'Access-Control-Allow-Origin ': '*' is not working

Question

I tried to answer all the questions related to this tag but I was not successful where is my mistake?

$(document).ready(function () {
    $.ajax({
        type: "GET",
        url: "http://www.tcmb.gov.tr/kurlar/today.xml",
        dataType: "xml",
        headers: {
            'Access-Control-Allow-Origin ': '*'
        },
        success: function (xml) {
            alert("Success");

        }

    });
});

My error;

Access to XMLHttpRequest at 'http://www.tcmb.gov.tr/kurlar/today.xml' from origin 'http://localhost:44318' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.

I'm using jquery ajax in asp.net framework.please I tried the answers to all questions please do not throw the question title.

Answer 1

Try this:

 $(document).ready(function() { $.ajax({ type: "GET", url: "https://cors-anywhere.herokuapp.com/http://www.tcmb.gov.tr/kurlar/today.xml", dataType: "xml", success: function(xml) { console.log('success') var xmlText = new XMLSerializer().serializeToString(xml); var xmlTextNode = document.createTextNode(xmlText); var parentDiv = document.getElementById('xml'); parentDiv.appendChild(xmlTextNode); } }); });

 <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script> <div id="xml"></div>