大约有 47,000 项符合查询结果（耗时：0.0711秒） [XML]
How do I find out which DOM element has the focus?
...
Use document.activeElement, it is supported in all major browsers.
Previously, if you were trying to find out what form field has focus, you could not. To emulate detection within older browsers, add a "focus" event handler to all fields and record the last-focused field...
How to fully delete a git repository created with init?
...
Git keeps all of its files in the .git directory. Just remove that one and init again.
If you can't find it, it's because it is hidden.
In Windows 7, you need to go to your folder, click on Organize on the top left, then click on Fo...
How to get a list of MySQL views?
I'm looking for a way to list all views in a database.
9 Answers
9
...
Formatting floats without trailing zeros
...ptimization is bad, but it's because the OP's trick requires you to remove all zeroes THEN all decimals and then NOT MORE ZEROS. Gabriel's approach just removes all zeros and periods until it hits something else.
– Scott Stafford
May 11 at 14:47
...
Understanding checked vs unchecked exceptions in Java
.... these that you should explicitly catch or rethrow) should not be used at all. They were eliminated in C# for example, and most languages don't have them. So you can always throw a subclass of RuntimeException (unchecked exception)
However, I think checked exceptions are useful - they are used whe...
When to use Vanilla JavaScript vs. jQuery?
... there are certain practices using javascript, instead of jQuery, that actually enable you to write less and do ... well the same amount. And may also yield performance benefits.
...
std::function vs template
...buggy program to your customer.
Moreover, as you correctly pointed out, calls to template functions are resolved statically (i.e. at compile time), so the compiler has all the necessary information to optimize and possibly inline the code (which would not be possible if the call were performed thr...
How do I force git pull to overwrite everything on every pull?
...sitory that has three developer repositories pulling and pushing to it normally.
7 Answers
...
linux下iptables配置详解 - 更多技术 - 清泛网 - 专注C/C++及内核技术
... prot opt source destination
Chain RH-Firewall-1-INPUT (0 references)
target prot opt source destination
ACCEPT all -- 0.0.0.0/0 0.0.0.0/0
ACCEPT icmp -- 0.0.0.0/0 0.0.0.0/0 ...