我的工具函数（持续更新）

/**
 * @description 搜索树结构数据
 * @param {*} tree 树结构数组
 * @param {*} func 毁掉函数
 * @returns 搜索结果
 */

function treeFilter(tree, func) {
  // 使用map复制一下节点，避免修改到原树
  return tree
    .map((node) => ({ ...node }))
    .filter((node) => {
      node.children = node.children && treeFilter(node.children, func);
      return func(node) || (node.children && node.children.length);
    });
}

/**
 * @description 多维数组扁平化成为一维数组
 * @param {*} data 多维数组
 * @returns 一维数组
 */
function flatten(data) {
  if (Array.isArray(data)) {
    return data.reduce((prev, curr) => {
      return prev.concat(Array.isArray(curr) ? flatten(curr) : curr);
    }, []);
  }
  return [];
}

/**
 * 范围内随机数
 * @param {*} n 起始
 * @param {*} m 结束
 * @param {boolean} [isFloat=false] 是否需要返回浮点数
 * @returns n-m内的随机整数
 */
export function fullOpen(n = 100, m = 300, isFloat = false) {
  let result = Math.random() * (m + 1 - n) + n;
  while (result > m) {
    result = Math.random() * (m + 1 - n) + n;
  }
  return isFloat ? result : parseInt(result);
}

/**
 * 存储单位换算
 * @param {*} bytes 字节数
 * @returns 换算好的数据
 */
export function byteTransform(bytes) {
  if (bytes === 0) return "0 B";
  const k = 1000, // or 1024
    sizes = ["B", "KB", "MB", "GB", "TB", "PB", "EB", "ZB", "YB"],
    i = Math.floor(Math.log(bytes) / Math.log(k));

  return (bytes / Math.pow(k, i)).toPrecision(3) + " " + sizes[i];
}


/**
 * 下划线转驼峰
 * @param string
 * @returns {*}
 */
export function underLine2CamelCase(string){
  return string.replace( /_([a-z])/g, function( all, letter ) {
    return letter.toUpperCase();
  });
}

/**
*身份证号校验
*@param string身份证号码
*@returns boolean 正确或者错误
**/
export class IDCardValidator {
  validateIdCard(idCard) {
    var vcity = {
      11: "北京", 12: "天津", 13: "河北", 14: "山西", 15: "内蒙古",
      21: "辽宁", 22: "吉林", 23: "黑龙江", 31: "上海", 32: "江苏",
      33: "浙江", 34: "安徽", 35: "福建", 36: "江西", 37: "山东", 41: "河南",
      42: "湖北", 43: "湖南", 44: "广东", 45: "广西", 46: "海南", 50: "重庆",
      51: "四川", 52: "贵州", 53: "云南", 54: "西藏", 61: "陕西", 62: "甘肃",
      63: "青海", 64: "宁夏", 65: "新疆", 71: "台湾", 81: "香港", 82: "澳门", 91: "国外"
    };
    //是否为空
    if (idCard === '') {
      return false;
    }
    //校验长度，类型
    if (this.isCardNo(idCard) === false) {
      return false;
    }
    //检查省份
    if (this.checkProvince(idCard, vcity) === false) {
      return false;
    }
    //校验生日
    if (this.checkBirthday(idCard) === false) {
      return false;
    }
    //检验位的检测
    if (this.checkParity(idCard) === false) {
      return false;
    }
    return true;
  },
  isCardNo(card) {
    //身份证号码为15位或者18位，15位时全为数字，18位前17位为数字，最后一位是校验位，可能为数字或字符X
    var reg = /(^\d{15}$)|(^\d{17}(\d|X|x)$)/;
    if (reg.test(card) === false) {
      return false;
    }
    return true;
  },
  checkProvince(card, vcity) {
    var province = card.substr(0, 2);
    if (vcity[province] == undefined) {
      return false;
    }
    return true;
  },
  checkBirthday(card) {
    var len = card.length;
    //身份证15位时，次序为省（3位）市（3位）年（2位）月（2位）日（2位）校验位（3位），皆为数字
    if (len == '15') {
      var re_fifteen = /^(\d{6})(\d{2})(\d{2})(\d{2})(\d{3})$/;
      var arr_data = card.match(re_fifteen);
      var year = arr_data[2];
      var month = arr_data[3];
      var day = arr_data[4];
      var birthday = new Date('19' + year + '/' + month + '/' + day);
      return this.verifyBirthday('19' + year, month, day, birthday);
    }
    //身份证18位时，次序为省（3位）市（3位）年（4位）月（2位）日（2位）校验位（4位），校验位末尾可能为X
    if (len == '18') {
      var re_eighteen = /^(\d{6})(\d{4})(\d{2})(\d{2})(\d{3})([0-9]|X|x)$/;
      var arr_data = card.match(re_eighteen);
      var year = arr_data[2];
      var month = arr_data[3];
      var day = arr_data[4];
      var birthday = new Date(year + '/' + month + '/' + day);
      return this.verifyBirthday(year, month, day, birthday);
    }
    return false;
  },
  verifyBirthday(year, month, day, birthday) {
    var now = new Date();
    var now_year = now.getFullYear();
    //年月日是否合理
    if (birthday.getFullYear() == year && (birthday.getMonth() + 1) == month && birthday.getDate() == day) {
      //判断年份的范围（0岁到100岁之间)
      var time = now_year - year;
      if (time >= 0 && time <= 100) {
        return true;
      }
      return false;
    }
    return false;
  },
  checkParity(card) {
    //15位转18位
    card = this.changeFivteenToEighteen(card);
    var len = card.length;
    if (len == '18') {
      var arrInt = new Array(7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2);
      var arrCh = new Array('1', '0', 'X', '9', '8', '7', '6', '5', '4', '3', '2');
      var cardTemp = 0, i, valnum;
      for (i = 0; i < 17; i++) {
        cardTemp += card.substr(i, 1) * arrInt[i];
      }
      valnum = arrCh[cardTemp % 11];
      if (valnum == card.substr(17, 1).toLocaleUpperCase()) {
        return true;
      }
      return false;
    }
    return false;
  },
  changeFivteenToEighteen(card) {
    if (card.length == '15') {
      var arrInt = new Array(7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2);
      var arrCh = new Array('1', '0', 'X', '9', '8', '7', '6', '5', '4', '3', '2');
      var cardTemp = 0, i;
      card = card.substr(0, 6) + '19' + card.substr(6, card.length - 6);
      for (i = 0; i < 17; i++) {
        cardTemp += card.substr(i, 1) * arrInt[i];
      }
      card += arrCh[cardTemp % 11];
      return card;
    }
    return card;
  }
}
//链接🔗是：https://juejin.cn/post/6860296903175700488?searchId=2023091609450089B2E42B1826E65267EC