大约有 45,000 项符合查询结果(耗时:0.0440秒) [XML]

https://stackoverflow.com/ques... 

Using querySelectorAll to retrieve direct children

... Good question. At the time it was asked, a universally-implemented way to do "combinator rooted queries" (as John Resig called them) did not exist. Now the :scope pseudo-class has been introduced. It is not supported on [pre-Chrominum] versions of Edg...
https://stackoverflow.com/ques... 

What is the difference between a mutable and immutable string in C#?

..."cannot change" respectively. The meaning of the words is the same in the IT context; i.e. a mutable string can be changed, and an immutable string cannot be changed. The meanings of these words are the same in C# / .NET as in other programming languages / environments, though (obviously) the n...
https://stackoverflow.com/ques... 

What is the purpose of a stack? Why do we need it?

... UPDATE: I liked this question so much I made it the subject of my blog on November 18th 2011. Thanks for the great question! I've always wondered: what is the purpose of the stack? I assume you mean the evaluation stack of the MSIL language, and not the actual pe...
https://stackoverflow.com/ques... 

Git “error: The branch 'x' is not fully merged”

...changed in response to the commments. Thanks @slekse That is not an error, it is a warning. It means the branch you are about to delete contains commits that are not reachable from any of: its upstream branch, or HEAD (currently checked out revision). In other words, when you might lose commits¹. I...
https://stackoverflow.com/ques... 

Static class initializer in PHP

I have an helper class with some static functions. All the functions in the class require a ‘heavy’ initialization function to run once (as if it were a constructor). ...
https://stackoverflow.com/ques... 

How to prevent ajax requests to follow redirects using jQuery

... to access a web service, but the server, instead of returning a response with a status code describing a problem, the request is redirected to a page with a 200 header, describing the problem. I can't make any changes to this, so I need to solve it on the client somehow. ...
https://stackoverflow.com/ques... 

Is it possible for a computer to “learn” a regular expression by user-provided examples?

Is it possible for a computer to "learn" a regular expression by user-provided examples? 10 Answers ...
https://stackoverflow.com/ques... 

delete a.x vs a.x = undefined

Is there any substantial difference in doing either of these? 9 Answers 9 ...
https://stackoverflow.com/ques... 

Why is extending native objects a bad practice?

...ing the native objects is a bad practice. But why? Do we get a perfomance hit? Do they fear that somebody does it "the wrong way", and adds enumerable types to Object , practically destroying all loops on any object? ...
https://stackoverflow.com/ques... 

Is it possible to force ignore the :hover pseudoclass for iPhone/iPad users?

I have some css menus on my site that expand with :hover (without js) 15 Answers 15 ...