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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, ...
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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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How to make an Android Spinner with initial text “Select One”?

I want to use a Spinner that initially (when the user has not made a selection yet) displays the text "Select One". When the user clicks the spinner, the list of items is displayed and the user selects one of the options. After the user has made a selection, the selected item is displayed in the Spi...
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How to order by with union in SQL?

Is it possible to order when the data is come from many select and union it together? Such as 8 Answers ...
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select、poll、epoll之间的区别总结[整理] - C/C++ - 清泛网 - 专注C/C++及内核技术

select、poll、epoll之间的区别总结[整理]select,poll,epoll都是IO多路复用的机制。I O多路复用就通过一种机制,可以监视多个描述符,一旦某个描述符就绪(一般是读就绪或者写就绪...select,poll,epoll都是IO多路复用的机制。I/O多路...
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How can I SELECT rows with MAX(Column value), DISTINCT by another column in SQL?

... You are so close! All you need to do is select BOTH the home and its max date time, then join back to the topten table on BOTH fields: SELECT tt.* FROM topten tt INNER JOIN (SELECT home, MAX(datetime) AS MaxDateTime FROM topten GROUP BY home) groupedtt...
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Is it possible to style a select box? [closed]

I've got an HTML select box that I need to style. I'd prefer to use just CSS but if I have to I'll use jQuery to fill in the gaps. ...
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Using $_POST to get select option value from HTML

I use select as below: 8 Answers 8 ...
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Is it possible to use JS to open an HTML select to show its option list? [duplicate]

Is it possible to use JavaScript to open an HTML select to show its option list? 11 Answers ...
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is it possible to select EXISTS directly as a bit?

...workaround. If you must return a conditional bit 0/1 another way is to: SELECT CAST( CASE WHEN EXISTS(SELECT * FROM theTable where theColumn like 'theValue%') THEN 1 ELSE 0 END AS BIT) Or without the cast: SELECT CASE WHEN EXISTS( SELECT 1 FROM theTable WHERE theColumn LI...