Problem with jsfiddle ajax POST echo

by alano

HTML

<div id="test"/>
<button onclick="doTest()">Test</button>

JavaScript

function doTest(){
    $.ajax({
        url: '/echo/html/',
        data: { html: "<span>TEST</span>" },
        type: 'POST',
        dataType: 'html',
        success: function(response){
            $("#test").append(response);
        },
        error: function(jqXHR) {
            $("#test").text(jqXHR.statusCode + ": " + jqXHR.statusMessage);
        }
    });
}