如何在Firefox中捕获用户选择文本事件

Question

I want to catch the event when the user select a text in Firefox page like IDM add-on (or IE8+) show a button when user select text.

Can anyone help me?

Answer 1

您可以分别为鼠标和键盘选择附加mouseup事件侦听器和keypress侦听器，然后使用window.getSelection()来判断是否选择了任何文本。

Answer 2

Somewhat surprisingly, there's no simple way to do this. IE has a select event that is implemented on all elements but other browsers have never extended this beyond inputs. You'll have to handle keyup and mouseup events for the whole document, and write some code to compare the current selection with the previous selection from when the event handler last ran.