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Can a div have multiple classes (Twitter Bootstrap) [duplicate]
... can have as many classes as you want (this is both regarding to bootstrap and HTML in general):
<div class="active dropdown-toggle"></div>
Just separate the classes by space.
Also: Keep in mind some bootstrap classes are supposed to be used for the same stuff but in different cases ...
Image inside div has extra space below the image
...is rendered inline, like a letter so it sits on the same line that a, b, c and d sit on.
There is space below that line for the descenders you find on letters like g, j, p and q.
You can:
adjust the vertical-align of the image to position it elsewhere (e.g. the middle) or
change the display so...
What is the exact difference between currentTarget property and target property in javascript
Can anyone please tell me the exact difference between currentTarget and target property in Javascript events with example and which property is used in which scenario?
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Set custom HTML5 required field validation message
...sign a function, it can accept a reference to the input element (DOM node) and it must return a string which is then displayed as the error message.
Compatibility
Tested in:
Chrome Canary 47.0.2
IE 11
Microsoft Edge (using the up-to-date version as of 28/08/2015)
Firefox 40.0.3
Opera 31.0
Ol...
Efficiently updating database using SQLAlchemy ORM
I'm starting a new application and looking at using an ORM -- in particular, SQLAlchemy.
6 Answers
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Getting the name of a child class in the parent class (static context)
I'm building an ORM library with reuse and simplicity in mind; everything goes fine except that I got stuck by a stupid inheritance limitation. Please consider the code below:
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What's the difference between Ruby's dup and clone methods?
...s often my source for answers to these questions, since it is quite clear, and a fairly compliant Ruby implementation.
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How to make div background color transparent in CSS
...that allows you to do that.
Just create a new image, delete the background and put a semi-transparent color in it, then save it in png.)
As said by René, the best thing to do would be to mix both, with the rgba first and the 1px by 1px image as a fallback if the browser doesn't support alpha :
ba...
In a storyboard, how do I make a custom cell for use with multiple controllers?
... to use storyboards in an app I'm working on. In the app there are Lists and Users and each contains a collection of the other (members of a list, lists owned by a user). So, accordingly, I have ListCell and UserCell classes. The goal is to have those be re-usable throughout the app (ie, in ...
How to determine whether a Pandas Column contains a particular value
I am trying to determine whether there is an entry in a Pandas column that has a particular value. I tried to do this with if x in df['id'] . I thought this was working, except when I fed it a value that I knew was not in the column 43 in df['id'] it still returned True . When I subset to a data...