference between typical AJAX and Fetch API? Consider this scenario: function ajaxCall(url) { return new Promise(function(resolve, reject) { var req = new XMLHttpRequest(); ...
How to get the jQuery $.ajax error response text?
The question was related to the Ajax request where the dataType is "text", if you are talking about json datatype, the answers would be different. For json datatype, we have xhr.responseJSON object that contains the message key. –