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What are valid values for the id attribute in HTML?
...answer is technically:
ID and NAME tokens must begin with a letter ([A-Za-z]) and may be followed by any number of letters, digits ([0-9]), hyphens ("-"), underscores ("_"), colons (":"), and periods (".").
HTML 5 is even more permissive, saying only that an id must contain at least one charac...
How do I check if an element is really visible with JavaScript? [duplicate]
...Sebas
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answered May 25 '09 at 4:41
Christophe EbléChristophe Eblé
7,47322...
How to copy commits from one branch to another?
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Getting the name of a variable as a string
...wen WangPanwen Wang
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Placing border inside of div and not on its edge
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Set box-sizing property to border-box:
div {
box-sizing: border-box;
-moz-box-sizing: border-box;
-webkit-box-sizing: border-box;
width: 100px;
height: 100px;
border: 20px solid #f00;
background:...
Difference between “git add -A” and “git add .”
...e
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answered Feb 21 '09 at 9:00
CB BaileyCB Bailey
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Redefine tab as 4 spaces
...the (maximum) width of an actual tab character.
shiftwidth
The size of an "indent". It's also measured in spaces, so if your code base indents with tab characters then you want shiftwidth to equal the number of tab characters times tabstop. This is also used by things like the =, > and ...
How to check if a user is logged in (how to properly use user.is_authenticated)?
...okhen
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answered Sep 5 '10 at 3:32
Brian NealBrian Neal
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Auto Resize Image in CSS FlexBox Layout and keeping Aspect Ratio?
...nkron
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answered Jan 13 '14 at 23:52
OmegaOmega
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How do I copy an entire directory of files into an existing directory using Python?
...ectory named bar (containing one or more files) and a directory named baz (also containing one or more files). Make sure there is not a directory named foo .
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