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Do checkbox inputs only post data if they're checked?

...viour is the value is only sent if the checkbox is checked. This typically means you need to have a way of remembering what checkboxes you are expecting on the server side since not all the data comes back from the form. The default value is always "on", this should be consistent across browsers. ...
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vertical divider between two columns in bootstrap

...gt; <div class="span6"> </div> </div> Then I'd assume you're using additional DIVS within the "span6" DIVS for holding/styling your content? So... <div class="row"> <div class="span6"> <div class="mycontent-left"> </div> </div> &lt...
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What in the world are Spring beans?

...ing beans that I can understand. I see them referenced often in Grails documentation and books, but I think that understanding what they are would be beneficial. So what are Spring beans? How can they be used? Do they have something to do with Dependency Injection? ...
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jQuery: what is the best way to restrict “number”-only input for textboxes? (allow decimal points)

...se any kind of input filter on a text <input>, including various numeric filters. This will correctly handle Copy+Paste, Drag+Drop, keyboard shortcuts, context menu operations, non-typeable keys, and all keyboard layouts. See this answer or try it yourself on JSFiddle. jquery.numeric ...
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Prevent users from submitting a form by hitting Enter

I have a survey on a website, and there seems to be some issues with the users hitting enter (I don't know why) and accidentally submitting the survey (form) without clicking the submit button. Is there a way to prevent this? ...
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Backwards migration with Django South

...so this seems like a really silly thing to ask, and I'm sure I'm missing something somewhere. 3 Answers ...
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How to find index of list item in Swift?

... As swift is in some regards more functional than object-oriented (and Arrays are structs, not objects), use the function "find" to operate on the array, which returns an optional value, so be prepared to handle a nil value: let arr:Array = [...
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Showing a different background colour in Vim past 80 characters

... editing my .vimrc. I use Ubuntu Mono 11 font and the molokai color scheme. You can find my vim config and all of my dotfiles on GitHub. share | improve this answer | foll...
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Why does “,,,” == Array(4) in Javascript?

...of the array to that number. So you can say you have four empty indexes (same as [,,,]) and the default string representation of arrays is a comma-separated list of its elements: > ['a','b','c'].toString() "a,b,c" How the comparison works is described in section 11.9.3 of the specification...
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JComboBox Selection Change Listener?

...mbo.addActionListener (new ActionListener () { public void actionPerformed(ActionEvent e) { doSomething(); } }); @John Calsbeek rightly points out that addItemListener() will work, too. You may get 2 ItemEvents, though, one for the deselection of the previously selected item, and ...