In my current project, I am attempting to generate a temporary URL for a local image and submit it to Google for an Image Search. I need this URL to be transient and automatically deleted after the search is complete. Here's the code snippet that I have implemented:
// Function to retrieve a dynamic URL for performing an image search using Google.
function getImageURL() {
var xml = new XMLHttpRequest();
xml.onreadystatechange = function () {
if (xml.readyState == 4 && xml.status == 200) {
deleteImageURL(); // Initiate asynchronous call to the server to delete the URL
window.location.href =
"https://www.google.com/searchbyimage?site=search&sa=X&image_url="
+ xml.responseText; // Generated image URL
}
}
xml.open("GET", "REST_ENDPOINT", true);
xml.send();
}
The getImageURL() function contacts the server, deletes the URL upon completion, and redirects the page. The deleteImageURL() function triggers another AJAX call for URL deletion. Despite loading the Google page successfully, there may still be timing issues as the URL might not finish deleting before the redirect occurs.
My query is whether deleteImageURL() will properly delete the image URL even after the page has been redirected, or will it halt midway through the process?
UPDATE: Considering suggestions regarding potential race conditions, I revised the code as follows:
// Function to obtain a dynamic URL for conducting a Google image search.
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();
}
// Function to remove the image URL.
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 revised code consistently performs well in tests. While there may still be some race conditions present, the functionality appears to be working correctly thus far.
Thank you for your assistance.