vue数据转树状图最终进阶（三级柱状图）

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// 深拷贝
function deepClone(data) {
  let dataType = getDataType(data);
  let container;
  if (dataType === 'Object') {
    container = {};
  }
  if (dataType === 'Array') {
    container = [];
  }
  for (const key in data) {
    let type = getDataType(data[key]);
    if (key === 'Array' || type === 'Object') {
      container[key] = deepClone(data[key]);
    } else {
      container[key] = data[key];
    }
  }
  return container;
}
// 判断数据类型
function getDataType(data) {
  return Object.prototype.toString.call(data).slice(8, -1);
}

function generateRandomString(length) {
  let result = '';
  const characters = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';
  const charactersLength = characters.length;
  for (let i = 0; i < length; i++) {
    const randomIndex = Math.floor(Math.random() * charactersLength);
    result += characters.charAt(randomIndex);
  }
  return result;
}

function addCourseId(data){
  const courseMap = {}; // 创建一个映射对象，将 courseName 映射到唯一的 courseId

// 遍历 data 数组
  for (const item of data) {
    const courseName = item.courseName;
    // 如果 courseName 不在映射中，则为其分配一个新的 courseId（字符串形式）
    if (!courseMap[courseName]) {
      courseMap[courseName] = generateRandomString(30);
    }
    // 将映射中的 courseId 赋值给对象的 courseId 属性
    item.courseId = courseMap[courseName];
  }
  return data
}

function addProCourseScoreType(data){
  // 添加courseId
  data = addCourseId(data);
  // 添加一级父节点(project)
  var afterDeptList = []; // 找项目名
  var afterTeaData = []; // 将父节点添加进去
  for (let item of data) {
    if (!afterDeptList.includes(item.planId)) { // 如果这个项目id没有出现过，就把项目id第一个放进去
      afterDeptList.push(item.planId);
      let project = item.project + '(' + item.trainId + ')';
      // 添加一个该项目第一次出现的父节点
      afterTeaData.push({ uuid: item.planId, pid: '0', project: project, trainId: item.trainId, isParent: '1' });
      item.pid = item.planId;
    } else {
      item.pid = item.planId; //父节点出现了，给子节点添加一个索引
    }
  }
  data = [...afterTeaData, ...data];
  // 添加二级父节点(teacher)
  let result2 = [],
      courseList = [];
  for (let item of data) {
    if (item.pid != '0') { // 如果pid不是0 那么说明有父节点
      let courseId = item.courseId;
      let planId = item.planId;
      let pid = planId + courseId; // 项目名+teacher名
      if (courseList.includes(pid)) { // 发现这个项目了
        item.pid = pid;
        item.project = item.courseName;
        result2.push(item);
      } else {
        courseList.push(pid);
        result2.push({ uuid: pid, pid: item.planId, project: item.courseName, isParent: '1' });
        //构造日期下的第一个节点
        let temp = deepClone(item);
        temp.pid = pid;
        temp.project = temp.courseName;
        result2.push(temp);
      }
    } else {
      result2.push(item);
    }
  }
  // 添加三级父节点
  let result3 = [],
      scoreTypeList = [];
  for(let item of result2){
    if (item.isParent != '1') {
      let ScoreTypeId = item.scoreType;
      let planId = item.planId;
      let courseId = item.courseId;
      let pid = planId + courseId + ScoreTypeId;
      let pid2 =  planId + courseId;
      if (scoreTypeList.includes(pid)) {
        item.pid = pid;
        item.project = item.studentName;
        result3.push(item);
      } else {
        scoreTypeList.push(pid);
        result3.push({ uuid: pid, pid: pid2, project: item.scoreType, isParent: '1' });
        //构造日期下的第一个节点
        let temp = deepClone(item);
        temp.pid = pid;
        temp.project = temp.studentName;
        result3.push(temp);
      }
    } else {
      result3.push(item);
    }
  }
  return result3
}


function getDeptTreeCustom(data, pid, idField, pidField) {
  if (typeof idField == 'undefined') {
    idField = 'id';
  }
  if (typeof pidField == 'undefined') {
    pidField == 'pid';
  }
  const result = [];
  let temp;
  for (let i = 0; i < data.length; i++) {
    if (data[i][pidField] === pid) { // 如果元素的pid==0
      temp = getDeptTreeCustom(data, data[i][idField], idField, pidField);
      if (temp.length > 0) {
        data[i].children = temp;
      }
      result.push(data[i]);
    }
  }
  return result;
}

let y = addProCourseScoreType(data)
let all = getDeptTreeCustom(y,'0', 'uuid', 'pid')
console.log(all)