How to use Vue and jsmind to implement mind map node links and external web page references?

How to use Vue and jsmind to implement mind map node links and external web page references?

Introduction:
Mind map is an effective tool that can help us organize our thoughts, think about problems and better understand the relationship between information. Vue is a popular JavaScript framework, and jsmind is a lightweight JavaScript mind mapping library. This article will introduce how to use Vue and jsmind to implement mind map node links and external web page references.

1. Preparation
First of all, you need to prepare some necessary resources. Please make sure that the relevant files of Vue and jsmind have been imported. They can be imported through cdn or downloaded for local use.

2. Initialize the mind map
In the Vue life cycle hook function created, you can initialize the mind map. First, define an empty jsmind object, and then pass in a DOM element and configuration parameters through the jsmind.init function to initialize the mind map.

data() {
  return {
    mind: null,
    container: null,
    options: {
      container: "jsmind_container",
      editable: true // 是否可编辑
    }
  }
},
created() {
  this.container = document.getElementById(this.options.container);
  this.mind = jsMind.init(this.container, this.options);
}

3. Add node links
The node links of the mind map can jump between different nodes. First, define an array in Vue's data to store node links.

data() {
  return {
    links: [
      {
        from: "node1",
        to: "node2"
      },
      {
        from: "node2",
        to: "node3"
      }
    ]
  }
},

Next, after the initialization function of jsmind, you need to monitor the click event of the node through the api function add_event provided by the author of jsmind. When the node is clicked, the callback function will be triggered, and the node link jump can be implemented in the callback function.

created() {
  // ...
  this.mind.add_event(this.handleNodeClick);
},
methods: {
  handleNodeClick(event) {
    const selectedNodeId = event.target.getAttribute("nodeid");
    const selectedLink = this.links.find(link => link.from === selectedNodeId);
    if (selectedLink) {
      // 执行节点链接跳转的操作，比如更新组件的路由或打开新的窗口。
      // 以下只是一个示例
      this.$router.push(selectedLink.to);
    }
  }
}

4. References to external web pages
In a certain node of the mind map, you can add a reference to an external web page. We can use the data attribute of the jsmind node to store links to external web pages.

data() {
  return {
    mindData: {
      // ...
      data: [
        {
          id: "node1",
          isroot: true, // 根节点
          topic: "思维导图",
          data: {
            url: "https://example.com" // 外部网页链接
          }
        },
        // ...
      ]
    }
  }
},

Then, after the initialization function of jsmind, listen to the click event of the node through the api function add_event provided by jsmind. When the node is clicked, the callback function will be triggered, in which the external web page link can be obtained and corresponding operations performed.

created() {
  // ...
  this.mind.add_event(this.handleNodeClick);
},
methods: {
  handleNodeClick(event) {
    const selectedNodeId = event.target.getAttribute("nodeid");
    const selectedNode = this.mind.get_node(selectedNodeId);
    const nodeData = selectedNode.data;
    if (nodeData && nodeData.url) {
      // 打开外部网页链接
      window.open(nodeData.url);
    }
  }
}

Summary:
This article introduces how to use Vue and jsmind to implement mind map node links and external web page references. By listening to the click events of nodes, you can jump between nodes and refer to external web page links. Hope this article is helpful to you.

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