jQuery更改输入文本值不起作用

Question

I am trying to do this

$('input').val($('input').val()+"^2");

so each input field in the page (I have only one field) will have two extra letters ^2

the strange thing is that it only append 2 and ignore the ^ symbol. any idea why this strange behavior occurs?

EDIT: The problem was that there were another part in the code removes all symbols from the input field once they are inserted. So I changed it to ignore this symbol. Thanks guys.

Answer 1

适用于我： jsFiddle示例 。

Answer 2

Try

^

or escape the carrot:

/^

It renders as ^

Answer 3

Try escaping that using a backslash \\

$('input').val($('input').val()+"\^2");​

Or use the Unicode equivalent of the caret

CHECK FIDDLE