< H2 > question: as shown below: < H2 > this is a flowchart configuration page. The nodes in the whole flowchart can be connected in a lifetime. I can traverse all the lines in the whole graph, and each line has two anchor points: sourceId and target...
problem description The requirement is like this: when I click the right mouse button to come out a menu, and then click New, there will be a right editing mania. When I click Save , I will create a new menu where I click the right mouse button. This...