You create a pure vector-based drawing here and render a line here from source node to destination node. 您创建了一个纯粹基于矢量的绘图,并且显示了一条从源节点到目标节点的连线。
The render tree has at least one node for every node of the DOM tree that needs to be displayed ( hidden DOM elements don't have a corresponding node in the render tree ). 渲染树中为每个需要显示的DOM树节点存放至少一个节点(隐藏DOM元素在渲染树中没有对应节点)。
To render the detail view we used the node - 为了显示详细视图,我们使用了node-