Process visualization javascript

Process visualization JavaScript: display complex processes in the form of thumbnails

With the rapid development of Web technology, more and more companies and organizations are digitizing business processes. This can not only improve work efficiency, but also promote process standardization and standardized management. Among the many process management tools, a process visualization solution implemented through JavaScript is becoming more and more popular. This article will introduce how to implement this solution and its advantages.

1. The need for process visualization

In enterprises and organizations, the need for process visualization is mainly reflected in the following aspects:

1. Internal standardized process management. For various processes, especially those that need to comply with relevant laws, regulations or internal regulations, companies and organizations need to design timely and accurate flow charts and standardize the execution process.
2. Process review and quick response. For relatively independent processes such as approval and reimbursement, companies and organizations need to achieve rapid review and timely response.
3. Process data statistics and analysis. Enterprises and organizations need to collect, integrate and analyze process data from various departments to optimize processes and improve work efficiency.
4. Information sharing and exchange. Enterprises and organizations need to use process management tools to promote information sharing, communication and collaboration, improve work efficiency and reduce misunderstandings and communication barriers.

The above requirements require a process management solution that is convenient, practical, easy to implement and highly visual.

2. JavaScript to realize process visualization

In the process visualization solution, JavaScript can help us achieve the following functions:

1. Interactivity. JavaScript can implement interactive operations such as zooming, dragging, highlighting, and click response of flowcharts.
2. Visibility. Custom styles and styles of flowcharts can be realized through JavaScript, making flowcharts more intuitive and easy to understand.
3. Multi-platform compatibility. JavaScript has good compatibility on different platforms and devices and can achieve cross-platform management.
4. Separation of front and back ends. JavaScript can realize the separation of front-end and back-end, and realize the interaction of process data by asynchronously requesting back-end services.

Based on the above advantages, the process visualization solution implemented by JavaScript has been widely used in the workflow of enterprises and organizations.

3. Process visualization implementation method

1. Use a third-party open source chart library. For example, ECharts, D3.js, Highcharts, etc., these chart libraries provide the functions of drawing, interacting and customizing flowcharts. Among them, ECharts is one of the most popular chart libraries in China. It has the advantages of simplicity and ease of use, rich chart types, and excellent compatibility.
2. Write JavaScript code by yourself. Write JavaScript code on Canvas or SVG to implement the flowchart, as well as the style and interactive functions of the flowchart. This method requires writing complex code and requires good JavaScript programming skills.
3. Use excellent visualization libraries. For example, AntV, G2, G6, etc., in the visualization library, users do not need to consider the underlying implementation of the flow chart, and only need to call the relevant API to realize the drawing, interaction and custom styles of the flow chart. AntV is an excellent foreign visualization library that supports multiple chart types such as flow charts, horizontal tree diagrams, and vertical tree diagrams. G2 and G6 are visualization libraries produced by Alibaba, both of which have powerful visualization functions and good performance.

4. Process Visualization Implementation Case

Taking the AntV flow chart as an example, a simple case for implementing a process visualization solution is given below.

import G6 from '@antv/g6';

// 创建一个场景实例
const graph = new G6.Graph({
  container: 'container',
  width: 800,
  height: 500,
  modes: {
    default: [
      'drag-node',
      'click-select',
      'tooltip'
    ]
  },
  defaultEdge: {
    type: 'line'
  },
  defaultNode: {
    type: 'rect'
  },
  layout: {
    type: 'dagre',
    rankdir: 'TB',
    nodesep: 20,
    ranksep: 50
  }
});

// 描述模板节点
const tmplNode = {
  id: 'node1',
  label: '模板',
  x: 100,
  y: 100
};

// 描述开始节点
const startNode = {
  id: 'node2',
  label: '开始',
  x: 200,
  y: 200
};

// 描述结束节点
const endNode = {
  id: 'node3',
  label: '结束',
  x: 400,
  y: 300
};

// 创建节点模板和开始、结束节点
graph.addItem('node', tmplNode);
graph.addItem('node', startNode);
graph.addItem('node', endNode);

// 创建起始节点和结束节点之间的边
graph.addItem('edge', {
  id: 'edge1',
  source: 'node2',
  target: 'node3',
  label: '申请'
});

// 创建模板节点和开始节点之间的边
graph.addItem('edge', {
  id: 'edge2',
  source: 'node1',
  target: 'node2',
  label: '新建'
});

// 根据节点ID获取节点和相关连线信息
const item = graph.findById('node2');
console.log(item.getModel());
console.log(item.getEdges().map((edge) => {
  return edge.getModel();
}));

// 绑定页面元素，显示流程图
graph.render();

The above code implements a simple flow chart, which includes template nodes, start nodes, end nodes and related connections. Users can view details and related information in the flow chart through operations such as panning, zooming, dragging, and clicking.

5. Summary

The process visualization solution implemented by JavaScript not only has good visibility and interactivity, but its code writing is relatively simple and easy to understand, and can quickly realize process management needs. Whether it is for internal standardization processes, process audits and rapid responses, process data statistics and analysis, information sharing and communication, etc., JavaScript process visualization solutions have been widely used. The birth of excellent visualization libraries such as AntV, G2, and G6 has promoted the widespread application of process visualization solutions.

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