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Make page to tell browser not to cache/preserve input values
Most browsers cache form input values. So when the user refreshes a page, the inputs have the same values.
5 Answers
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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.
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How to get current time in milliseconds in PHP?
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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 ...
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
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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...
How are parameters sent in an HTTP POST request?
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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'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
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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 ...
Rails ActiveRecord date between
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Ok but from the form I get this: {"written_at(4i)"=>"18", "written_at(5i)"=>"56", "content"=>"rrrrrr", "written_at(1i)"=>"2010", "written_at(2i)"=>"5", "written_at(3i)"=>"4"} How can I build an object to use beginning_of_d...
Best way to store time (hh:mm) in a database
...in question, each country has its time offset from others, the way time is formatted in each country vary.
It's a lot to digest, but the long and short of it is impossible for such a complex scenario to have a simple solution.
Some corners can be cut, but there are those where it is wiser not to
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