问题
I can't find a related question to give me an idea about how to do this.
I've seen some topics about how to know if the right-click button was clicked but I'd like to be able to capture the value that's selected on a context menu after right click.
Any idea how I could achieve it?
回答1:
In a browser, you can:
a) ignore the right click and let the browser itself handle it (which usually means a context menu will be shown)
XOR
b) handle the right click yourself, which means that the browser won't show its context menu.
You can't have both a) and b), they're mutually exclusive. If you want a right-click context menu on a webpage, you need to fake it yourself - for example, see this tutorial and the result.
来源：https://stackoverflow.com/questions/9600420/how-to-get-retrieve-context-menu-value-after-right-click-with-javascript