大约有 43,000 项符合查询结果(耗时:0.0246秒) [XML]

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jQuery If DIV Doesn't Have Class “x”

...y I need to do an if statement to see if $this doesn't contain the class '.selected'. 7 Answers ...
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How to get next/previous record in MySQL?

... next: select * from foo where id = (select min(id) from foo where id > 4) previous: select * from foo where id = (select max(id) from foo where id < 4) ...
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ruby on rails f.select options with custom attributes

I have a form select statement, like this: 5 Answers 5 ...
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Row Offset in SQL Server

... I would avoid using SELECT *. Specify columns you actually want even though it may be all of them. SQL Server 2005+ SELECT col1, col2 FROM ( SELECT col1, col2, ROW_NUMBER() OVER (ORDER BY ID) AS RowNum FROM MyTable ) AS MyDerivedTable...
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Change select box option background color

I have a select box and I'm trying to change the background color of the options when the select box has been clicked and shows all the options. ...
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Remove outline from select box in FF

Is it possible to remove the dotted line surrounding a selected item in a select element? 12 Answers ...
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Changing selection in a select with the Chosen plugin

I'm trying to change the currently selected option in a select with the Chosen plugin. 4 Answers ...
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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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quick random row selection in Postgres

... You might want to experiment with OFFSET, as in SELECT myid FROM mytable OFFSET floor(random()*N) LIMIT 1; The N is the number of rows in mytable. You may need to first do a SELECT COUNT(*) to figure out the value of N. Update (by Antony Hatchkins) You must use floor he...
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Getting value of select (dropdown) before change

The thing I want to achieve is whenever the <select> dropdown is changed I want the value of the dropdown before change. I am using 1.3.2 version of jQuery and using on change event but the value I am getting over there is after change. ...