大约有 40,000 项符合查询结果（耗时：0.0587秒） [XML]
Include jQuery in the JavaScript Console
...ebsite I would like to get the number of rows in a table. I know this is really easy with jQuery.
20 Answers
...
Using querySelector with IDs that are numbers
...haracter 1 is U+0031, so you would escape it as \000031 or \31 .
Basically, to escape any numeric character, just prefix it with \3 and append a space character ( ). Yay Unicode!
So your code would end up as (CSS first, JS second):
#\31 {
background: hotpink;
}
document.getElementById(...
How to check if a URL is valid
...ds.
– Steve Madsen
Sep 20 '11 at 15:32
3
Applying awendt's comment to your proposals: 'http://:59...
System.Security.SecurityException when writing to Event Log
... ok on developer machines, where you do not use deployment process to install application.
However if you deploy your application to other machine(s), consider to register event log sources during installation as suggested in SailAvid's and Nicole Calinoiu's answers.
I am using PowerShell function...
Can anyone explain IEnumerable and IEnumerator to me? [closed]
...n you write code like:
foreach (Foo bar in baz)
{
...
}
it's functionally equivalent to writing:
IEnumerator bat = baz.GetEnumerator();
while (bat.MoveNext())
{
bar = (Foo)bat.Current
...
}
By "functionally equivalent," I mean that's actually what the compiler turns the code into. Yo...
The simplest way to resize an UIImage?
...e of the resizing options.
Or you can use this utility method, if you actually need to resize an image:
+ (UIImage *)imageWithImage:(UIImage *)image scaledToSize:(CGSize)newSize {
//UIGraphicsBeginImageContext(newSize);
// In next line, pass 0.0 to use the current device's pixel scaling fa...
Random Gaussian Variables
...uller polar method:
public sealed class GaussianRandom
{
private bool _hasDeviate;
private double _storedDeviate;
private readonly Random _random;
public GaussianRandom(Random random = null)
{
_random = random ?? new Random();
}
/// <summary>
/// Obta...
How to find where gem files are installed
I can finds gems that are installed using gem list , but it doesn't show me where the gems are installed.
10 Answers
...
Pretty-print an entire Pandas Series / DataFrame
...: # more options can be specified also
print(df)
This will automatically return the options to their previous values.
If you are working on jupyter-notebook, using display(df) instead of print(df) will use jupyter rich display logic (like so).
...
Catch all JavaScript errors and send them to server
I wondered if anyone had experience in handling JavaScript errors globally and send them from the client browser to a server.
...