rules使用正则表达式进行校验手机号

rules: {
        phoneNumber: [
          { required: true, message: '请输入手机号码', trigger: 'blur' },
          {
            required: true,
            pattern: /^[1][3,4,5,7,8,9][0-9]{9}$/,
            message: '请输入正确的手机号码',
            trigger: 'blur',
          },
        ],
      },

    validatePhone(value) {
      const reg = /^[1][3,4,5,7,8,9][0-9]{9}$/;
      if (value == '' || value == undefined || value == null) {
        return '';
      } else {
        if (!reg.test(value) && value != '') {
          return '请输入正确的手机号码';
        } else {
          return '';
        }
      }
    },