大约有 47,000 项符合查询结果(耗时:0.0220秒) [XML]

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Get selected value/text from Select on change

I need to get the value of the selected option in javascript: does anyone know how to get the selected value or text, please tell how to write a function for it. I have assigned onchange() function to select so what do i do after that? ...
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jQuery get value of select onChange

I was under the impression that I could get the value of a select input by doing this $(this).val(); and applying the onchange parameter to the select field. ...
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How do you use the “WITH” clause in MySQL?

...s mentioned, you provided a poor example - there's no need to perform a subselect if you aren't altering the output of the columns in any way: SELECT * FROM ARTICLE t JOIN USERINFO ui ON ui.user_userid = t.article_ownerid JOIN CATEGORY c ON c.catid = t.article_categoryid WHERE t....
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Firefox ignores option selected=“selected”

If you change a dropdown and refresh the page, Firefox seems to ignore the selected attribute. 20 Answers ...
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What is the difference D3 datum vs. data?

...rs here on SO are not complete as they only cover the case when you invoke selection.data and selection.datum with an input data parameter. Even in that scenario, the two behave differently if the selection is a single element versus when it contains multiple elements. Moreover, both of these method...
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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 ...
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select * vs select column

If I just need 2/3 columns and I query SELECT * instead of providing those columns in select query, is there any performance degradation regarding more/less I/O or memory? ...
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Rails select helper - Default selected value, how?

... This should do it: <%= f.select :project_id, @project_select, :selected => params[:pid] %> share | improve this answer | ...
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Vim: faster way to select blocks of text in visual mode

I have been using vim for quite some time and am aware that selecting blocks of text in visual mode is as simple as SHIFT + V and moving the arrow key up or down line-by-line until I reach the end of the block of text that I want selected. ...
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What's the difference between RANK() and DENSE_RANK() functions in oracle?

...s a simple test script you can play with to see what happens: with q as ( select 10 deptno, 'rrr' empname, 10000.00 sal from dual union all select 11, 'nnn', 20000.00 from dual union all select 11, 'mmm', 5000.00 from dual union all select 12, 'kkk', 30000 from dual union all select 10, 'fff', 4000...