【发布时间】：2021-09-12 06:12:10
【问题描述】：
单击时我试图在 vis.js 库中为灰色节点复制脚本，它成功但实际上是 shape 类型。但我的情况是我使用image 类型。发生的事情是图像没有改变。如何为我的案例实现以下代码（使用图像）。
假设我有 2 张图像（Image_A 和 Image_B），Image_A 是默认彩色图像，Image_B 是灰色图像。因此，当单击特定节点时，该节点将使用 Image_A，其他为 Image_B。在所有节点外点击时都会使用 Image_A。
仅举例：
来源链接：Grey out other node
var network;
var allNodes;
var highlightActive = false;
var nodes;
function redrawAll() {
var allNodes = [{
id: 1,
label: "Node A_1",
image: "https://www.freeiconspng.com/uploads/letter-a-icon-4.png"
},{
id: 2,
label: "Node A_2",
image: "https://www.freeiconspng.com/uploads/letter-a-icon-4.png"
},{
id: 3,
label: "Node B_1",
image: "https://www.freeiconspng.com/uploads/letter-b-icon-png-23.png"
},{
id: 4,
label: "Node B_2",
image: "https://www.freeiconspng.com/uploads/letter-b-icon-png-23.png"
},
];
// Create edge data array
var allEdges = [
{ id: "1_2", from: 1, to: 2 },
{ id: "2_3", from: 2, to: 3 },
{ id: "2_4", from: 2, to: 4 },
{ id: "4_1", from: 4, to: 1 }
]
var container = document.getElementById('mynetwork');
var nodes = new vis.DataSet(allNodes);
var edges = new vis.DataSet(allEdges);
var data = { nodes: nodes, edges: edges };
var options = {};
network = new vis.Network(container, data, options);
// get a JSON object
allNodes = nodes.get({ returnType: "Object" });
network.on("click", neighbourhoodHighlight);
}
function neighbourhoodHighlight(params) {
// if something is selected:
if (params.nodes.length > 0) {
highlightActive = true;
var i, j;
var selectedNode = params.nodes[0];
var degrees = 2;
// mark all nodes as hard to read.
for (var nodeId in allNodes) {
allNodes[nodeId].color = "rgba(200,200,200,0.5)";
if (allNodes[nodeId].hiddenLabel === undefined) {
allNodes[nodeId].hiddenLabel = allNodes[nodeId].label;
allNodes[nodeId].label = undefined;
}
}
var connectedNodes = network.getConnectedNodes(selectedNode);
var allConnectedNodes = [];
// get the second degree nodes
for (i = 1; i < degrees; i++) {
for (j = 0; j < connectedNodes.length; j++) {
allConnectedNodes = allConnectedNodes.concat(network.getConnectedNodes(connectedNodes[j]));
}
}
// all second degree nodes get a different color and their label back
for (i = 0; i < allConnectedNodes.length; i++) {
allNodes[allConnectedNodes[i]].color = "rgba(150,150,150,0.75)";
if (allNodes[allConnectedNodes[i]].hiddenLabel !== undefined) {
allNodes[allConnectedNodes[i]].label = allNodes[allConnectedNodes[i]].hiddenLabel;
allNodes[allConnectedNodes[i]].hiddenLabel = undefined;
}
}
// all first degree nodes get their own color and their label back
for (i = 0; i < connectedNodes.length; i++) {
allNodes[connectedNodes[i]].color = undefined;
if (allNodes[connectedNodes[i]].hiddenLabel !== undefined) {
allNodes[connectedNodes[i]].label = allNodes[connectedNodes[i]].hiddenLabel;
allNodes[connectedNodes[i]].hiddenLabel = undefined;
}
}
// the main node gets its own color and its label back.
allNodes[selectedNode].color = undefined;
if (allNodes[selectedNode].hiddenLabel !== undefined) {
allNodes[selectedNode].label = allNodes[selectedNode].hiddenLabel;
allNodes[selectedNode].hiddenLabel = undefined;
}
}
else if (highlightActive === true) {
// reset all nodes
for (var nodeId in allNodes) {
allNodes[nodeId].color = undefined;
if (allNodes[nodeId].hiddenLabel !== undefined) {
allNodes[nodeId].label = allNodes[nodeId].hiddenLabel;
allNodes[nodeId].hiddenLabel = undefined;
}
}
highlightActive = false;
}
// transform the object into an array
var updateArray = [];
for (nodeId in allNodes) {
if (allNodes.hasOwnProperty(nodeId)) {
updateArray.push(allNodes[nodeId]);
}
}
nodes.update(updateArray);
}
redrawAll();
【问题讨论】：
-
您好，您的代码中的
nodesDataset是什么？我在那里变得不确定..你能让这个可运行吗？ -
嗨，很抱歉，我已经更新了代码，
nodesDataset已更改为nodes，已经检查了整个代码在我的本地是否可用。
标签： jquery vis.js vis.js-network