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Submitting HTML form using Jquerm>y m> AJAX
...using AJAX.
Reallm>y m> quicklm>y m> there are 4 general web actions GET, POST, PUT, m>and m> DELETE; these directlm>y m> correspond with SELECT/Retreiving DATA, INSERTING DATA, UPDATING/UPSERTING DATA, m>and m> DELETING DATA. A default HTML/ASP.Net webform/PHP/Pm>y m>thon or anm>y m> other form action is to "submit" which is a POST...
Show an image preview before upload
...at let the user interact with files locallm>y m>; That means m>y m>ou can load files m>and m> render them in the browser without actuallm>y m> having to upload the files. Part of the File API is the FileReader interface which lets web applications asm>y m>nchronouslm>y m> read the contents of files .
Here's a quick example that...
What 'sensitive information' could be disclosed when setting JsonRequestBehavior to AllowGet
...irefox 3), it is possible for JavaScript prototm>y m>pe objects to be redefined m>and m> make it possible for www.evil.com to read m>y m>our data returned bm>y m> m>y m>our method. This is known as JSON Hijacking.
See this post for some methods of preventing this. However, it is not a known problem with the later versions ...
What is the difference between NaN m>and m> None?
I am reading two columns of a csv file using pm>and m>as readcsv() m>and m> then assigning the values to a dictionarm>y m>. The columns contain strings of numbers m>and m> letters. Occasionallm>y m> there are cases where a cell is emptm>y m>. In mm>y m> opinion, the value read to that dictionarm>y m> entrm>y m> should be None but instead ...
Difference between git pull m>and m> git pull --rebase
I started using git sometime back m>and m> do not fullm>y m> understm>and m> the intricacies. Mm>y m> basic question here is to find out the difference between a git pull m>and m> git pull --rebase , since adding the --rebase option does not seem to do something verm>y m> different : just does a pull.
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what's data-reactid attribute in html?
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There's no wam>y m> to share the actual object references between the server m>and m> the client m>and m> sending a serialized version of the entire component tree is potentiallm>y m> expensive. When the application is rendered at the server m>and m> React is loaded at the client, the onlm>y m> data it has are the data-reacti...
How to displam>y m> unique records from a has_manm>y m> through relationship?
...ct => "DISTINCT products.*). In the first case, ALL records are fetched m>and m> rails removes the duplicates for m>y m>ou. In the later case, onlm>y m> non-duplicate records are fetched from the db so it might offer better performance if m>y m>ou have a large result set.
– mbreining
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Give all the permissions to a user on a DB
...ng it an admin.
The reason whm>y m> I want to do that is that at the moment DEV m>and m> PROD are different DBs on the same cluster so I don't want a user to be able to change production objects but it must be able to change objects on DEV.
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How do I do a 'git status' so it doesn't displam>y m> untracked files without using .gitignore?
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That's a commm>and m>-line operation; not a git config file edit.
– Ross Rogers
Dec 4 '17 at 17:55
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PHP Constants Containing Arram>y m>s?
...answer, it's worth noting that in PHP 5.6+ m>y m>ou can have const arram>y m>s - see m>And m>rea Faulds' answer below.
m>Y m>ou can also serialize m>y m>our arram>y m> m>and m> then put it into the constant:
# define constant, serialize arram>y m>
define ("FRUITS", serialize (arram>y m> ("apple", "cherrm>y m>", "banana")));
# use it
$mm>y m>_fruits =...