常见的几种表单验证方法

 * @param {string} str
 * @returns {Boolean}
 * 密码必须包含大小写字母、数字和特殊字符且不少于8位
 */ 
 export function validPassword(str) {
  const reg = /^(?![A-z0-9]+$)(?=.[^%&',;=?$\x22])(?=.*[a-z])(?=.*[A-Z])(?=.*[0-9]).{8,20}$/
  return reg.test(str)
}

/**
 * @param {string} email
 * @returns {Boolean}
 * 邮箱
 */
export function validEmail(email) {
  const reg = /^(([^<>()\[\]\\.,;:\s@"]+(\.[^<>()\[\]\\.,;:\s@"]+)*)|(".+"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/
  return reg.test(email)
}

/**
 * @param {string} url
 * @returns {Boolean}
 * URL地址
 */
export function validURL(url) {
  const reg = /^(https?|ftp):\/\/([a-zA-Z0-9.-]+(:[a-zA-Z0-9.&%$-]+)*@)*((25[0-5]|2[0-4][0-9]|1[0-9]{2}|[1-9][0-9]?)(\.(25[0-5]|2[0-4][0-9]|1[0-9]{2}|[1-9]?[0-9])){3}|([a-zA-Z0-9-]+\.)*[a-zA-Z0-9-]+\.(com|edu|gov|int|mil|net|org|biz|arpa|info|name|pro|aero|coop|museum|[a-zA-Z]{2}))(:[0-9]+)*(\/($|[a-zA-Z0-9.,?'\\+&%$#=~_-]+))*$/
  return reg.test(url)
}

/**
 * @param {string} phone
 * @returns {Boolean}
 * 手机号
 */
export function validPhone(phone) {
  const reg = /^[1][3,4,5,6,7,8,9][0-9]{9}$/
  return reg.test(phone)
}
// 身份证号码
const idCardValidity = (rule, code, callback) => {
      var city = {
        11: "北京",
        12: "天津",
        13: "河北",
        14: "山西",
        15: "内蒙古",
        21: "辽宁",
        22: "吉林",
        23: "黑龙江 ",
        31: "上海",
        32: "江苏",
        33: "浙江",
        34: "安徽",
        35: "福建",
        36: "江西",
        37: "山东",
        41: "河南",
        42: "湖北 ",
        43: "湖南",
        44: "广东",
        45: "广西",
        46: "海南",
        50: "重庆",
        51: "四川",
        52: "贵州",
        53: "云南",
        54: "西藏 ",
        61: "陕西",
        62: "甘肃",
        63: "青海",
        64: "宁夏",
        65: "新疆",
        71: "台湾",
        81: "香港",
        82: "澳门",
        91: "国外 ",
      };
      var tip = "";
      var pass = true;
      if (
        !code ||
        !/^\d{6}(18|19|20)?\d{2}(0[1-9]|1[012])(0[1-9]|[12]\d|3[01])\d{3}(\d|X)$/i.test(
          code
        )
      ) {
        tip = "身份证号格式错误";
        pass = false;
      } else if (!city[code.substr(0, 2)]) {
        // tip = "地址编码错误"
        tip = "身份证输入错误";
        pass = false;
      } else {
        // 18位身份证需要验证最后一位校验位
        if (code.length === 18) {
          code = code.split("");
          // ∑(ai×Wi)(mod 11)
          // 加权因子
          var factor = [7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2];
          // 校验位
          var parity = [1, 0, "X", 9, 8, 7, 6, 5, 4, 3, 2];
          var sum = 0;
          var ai = 0;
          var wi = 0;
          for (var i = 0; i < 17; i++) {
            ai = code[i];
            wi = factor[i];
            sum += ai * wi;
          }
          var last = parity[sum % 11];
          if (parity[sum % 11] != code[17]) {
            // tip = "校验位错误"
            tip = "身份证输入错误";
            pass = false;
          }
        }
      }
      if (!pass) {
        callback(new Error(tip));
      } else {
        callback();
      }
    };