Disable dragging nodes outside of area in cytoscape.js

问题

I am using cytoscape.js.

I have allowed the user to drag the nodes, but right now it is also possible to drag the node outside of the 'canvas'.

I have looked at the options at http://js.cytoscape.org/#core/initialisation but I don't know how to make sure the nodes cannot leave the visible area <div id="cy"></div>.

回答1:

Try the automove extension: https://github.com/cytoscape/cytoscape.js-automove

It lets you set rules for node position, like constraining within the current viewport or a specified region.

来源：https://stackoverflow.com/questions/39280268/disable-dragging-nodes-outside-of-area-in-cytoscape-js