jQuery AJAX导致页面加载缓慢 [英] Jquery AJAX causes SLOW page load

问题描述

我有一个如下所示的javascript函数:

I have a javascript function that looks like this:

function getAlerts() {
    $.post('getAlerts.php', function(data) {
        //Do stuff
        setTimeout(getAlerts, 1000);
    });
}

然后我进入document.ready块:

I then have in the document.ready block:

$(document).ready(function() {  
    setTimeout(getAlerts, 1000);
}

我希望每秒钟调用一次getAlerts函数，从页面加载后一秒钟开始.但是，当我将此回调添加到document.ready块时，这将导致整个页面的加载非常缓慢(如果有的话).我在这里想念什么?

I want the getAlerts function to be called every second, starting one second after the page has loaded. However, when I add this callback to the document.ready block, it causes the entire page to load extremely slowly, if at all. What am I missing here?

我还注意到，缓慢的页面加载仅在启用getAlerts函数并刷新页面两次之后才开始.前几次刷新似乎很好. AJAX调用是否可能在某处成为瓶颈?

I also notice that the slow page load only starts after enabling the getAlerts function, and refreshing the page a couple times. The first few refreshes seem fine. Is it possibly that the AJAX calls are bottlenecking somewhere?

推荐答案

我会尝试取出setTimeout，它将功能延迟一秒钟.另外，您可能想看看要发布到的php代码.如果它正在进行大量的mysql查询或其他可能会减慢您的加载时间的事情.

I would try taking out the setTimeout, it's delaying the function by a second. Also you may want to take a look at the php code that you are posting to. If it is making tons of mysql queries or something that could be slowing your load time as well.

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