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How to remove Firefox's dotted outline on BUTTONS as well as links?

I can make Firefox not display the ugly dotted focus outlines on links with this: 25 Answers ...
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Git diff against a stash

How can I see the changes un-stashing will make to the current working tree? I would like to know what changes will be made before applying them! ...
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Count number of matches of a regex in Javascript

I wanted to write a regex to count the number of spaces/tabs/newline in a chunk of text. So I naively wrote the following:- ...
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Transitions on the CSS display property

I'm currently designing a CSS 'mega dropdown' menu - basically a regular CSS-only dropdown menu, but one that contains different types of content. ...
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How to synchronize a static variable among threads running different instances of a class in Java?

I know that using the synchronize keyword before a method brings synchronization to that object. That is, 2 threads running the same instance of the object will be synchronized. ...
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How to check whether a string is Base64 encoded or not

I want to decode a Base64 encoded string, then store it in my database. If the input is not Base64 encoded, I need to throw an error. ...
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Generate random string/characters in JavaScript

I want a 5 character string composed of characters picked randomly from the set [a-zA-Z0-9] . 77 Answers ...
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How can I check if a URL exists via PHP?

How do I check if a URL exists (not 404) in PHP? 22 Answers 22 ...
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Change Bootstrap input focus blue glow

Does anyone know the how to change Bootstrap's input:focus ? The blue glow that shows up when you click on an input field? ...
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Selecting a row in DataGridView programmatically

How can I select a particular range of rows in a DataGridView programmatically at runtime? 8 Answers ...