Vue gantt component

  1. How does vue2.x implement custom methods using custom buttons

2.Here’s what I’m going to do, add custom methods to that flag, plus button

Hello Jinhua,
Javascript frameworks are beyond our support so I cannot suggest to you how to implement it in a Vue-way. But I know that it is possible to attach the function to a Gantt property, then it should work.
Here is a demo project that demonstrates how it might be implemented: