Is it possible to utilize AJAX requests within Web Workers?

Question

Is it possible to utilize AJAX requests within Web Workers?

Ensuring that the latest changes made by the user on my web application are saved to the database is crucial. To achieve this, I have a function that sends the data to the database when the user closes the page:

window.onbeforeunload = sendData;

However, a problem arises when I try to send data every 10 seconds. Since the requests are sent synchronously (to ensure they are sent during onbeforeunload), it causes delays in the user interface.

setInterval(sendData,10000);

Here is the function that is being called:

function sendData(){
     var xhr = new XMLHttpRequest();
     var localData = datatodatabase;
     xhr.open("POST", "handler.php", false);
     xhr.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
     xhr.send("pack="+datatodatabase);
}

Is there a way to optimize this by utilizing a Web Worker to prevent the synchronous requests from affecting the rest of the application?

(Please note: Synchronous requests are required due to onbeforeunload)

javascript ajax

Answer 1

Answer №1

Have you considered implementing an asynchronous function that runs every 10 seconds, but switches to synchronous when using onbeforeunload? Here's an example:

setInterval(function () {
    sendData(true);
}, 10000);

window.onbeforeunload = function () {
    sendData(false);
}

function sendData(async) {
    // Adjust the ajax call method based on the value of *async*

    // Potentially in the future:
    xhr.open("POST", "handler.php", async);
}

Answer 2

Have you considered implementing an asynchronous function that runs every 10 seconds, but switches to synchronous when using onbeforeunload? Here's an example:

setInterval(function () {
    sendData(true);
}, 10000);

window.onbeforeunload = function () {
    sendData(false);
}

function sendData(async) {
    // Adjust the ajax call method based on the value of *async*

    // Potentially in the future:
    xhr.open("POST", "handler.php", async);
}

Is it possible to utilize AJAX requests within Web Workers?

Answer №1

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