You can just use the ContentResult to return a plain string: public ActionResult Temp() { return Content(“Hi there!”); } ContentResult by default returns a text/plain as its contentType. This is overloadable so you can also do: return Content(“<xml>This is poorly formatted xml.</xml>”, “text/xml”);
You can now do this in most “modern” browsers! Here is the original article I read (posted July 10, 2010): HTML5: Changing the browser-URL without refreshing page. For a more in-depth look into pushState/replaceState/popstate (aka the HTML5 History API) see the MDN docs. TL;DR, you can do this: window.history.pushState(“object or string”, “Title”, “/new-url”); See my … Read more
Basic usage of .ajax would look something like this: HTML: <form id=”foo”> <label for=”bar”>A bar</label> <input id=”bar” name=”bar” type=”text” value=”” /> <input type=”submit” value=”Send” /> </form> jQuery: // Variable to hold request var request; // Bind to the submit event of our form $(“#foo”).submit(function(event){ // Prevent default posting of form – put here to work … Read more
jQuery now defines a when function for this purpose. It accepts any number of Deferred objects as arguments, and executes a function when all of them resolve. That means, if you want to initiate (for example) four ajax requests, then perform an action when they are done, you could do something like this: $.when(ajax1(), ajax2(), … Read more
Make sure you’re setting Response.StatusCode to something other than 200. Write your exception’s message using Response.Write, then use… xhr.responseText ..in your javascript.
File upload is not possible through AJAX. You can upload file, without refreshing page by using IFrame. You can check further details here. UPDATE With XHR2, File upload through AJAX is supported. E.g. through FormData object, but unfortunately it is not supported by all/old browsers. FormData support starts from following desktop browsers versions. IE 10+ … Read more
jQuery.ajax attempts to convert the response body depending on the specified dataType parameter or the Content-Type header sent by the server. If the conversion fails (e.g. if the JSON/XML is invalid), the error callback is fired. Your AJAX code contains: dataType: “json” In this case jQuery: Evaluates the response as JSON and returns a JavaScript … Read more
With “vanilla” (plain) JavaScript: function loadXMLDoc() { var xmlhttp = new XMLHttpRequest(); xmlhttp.onreadystatechange = function() { if (xmlhttp.readyState == XMLHttpRequest.DONE) { // XMLHttpRequest.DONE == 4 if (xmlhttp.status == 200) { document.getElementById(“myDiv”).innerHTML = xmlhttp.responseText; } else if (xmlhttp.status == 400) { alert(‘There was an error 400’); } else { alert(‘something else other than 200 was returned’); … Read more
Here’s what I use on my site: var objDiv = document.getElementById(“your_div”); objDiv.scrollTop = objDiv.scrollHeight;
This is a simple reference: // this is the id of the form $(“#idForm”).submit(function(e) { e.preventDefault(); // avoid to execute the actual submit of the form. var form = $(this); var actionUrl = form.attr(‘action’); $.ajax({ type: “POST”, url: actionUrl, data: form.serialize(), // serializes the form’s elements. success: function(data) { alert(data); // show response from the … Read more