element 常用表单校验规则

    /**
     * 表单校验的rules
     */

    // 1. 必填校验
    export const required = {
      required: true,
      message: '请填写此项内容',
      trigger: 'blur'
    }

    // 手机号
    export const phone = {
      pattern: /^(13[0-9]|14[01456879]|15[0-3,5-9]|16[2567]|17[0-8]|18[0-9]|19[0-3,5-9])\d{8}$/,
      message: '请输入正确的手机号',
      trigger: 'blur'
    }

    // 纯整数
    export const integer = {
      pattern: /^(\-|\+)?\d+?$/,
      message: '请输入正确的数字',
      trigger: 'blur'
    }

    // 纯整数或小数
    export const float = {
      pattern: /^(\-|\+)?\d+(\.\d+)?$/,
      message: '请输入正确的数字（整数或小数）',
      trigger: 'blur'
    }

    // 日期
    export const date = {
      type: 'date',
      message: '请选择日期',
      trigger: 'blur'
    }

    // 邮箱
    export const email = {
      type: 'email',
      message: '请输入正确的邮箱地址',
      trigger: 'blur'
    }

    // url
    export const url = {
      type: 'url',
      message: '请输入正确的链接',
      trigger: 'blur'
    }

    //  微信号
    export const wecheat = {
      pattern: /^[a-zA-Z][a-zA-Z0-9_-]{5,19}$/,
      message: '请输入正确的微信号',
      trigger: 'blur'
    }
    // 营业执照
    export const businessLicense = {
      pattern: /(^(?:(?![IOZSV])[\dA-Z]){2}\d{6}(?:(?![IOZSV])[\dA-Z]){10}$)|(^\d{15}$)/,
      message: '请输入正确的营业执照',
      trigger: 'blur'
    }
    // 字符长度
    export function len(max = 255, min = 0) {
      return {
        min,
        max,
        message: `长度在 ${min} 到 ${max} 个字符`,
        trigger: 'blur'
      }
    }

    // 数字范围
    export function range(max = 99999999.99, min = 0) {
      const validator = (rule, val, cb) => {
        val = +val
        if (!(val >= min && val <= max)) {
          cb(new Error(rule.message))
        }
        cb()
      }
      return {
        validator,
        message: `数字范围在 ${min} 到 ${max}`,
        trigger: 'blur'
      }
    }

    // 银行卡号
    export function bankAccount() {
      const validator = (rule, value, cb) => {
        const strBin = '10,18,30,35,37,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,58,60,62,65,68,69,84,87,88,94,95,98,99'
        if (!value) {
          cb(new Error('收款账户不能为空'))
        } else if (!Number.isInteger(+value)) {
          cb(new Error('银行卡号必须全为数字'))
        } else if (value.trim().length < 12 || value.trim().length > 19) {
          cb(new Error('银行卡号长度必须在12到19之间'))
        } else if (strBin.indexOf(value.substring(0, 2)) === -1) {
          cb(new Error('银行卡号开头6位不符合规范'))
        } else {
          cb();
        }
      };
     
      return {
        validator,
        trigger: 'blur'
     
      }
    }