I am trying to create a temporary image url for a local image and send it to Google to do a Search by Image. I don't want the image url to be permanent so I want to delete it right after I use it. I have the code below:

```
// Gets a URL that can be used to do a search by image through Google.
function getImageURL() {
    var xml = new XMLHttpRequest();
    xml.onreadystatechange = function () {
        if (xml.readyState == 4 && xml.status == 200) {
            deleteImageURL(); // asynchronous call to server to delete the URL
            window.location.href = 
                "https://www.google.com/searchbyimage?site=search&sa=X&image_url=" 
                + xml.responseText; // the image url
        }
    }
    xml.open("GET", "REST_ENDPOINT", true);
    xml.send();
}

```

The function above calls the server, and when it finishes, will delete the url and redirect the page. The function "deleteImageURL()" is another ajax call done asynchronously. Currently, this loads the google page fine as the image URL is not done deleting the url by the time that the redirect happens.

My question is this: Will deleteImageURL() finish deleting the image URL even after the page redirects or will it stop (and thus, never delete the URL)?

EDIT: So I was thinking about what you guys were saying about race conditions and tried the following code instead:

```
// Gets a URL that can be used to do a search by image through Google.
function getImageURL() {
    var xml = new XMLHttpRequest();
    xml.onreadystatechange = function () {
        if (xml.readyState == 4 && xml.status == 200) {
            deleteImageURL(xml.responseText);
        }
    }
    xml.open("GET", "REST_ENDPOINT"
        + id + "/public_url", true);
    xml.send();
}

// Deletes the url for the image.
function deleteImageURL(imageURL) {
    var xml = new XMLHttpRequest();
    xml.open("GET", "REST_ENDPOINT_FOR_DELETE", true);
    xml.send();
    window.location.href = 
            "https://www.google.com/searchbyimage?site=search&sa=X&image_url="
            + imageURL;
}

```

This code works every time that I run it. I think that there still may be a race condition, but it seems to be working fine so far.

Thanks again.