大约有 19,601 项符合查询结果（耗时：0.0253秒） [XML]
Make HTML5 video poster be same size as video itself
...or preloading but without requiring a separate transparent image. We use a base64 encoded 1px transparent image instead.
<style type="text/css" >
video{
background: transparent url("poster.jpg") 50% 50% / cover no-repeat ;
}
</style>
<video controls poster="data:image...
Responsive font size in CSS
... font-size: 24px;
}
}
Use dimensions in % or em. Just change the base font size, and everything will change. Unlike the previous one, you could just change the body font and not h1 every time or let the base font size be the default of the device and the rest all in em:
“Ems” (em): T...
How to make a valid Windows filename from an arbitrary string?
...
In case anyone wants an optimized version based on StringBuilder, use this. Includes rkagerer's trick as an option.
static char[] _invalids;
/// <summary>Replaces characters in <c>text</c> that are not allowed in
/// file names with the specified ...
What is the difference between parseInt() and Number()?
...ling characters that don't correspond with any digit of the currently used base.
The Number constructor doesn't detect octals:
Number("010"); // 10
parseInt("010"); // 8, implicit octal
parseInt("010", 10); // 10, decimal radix used
But it can handle numbers in hexadecimal notation,...
What is InnoDB and MyISAM in MySQL?
...t
MyISAM is the default storage engine
for the MySQL relational database
management system versions prior to
5.5 1. It is based on the older ISAM code but has many useful extensions.
The major deficiency of MyISAM is the absence of transactions support.
Versions of MySQL 5.5 and great...
SQL Joins Vs SQL Subqueries (Performance)?
...f it was possible). But when you have a Group by on a well indexed column (based on its cardinality) then it will be much faster. So it really depends on the situation.
– Alix
May 17 at 14:22
...
How do I programmatically determine operating system in Java?
...tically (for example: I would like to be able to load different properties based on whether I am on a Windows or Unix platform). What is the safest way to do this with 100% reliability?
...
How can I get a web site's favicon?
...two will usually yield a higher quality image.
Just to cover all of the bases, there are device specific icon files that might yield higher quality images since these devices usually have larger icons on the device than a browser would need:
<link rel="apple-touch-icon" href="images/touch.png...
Should URL be case sensitive?
...gh it may be treated as case-insensitive by some servers, especially those based on Microsoft Windows.
If the server is case sensitive and http://en.example.org/wiki/URL is correct, then http://en.example.org/WIKI/URL or http://en.example.org/wiki/url will display an HTTP 404 error page, unless the...
I ran into a merge conflict. How can I abort the merge?
...and the origin, the origin should always win, I always git fetch and git rebase origin. This actually makes my merges and conflicts few and far between.
– Kzqai
May 13 '10 at 16:20
...