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On select change, get data attribute value
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You need to find the selected option:
$(this).find(':selected').data('id')
or
$(this).find(':selected').attr('data-id')
although the first method is preferred.
shar...
Is JavaScript an untyped language?
...r
Strongly typed means there is a compiler, and it wants you an explicit cast from string to integer.
(int) "12345" * 1 === 12345
In either case, some compiler's features can implicitly alter the instruction during compile-time to do conversions for you, if it can determine that is the right th...
How to change root logging level programmatically for logback
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If you do this and get a ClassCastException, it's most likely due to having multiple SLF4J bindings on the classpath. The log output will indicate this and which bindings are present to let you determine which one(s) you need to exclude.
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Best way to unselect a in jQuery?
What is the best way, using jQuery, to elegantly unselect the option?
15 Answers
15
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Find the number of columns in a table
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SELECT COUNT(*)
FROM INFORMATION_SCHEMA.COLUMNS
WHERE table_catalog = 'database_name' -- the database
AND table_name = 'table_name'
share
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How do SQL EXISTS statements work?
... criteria -- this is why it can be faster than IN. Also be aware that the SELECT clause in an EXISTS is ignored - IE:
SELECT s.*
FROM SUPPLIERS s
WHERE EXISTS (SELECT 1/0
FROM ORDERS o
WHERE o.supplier_id = s.supplier_id)
...should hit a division by zero error...
jquery select change event get selected option
I bound an event on the change event of my select elements with this:
9 Answers
9
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What is the “N+1 selects problem” in ORM (Object-Relational Mapping)?
The "N+1 selects problem" is generally stated as a problem in Object-Relational mapping (ORM) discussions, and I understand that it has something to do with having to make a lot of database queries for something that seems simple in the object world.
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Is unsigned integer subtraction defined behavior?
...ake sure that the result is signed, then stored it into signed variable or cast it to signed. When you want to get the difference between numbers and make sure that the modular arithmetic will not be applied, then you should consider using abs() function defined in stdlib.h:
int c = five - seven; ...
What is the Swift equivalent of isEqualToString in Objective-C?
... operator because String in swift is of type struct not class. If you type cast your text/string as NSString you can compare using === operator.
– sanjana
Jun 14 '15 at 1:05
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