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How do I add a class to a given element?

...lement.classList.add to add a class: element.classList.add("my-class"); And element.classList.remove to remove a class: element.classList.remove("my-class"); If you need to support Internet Explorer 9 or lower: Add a space plus the name of your new class to the className property of the eleme...
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Why is 128==128 false but 127==127 is true when comparing Integer wrappers in Java?

... When you compile a number literal in Java and assign it to a Integer (capital I) the compiler emits: Integer b2 =Integer.valueOf(127) This line of code is also generated when you use autoboxing. valueOf is implemented such that certain numbers are "pooled", and i...
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^M at the end of every line in vim

When I am editing source files using vim and other editors sometimes at the end of the line I get these ^M characters at the end of each line. I think that it has something to do with editing a file in windows and then in linux. How can I remove all of these automatically? ...
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How to Select Columns in Editors (Atom,Notepad++, Kate, VIM, Sublime, Textpad,etc) and IDEs (NetBean

How to select columns in Editors and IDEs to columnar delete, insert or replace some characters ? 21 Answers ...
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How to show popup message like in Stack Overflow

...essage like the one that appears on Stack Overflow when I am not logged in and I try to use voting buttons. 6 Answers ...
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What is the most compatible way to install python modules on a Mac?

I'm starting to learn python and loving it. I work on a Mac mainly as well as Linux. I'm finding that on Linux (Ubuntu 9.04 mostly) when I install a python module using apt-get it works fine. I can import it with no trouble. ...
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How can I symlink a file in Linux? [closed]

I want to make a symbolic link in Linux. I have written this Bash command where the first path is the folder I want link into and the second path is the compiled source. ...
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Dynamic array in C#

... The question (albeit short and undescriptive) isn't asking about a generic list - Question could be asking about dynamic[] msdn.microsoft.com/en-GB/library/dd264736.aspx (array of dynamic types) or ExpandoObject msdn.microsoft.com/en-us/library/… I c...
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Why should I avoid using Properties in C#?

...nt book, CLR Via C#, Jeffrey Richter said that he doesn't like properties, and recommends not to use them. He gave some reason, but I don't really understand. Can anyone explain to me why I should or should not use properties? In C# 3.0, with automatic properties, does this change? ...
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Getting the class name from a static method in Java

...thanks to @James Van Huis): MyClass.class.getSimpleName(); // class name and no more share | improve this answer | follow | ...