I have a web application with a great deal of both client-side and server-side logic.  It is considered business-critical that this application feel responsive to the end user, for some definition of "feels responsive."  ;)  Most website moni...
I'm looking to monitor the end user experience of our website and link that with timing information already logged on the server side. My assumption is that this will require javascript to to capture time stamps at the start of request (window.on...
Are there standards for acceptable loss of beacon data when measuring performance of web pages, and standard way to account for these losses?  Many users don't have a browser that supports Navigator.sendBeacon, and even that API can't guarant...
I am looking for a tool that lets you monitor/log page rendering time on client machines. I am not looking for firebug/yslow because i want to know the following type of things:   How does fast do my pages load when the user is in russia? How long do...
How could I get a callback whenever new properties are set on a Javascript Object..? I.e. I don't know which properties are going to be set, but want a callback for any properties that are set.  What I want is  var obj = {}; obj.a = "somethin...
We would like to measure how much time it takes the browser the get a resource from the network. so for example if my page loads 10 images and 4 scripts I would like to know how much time it took the browser to load those resources from the network....
I have a simple code:  <div id="dk" style="background-image: url('d.jpg');"></div>   I would like to monitory this div loading and when it success do something and if the load take more then 5 seconds do otherthing...
I'm using Node.js to make a monitoring API for my home server à la Nagios and Munin. In doing so I've discovered that I would like more verbose memory information than os.freemem() can give me.  What I'd really love to do is turn somethi...
What is the best way to automatically check if a checkbox has been (un)checked. I know that the onclick event will catch click events but what if another script changes the state of the checkbox ala "check all button"....
I've got an existing single page web application of which I can't change the code. Some users complain that the application is not performing very well.  I would like to monitor the loading time in this way:   Record the time stamp of a click...

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