How to implement the thumbnail and navigation functions of mind map nodes using Vue and jsmind?

Use Vue and jsmind to implement thumbnails and navigation functions of mind map nodes

Mind map is a commonly used knowledge organization and thinking tool that can help us Clearly demonstrate thinking structures and help us better understand and remember knowledge. In practical applications, we often need to display large mind maps, and navigating in large mind maps can become very difficult. In order to solve this problem, we can use the Vue framework and jsmind plug-in to implement the thumbnail and navigation functions of mind map nodes.

First of all, we need to prepare the environment for Vue and jsmind. You can use CDN to introduce the library files of Vue and jsmind, or you can use npm to install and introduce them. Next, we can start writing Vue components to implement the thumbnail and navigation functions of the mind map.

First, let's create a Vue component named "MindMap". In the component, we need to introduce the jsmind plug-in first:

<script src="https://unpkg.com/jsmind/dist/jsmind.min.js"></script>

Then, we can add a div container for displaying the mind map in the template of the Vue component:

<template>
  <div id="mindmap-container"></div>
</template>

In the Vue component's template script, we can use Vue's hook function to initialize the jsmind plug-in and create a mind map:

<script>
export default {
  mounted() {
    // 初始化jsmind插件
    var mind = {
      "meta": {
        "name": "思维导图"
      },
      "format": "node_array",
      "data": [
        {"id":"1", "isroot": true, "topic": "根节点"},
        {"id":"2", "parentid":"1", "topic": "节点1"},
        {"id":"3", "parentid":"1", "topic": "节点2"},
        {"id":"4", "parentid":"2", "topic": "节点1.1"},
        {"id":"5", "parentid":"2", "topic": "节点1.2"},
        // 更多节点...
      ]
    };
    var options = {};
    var jm = jsMind.show('mindmap-container', mind, options);
  }
}
</script>

In the above code, we can see that a set of nodes are defined in the mind object, and each node has The unique id, the parentid of the parent node, and the topic of the node. We can extend and modify the properties of nodes according to specific needs. We also need to define an options object to configure some parameters of jsmind. Finally, by calling the "jsMind.show" function and specifying the mind map's container id, mind object, and options object, the mind map can be displayed on the page.

Next, we can add thumbnails and navigation functions to the mind map. In the mounted function of the Vue component, we can continue to add the following code:

mounted() {
  // 初始化jsmind插件
  var mind = {
    //...
  };
  var options = {};
  var jm = jsMind.show('mindmap-container', mind, options);

  // 创建缩略图
  var thumbnail = jm.get_view();
  var thumbnailContainer = document.getElementById('thumbnail-container');
  thumbnailContainer.appendChild(thumbnail);

  // 创建导航栏
  var navigator = jm.get_selective_menu();
  var navigatorContainer = document.getElementById('navigator-container');
  navigatorContainer.appendChild(navigator);
}

In the above code, we first create a thumbnail of the mind map by calling the "jm.get_view" function and add it into a div container named "thumbnail-container". Next, we create the navigation bar of the mind map by calling the "jm.get_selective_menu" function and add it to the div container named "navigator-container".

Finally, we need to add the corresponding div container in the template of the Vue component:

<template>
  <div>
    <div id="mindmap-container"></div>
    <div id="thumbnail-container"></div>
    <div id="navigator-container"></div>
  </div>
</template>

At this point, we have completed the thumbnail and navigation functions of mind map nodes using Vue and jsmind code writing. Through the above code example, we can display the mind map in the Vue component and create the corresponding thumbnail and navigation bar on the page. This way we can more easily navigate and view large mind maps.

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