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Is it possible to ping a server from Javascript?

...ther parts of the source but you get the idea). function Pinger_ping(ip, callback) { if(!this.inUse) { this.inUse = true; this.callback = callback this.ip = ip; var _that = this; this.img = new Image(); this.img.onload = function() {_that.good();}; this.img.onerro...
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FormData.append(“key”, “value”) is not working

...rmdata.get(key) and more very useful methods Original answer: What I usually do to 'debug' a FormData object, is just send it (anywhere!) and check the browser logs (eg. Chrome devtools' Network tab). You don't need a/the same Ajax framework. You don't need any details. Just send it: var xhr = ...
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How to programmatically set drawableLeft on Android button?

I'm dynamically creating buttons. I styled them using XML first, and I'm trying to take the XML below and make it programattic. ...
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jQuery UI: Datepicker set year range dropdown to 100 years

...You can set the year range using this option per documentation here http://api.jqueryui.com/datepicker/#option-yearRange yearRange: '1950:2013', // specifying a hard coded year range or this way yearRange: "-100:+0", // last hundred years From the Docs Default: "c-10:c+10" The range ...
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How do I monitor the computer's CPU, memory, and disk usage in Java?

... = 390625000 is only how long that thread has been running. That is not really useful for determining the processor usage – MikeNereson Jul 14 '09 at 15:35 2 ...
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Padding or margin value in pixels as integer using jQuery

... the width/height without padding, you need to use .width() and .height(). api.jquery.com/innerWidth api.jquery.com/width api.jquery.com/outerWidth – Andrew Ensley May 14 '12 at 15:47 ...
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Android Fragments and animation

... To achieve the same thing with hiding or showing a fragment you'd simply call ft.show or ft.hide, passing in the Fragment you wish to show or hide respectively. For reference, the XML animation definitions would use the objectAnimator tag. An example of slide_in_left might look something like this...
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Wrapping a C library in Python: C, Cython or ctypes?

I want to call a C library from a Python application. I don't want to wrap the whole API, only the functions and datatypes that are relevant to my case. As I see it, I have three choices: ...
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Find size of Git repository

...nt ideas of "complete size" you could use: git bundle create tmp.bundle --all du -sh tmp.bundle Close (but not exact:) git gc du -sh .git/ With the latter, you would also be counting: hooks config (remotes, push branches, settings (whitespace, merge, aliases, user details etc.) stashes (see ...
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How to order events bound with jQuery

...his.bind(eventType + eventNameSpace, eventData, handler); var allEvents = $this.data("events") || $._data($this[0], "events"); var typeEvents = allEvents[eventType]; var newEvent = typeEvents.pop(); typeEvents.unshift(newEvent); }); }; })(...