大约有 19,000 项符合查询结果（耗时：0.0253秒） [XML]
What is the _snowman param in Ruby on Rails 3 forms for?
In Ruby on Rails 3 (currently using Beta 4), I see that when using the form_tag or form_for helpers there is a hidden field named _snowman with the value of ☃ ( Unicode \x9731) showing up.
...
Prevent any form of page refresh using jQuery/Javascript
.... Countless sites on the internet prevent a browser refresh if you have a form that is dirty, alerting you to the fact that you may lose your changes. Not sure why this is "breaking fundamental browser features".
– Siraris
Mar 31 '18 at 3:45
...
How to use PrimeFaces p:fileUpload? Listener method is never invoked or UploadedFile is null / throw
...nts apply to all PrimeFaces versions:
The enctype attribute of the <h:form> needs to be set to multipart/form-data. When this is absent, the ajax upload may just work, but the general browser behavior is unspecified and dependent on form composition and webbrowser make/version. Just always s...
What is Rack middleware?
...uthentication, name/password?
Authorisation: "is the user authorised to perform this particular task?", i.e. role-based security.
Caching: have I processed this request already, can I return a cached result?
Decoration: how can I enhance the request to make downstream processing better?
Performance ...
How are parameters sent in an HTTP POST request?
...
The values are sent in the request body, in the format that the content type specifies.
Usually the content type is application/x-www-form-urlencoded, so the request body uses the same format as the query string:
parameter=value&also=another
When you use a file upl...
What is the proper declaration of main?
...e that all of this applies only when compiling for a hosted environment (informally, an environment where you have a full standard library and there's an OS running your program). It is also possible to compile a C++ program for a freestanding environment (for example, some types of embedded system...
How to get current time in milliseconds in PHP?
...
Short answer:
64 bits platforms only!
function milliseconds() {
$mt = explode(' ', microtime());
return ((int)$mt[1]) * 1000 + ((int)round($mt[0] * 1000));
}
[ If you are running 64 bits PHP then the constant PHP_INT_SIZE equals to 8 ]
Long ...
Disable browser 'Save Password' functionality
... deal with all of the paranoia around dealing with PHI (Protected Health Information). Don't get me wrong, I'm all for doing everything possible to protect people's personal information (health, financial, surfing habits, etc.), but sometimes people get a little too jumpy.
...
What's the difference between encoding and charset?
...at it uses may be specified by name or may be given explicitly, or the platform's default charset may be accepted.". However, what they mean is "encoding".
– David Tonhofer
Jan 27 '14 at 10:29
...
Convert JS Object to form data
How can I can convert my JS Object to FormData ?
18 Answers
18
...