我们可以在react + graph中更改节点的颜色吗

Question

I am using the below package. I have the first and last node. I want to change its background color.

nodes: [
      { id: 'Node 1', label: "Node 1", title: "node 1 tootip text" ,first:true},
      { id: 2, label: "Node 2", title: "node 2 tootip text" },
      { id: 3, label: "Node 3", title: "node 3 tootip text" },
      { id: 4, label: "Node 4", title: "node 4 tootip text" },
      { id: 5, label: "Node 5", title: "node 5 tootip text",last:true }
    ],

first node have first:true and last:true . can we change their background color ?? like red and green https://www.npmjs.com/package/react-graph-vis

here is my code https://stackblitz.com/edit/react-yvpt5j

Answer 1

Just add color property

Working Demo

 const graph = {
    nodes: [
      { id: 'Node 1', label: "Node 1", title: "node 1 tootip text" ,first:true,  color: "red" },
      { id: 2, label: "Node 2", title: "node 2 tootip text" },
      { id: 3, label: "Node 3", title: "node 3 tootip text" },
      { id: 4, label: "Node 4", title: "node 4 tootip text" },
      { id: 5, label: "Node 5", title: "node 5 tootip text",last:true, color: 'Green' }
    ],
    edges: [
      { from: 'Node 1', to: 2,label:'dddddd' },
      { from: 'Node 1', to: 3,label:'adasd' },
      { from: 2, to: 4 },
      { from: 2, to: 5 }
    ]
  };

or you can change it dynamically on the basic of first and last properties

 let obj = { nodes: [ { id: 'Node 1', label: "Node 1", title: "node 1 tootip text" ,first:true}, { id: 2, label: "Node 2", title: "node 2 tootip text" }, { id: 3, label: "Node 3", title: "node 3 tootip text" }, { id: 4, label: "Node 4", title: "node 4 tootip text" }, { id: 5, label: "Node 5", title: "node 5 tootip text",last:true } ] }; let updatedNodes = obj.nodes.map(( o ) => { let {first, last} = o; first ? o.color = 'red' : last ? o.color = 'green' : null; return {...o} }); console.log(updatedNodes);

Answer 2

Only add color:"red" and color:"green" on your nodes.

like this:

nodes: [
  { id: 'Node 1', label: "Node 1", title: "node 1 tootip text" ,first:true, color: "red"},
  { id: 2, label: "Node 2", title: "node 2 tootip text" },
  { id: 3, label: "Node 3", title: "node 3 tootip text" },
  { id: 4, label: "Node 4", title: "node 4 tootip text" },
  { id: 5, label: "Node 5", title: "node 5 tootip text",last:true, color: "green" }
],