Geek Answers Handbook

Browsers continue to run Javascript after "PageUnload" and the new "PageLoad",

We have the next AJAX jitter. This was implemented in order to be able to execute many (20+) ajax requests for one page without residual time, only because the first X requests took a total of 60 seconds.

RequestThrottler: {
    maximumConcurrentRequests: 3, //default to 3        
    requestQueue: new Array(),
    numberOfRequestCurrentlyProcessing: 0,

    addRequestToQueue: function (currentRequest) {
        var self = this;
        self.requestQueue.push(currentRequest);

        if (self.numberOfRequestCurrentlyProcessing < self.maximumConcurrentRequests) { self.sendNextRequest(); }
    },

    sendNextRequest: function () {
        var self = this;
        if (self.numberOfRequestCurrentlyProcessing >= self.maximumConcurrentRequests) { return; }
        if (self.requestQueue.length === 0) { return; }

        var currentRequest = self.requestQueue.pop();
        self.numberOfRequestCurrentlyProcessing++;
        AJAX.SendAjaxRequest(currentRequest.url, currentRequest.httpMethod, 
            function(data){
                self.numberOfRequestCurrentlyProcessing--;
                currentRequest.onSuccessCallback(data);
                self.sendNextRequest();
            }, 
            function(){
                self.numberOfRequestCurrentlyProcessing--;
                currentRequest.onErrorCallback();
                self.sendNextRequest();
            });
    },

    sendUpdateRequest: function (currentRequest) {
        var self = this;
        self.addRequestToQueue(currentRequest);
    }
}

However, since these requests are in the Javascript queue when a user tries to load a new page, the developer tools display the answers in the NET area of ​​the new page. Our application has a privacy check to prevent this behavior. Is this normal for browsers, or is it some kind of error, or am I doing something wrong?

+4
1

window.onbeforeunload abort ajax-, .

beforeunload unload :

1) beforeunload , unload:

. , Firefox , , , . , , beforeunload.

:

2) beforeunload , unload . , , beforeunload. , , ajax .

window.addEventListener("beforeunload", function (e) {
  var confirmationMessage = "\o/";

  (e || window.event).returnValue = confirmationMessage;     // Gecko and Trident
  return confirmationMessage;                                // Gecko and WebKit
});

:

+4

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