大约有 46,000 项符合查询结果(耗时:0.0250秒) [XML]

https://stackoverflow.com/ques... 

How to check if an option is selected?

... UPDATE A more direct jQuery method to the option selected would be: var selected_option = $('#mySelectBox option:selected'); Answering the question .is(':selected') is what you are looking for: $('#mySelectBox option').each(function() { if($(this).is(':selected')) ....
https://stackoverflow.com/ques... 

How to convert DateTime to VarChar

...yDateTime DATETIME SET @myDateTime = '2008-05-03' -- -- Convert string -- SELECT LEFT(CONVERT(VARCHAR, @myDateTime, 120), 10) share | improve this answer | follow ...
https://stackoverflow.com/ques... 

sql query to return differences between two tables

...colum C, here are the records, which are present in table A but not in B: SELECT A.* FROM A LEFT JOIN B ON (A.C = B.C) WHERE B.C IS NULL To get all the differences with a single query, a full join must be used, like this: SELECT A.*, B.* FROM A FULL JOIN B ON (A.C = B.C) WHERE A.C IS NUL...
https://stackoverflow.com/ques... 

Best way to unselect a in jQuery?

What is the best way, using jQuery, to elegantly unselect the option? 15 Answers 15 ...
https://stackoverflow.com/ques... 

Efficient SQL test query or validation query that will work across all (or most) databases

...er a little bit of research along with help from some of the answers here: SELECT 1 H2 MySQL Microsoft SQL Server (according to NimChimpsky) PostgreSQL SQLite SELECT 1 FROM DUAL Oracle SELECT 1 FROM any_existing_table WHERE 1=0 or SELECT 1 FROM INFORMATION_SCHEMA.SYSTEM_USERS or CALL NOW() HS...
https://stackoverflow.com/ques... 

jQuery Validate Required Select

I am trying to validate html select element using jQuery Validate plugin. I set "required" rule to true but it always passes validation because zero index is chosed by default. Is there any way to define empty value that is used by required rule? ...
https://stackoverflow.com/ques... 

Using union and order by clause in mysql

...criteria from a table based on distance for a search on my site. The first select query returns data related to the exact place search . The 2nd select query returns data related to distance within 5 kms from the place searched. The 3rd select query returns data related to distance within 5-15 kms f...
https://stackoverflow.com/ques... 

jQuery select2 get value of select tag?

... $("#first").val(); // this will give you value of selected element. i.e. 1,2,3. share | improve this answer | follow | ...
https://stackoverflow.com/ques... 

Is there an onSelect event or equivalent for HTML ?

I have an input form that lets me select from multiple options, and do something when the user changes the selection. Eg, ...
https://stackoverflow.com/ques... 

How to Select Columns in Editors (Atom,Notepad++, Kate, VIM, Sublime, Textpad,etc) and IDEs (NetBean

How to select columns in Editors and IDEs to columnar delete, insert or replace some characters ? 21 Answers ...