Question

I am wondering if it s possible to restore dropdown values once they have been cleared by jquery?

在这种例子中,你可以看到,当你检查一个检查箱时,检查箱就会失控并清除相应的下降。检查箱一旦被封不动,价值就会消失。

在检查箱时,是否可以只清除这些数值?

http://jsfiddle.net/ZXSKH/32/"rel=“nofollow> http://jsfiddle.net/ZXSKH/32/。

Answer 1

我对是否有必要提出质疑。回答问题......

http://jsfiddle.net/ZXSKH/38/"rel=“nofollow> http://jsfiddle.net/ZXSKH/38/。

Answer 2

Removing the options is unnecessary since you re already disabling the selects. Simply reduce the width of the disabled selected to simulate the removal of the options:

//Remove this line
$( div[day_id="  + $(this).val() +  "] select ).find( option ).remove()

//Replace with this:
selects.css("width", "22px");

//Don t forget to restore the width when enabling the selects:
selects.css("width", "75px");

http://jsfiddle.net/ZXSKH/34/“rel=“nofollow”>a working fiddle。

Answer 3

为什么需要删除某些选择?

http://jsfiddle.net/ZXSKH/36/"rel=“nofollow> http://jsfiddle.net/ZXSKH/36/。

u可以尝试这样做。 2. 改变这一方向

$( div[day_id=" +$(this).val()+ "] select ).find( option ).remove()

to

$( div[day_id=" +$(this).val()+ "] select ).attr( disabled ,  )

友情链接