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Insert line break inside placeholder attribute of a textarea?

... a line \nthis should be a new line'); Then you could remove it on focus and apply it back (if empty) on blur. Something like this var placeholder = 'This is a line \nthis should be a new line'; $('textarea').attr('value', placeholder); $('textarea').focus(function(){ if($(this).val() === p...
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Round to at most 2 decimal places (only if necessary)

... @James Wow that's really weird- I'm working in the Chrome dev console and I'm noticing that 1.005 * 100 = 100.49999999999999. Math.round(100.49999999999999) evaluates to 100, whereas Math.round(100.5) evaluates to 101. IE9 does the same thing. This is due to floating point weirdness in javascri...
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Copy file(s) from one project to another using post build event…VS2010

...ProjectDir)Views\Home\Index.cshtml" "$(SolutionDir)MEFMVCPOC\Views\Home" and if you want to copy entire folders: xcopy /E /Y "$(ProjectDir)Views" "$(SolutionDir)MEFMVCPOC\Views" Update: here's the working version xcopy "$(ProjectDir)Views\ModuleAHome\Index.cshtml" "$(SolutionDir)MEFMVCPOC\Vi...
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@ variables in Ruby on Rails

What's the difference between @title and title ? Since both of them can be variable names. Also, how do I decide which kind of variable I should use? With @ or not? ...
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How can jQuery deferred be used?

jQuery 1.5 brings the new Deferred object and the attached methods .when , .Deferred and ._Deferred . 11 Answers ...
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Accessing JPEG EXIF rotation data in JavaScript on the client side

... The trick is that all this should happen in the browser, using JavaScript and <canvas> . 8 Answers ...
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Adding an arbitrary line to a matplotlib plot in ipython notebook

I'm rather new to both python/matplotlib and using it through the ipython notebook. I'm trying to add some annotation lines to an existing graph and I can't figure out how to render the lines on a graph. So, for example, if I plot the following: ...
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MFC 的SetWindowPos 用法 - C/C++ - 清泛网 - 专注C/C++及内核技术

...DN上的 解释 ::: 其内部定义: BOOL SetWindowPos( HWND hWnd, // handle of window HWND hWndInsertAfter, // placement-order handle int X, // horizontal position int Y, // vertical position int cx, // width int cy, // height UINT uFlags // window-positioning flags ); 参数...
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Classpath including JAR within a JAR

... If you're trying to create a single jar that contains your application and its required libraries, there are two ways (that I know of) to do that. The first is One-Jar, which uses a special classloader to allow the nesting of jars. The second is UberJar, (or Shade), which explodes the included...
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tag in Twitter Bootstrap not functioning correctly?

... 18px 0; } It correspond to a 1px horizontal line with a very light grey and vertical margin of 18px. and because <hr> is inside a <div> without class the width depends on the content of the <div> if you would like the <hr> to be full width, replace <div> with <d...