javascript “可拖动”仅垂直拖动？

"Draggable" Drag vertical only?

提问by ModernDesigner

I have this page that prompts you to drag it upwards to reveal the actual page. I want to know if there's any option so that you only can drag it vertically (Y-axis) i.e. "up". Is there any way to do this?

我有这个页面，提示你向上拖动它以显示实际页面。我想知道是否有任何选项可以让您只能垂直（Y 轴）拖动它，即“向上”。有没有办法做到这一点？

回答by techfoobar

Yes, this is possible.

是的，这是可能的。

$( "#draggable" ).draggable({ axis: "y" });

Check this: http://jqueryui.com/draggable/#constrain-movement

检查这个：http: //jqueryui.com/draggable/#constrain-movement

回答by David Hellsing

If you are using jQuery UI, there is an axisoption:

如果您使用的是 jQuery UI，则有一个axis选项：

$(elem).draggable({ axis: 'y' });