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CSS :after not adding content to certain elements
...tag are void elements and they can't display content inside them:
https://www.w3.org/TR/html5/syntax.html#void-elements
All Blink, Webkit and Quantum browsers allow you to create pseudo elements only on checkboxes but this is controversial since no spec allow this behavior.
Here an example:
https...
Combining CSS Pseudo-elements, “:after” the “:last-child”
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An old thread, nonetheless someone may benefit from this:
li:not(:last-child)::after { content: ","; }
li:last-child::after { content: "."; }
This should work in CSS3 and [untested] CSS2.
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What is the difference between single-quoted and double-quoted strings in PHP?
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Interesting note in PHP documentation comments: php.net/manual/en/language.types.string.php#120160 - "The double-quoted strings "which look so $slow since they have to parse everything for \n backslashes and $dollar signs to do variable expansion", turned out to be the FASTEST...
What's the difference between a 302 and a 307 redirect?
... changed because so many web-sites issue mistakenly issue 302. In fact ASP.net MVC incorrectly issues 302, depending on the fact that browsers handle it incorrectly.
– Ian Boyd
Oct 3 '13 at 2:26
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What does LINQ return when the results are empty
...th=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 47.1084 7.58816C47.4091 7.46349 47.7169 7.36433 48.0099 7.26993C48.9099 6.97997 49.672 6.73443 49.672 5.93063C49.672 5.22043 48.9832 4...
Variable declaration placement in C
...riable declarations at the top of the block can create security holes: lwn.net/Articles/443037
– MarcH
May 17 '11 at 8:36
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Why are iframes considered dangerous and a security risk?
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iframe is also vulnerable to Cross Frame Scripting:
https://www.owasp.org/index.php/Cross_Frame_Scripting
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System.currentTimeMillis vs System.nanoTime
...s in hotspot/src/os/windows/vm/os_windows.cpp in OpenJDK (hg.openjdk.java.net/jdk8/jdk8/hotspot/file/87ee5ee27509/src/os/…). Looks like it's still GetSystemTimeAsFileTime, so I do not know where change comes from. Or if it's even valid. Test before using.
– user3458
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Is there a regular expression to detect a valid regular expression?
...?\)|\(\?(?:R|[+-]?\d+)\))(?:(?:[?+*]|\{\d+(?:,\d*)?\})[?+]?)?|\|)*)$/
.NET does not support recursion directly. (The (?1) and (?R) constructs.) The recursion would have to be converted to counting balanced groups:
^ # start of string
(?:
(?: [^?+*{}()[\...
browser sessionStorage. share between tabs?
...E8 support as well. :)
Credit goes to this full article:
http://blog.guya.net/2015/06/12/sharing-sessionstorage-between-tabs-for-secure-multi-tab-authentication/
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