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What does “javascript:void(0)” mean?

...rator is often used merely to obtain the undefined primitive value, usually using “void(0)” (which is equivalent to “void 0”). In these cases, the global variable undefined can be used instead (assuming it has not been assigned to a non-default value). An explanation is provi...
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No module named pkg_resources

... Reported the bug to CentOS.org bugs.centos.org/view.php?id=14042 – rjt Oct 20 '17 at 19:22 ...
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jquery $(window).height() is returning the document height

... With no doctype tag, Chrome reports the same value for both calls. Adding a strict doctype like <!DOCTYPE html> causes the values to work as advertised. The doctype tag must be the very first thing in your document. E.g., you can't have any text before it, even if it doesn't re...
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How do I make JavaScript beep?

...h="0" height="0" id="sound1" enablejavascript="true"> You would then call it from JavaScript code as such: PlaySound("sound1"); This should do exactly what you want - you'll just need to find/create the beep sound yourself, which should be trivial. ...
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How can I check if a value is a json object?

...ly string values through ajax (which can be fairly useful if you are using PHP or ASPX to process ajax requests and might or might not return JSON depending on conditions) The solution is quite simple, you can do the following to check if it was a valid JSON return var IS_JSON = true; ...
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Remote debugging with Android emulator

...sh -NL 5554:localhost:5554 -L 5555:localhost:5555 myuser@remote-server killall adb; adb devices I believe the emulator tries to notify a local adb server at startup; hence the need to restart adb in order for it to probe the local 5554+ ports. Note that the localhost in the ssh command refers to ...
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Escaping a forward slash in a regular expression

...s as the delimiter and therefore you don't need to escape it. But AFAIK in all languages, the only special significance the / has is it may be the designated pattern delimiter. share | improve this...
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TaifunPlayer 扩展(Audio Player):音频播放器扩展,支持流媒体播放控制 ...

...,原作者为 Taifun。 原始链接:https://puravidaapps.com/player.php 文档翻译和整理:AI2中文网 您的改进建议 联系方式: 不需要回复的可留空~ 意见反馈(300字以内): 给个鼓励...
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Commenting multiple lines in DOS batch file

... Wow, didn't know notepad++ has such a nice feature! Actually really missed it because I'm used to `Ctrl+7' in Eclipse. Voted up to 42 ;) – Danny Lo Dec 6 '15 at 14:45 ...
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How to use sessions in an ASP.NET MVC 4 application?

...pe in a session. Once created you can access the value stored to it across all views and controllers. Take note also that session created is only accessible per user and per browser. Meaning the session created by User1 using Firefox cannot be accessed by the same user using IE. There are things als...