Detailed explanation of javaScript mobile phone number verification tool class PhoneUtils

//PhoneUtils命名空间 
PhoneUtils = { 
 phoneRegexs: { 
  //中国电信号码段    
  CHINA_TELECOM_PATTERN: /^(?:\+86)?1(?:33|53|7[37]|8[019])\d{8}$|^(?:\+86)?1700\d{7}$/, 
  //中国联通号码段 
  CHINA_UNICOM_PATTERN: /^(?:\+86)?1(?:3[0-2]|4[5]|5[56]|7[56]|8[56])\d{8}$|^(?:\+86)?170[7-9]\d{7}$/, 
  //中国移动号码段 
  CHINA_MOBILE_PATTERN: /^(?:\+86)?1(?:3[4-9]|4[7]|5[0-27-9]|7[8]|8[2-478])\d{8}$|^(?:\+86)?1705\d{7}$/, 
  //电话座机号码段 
  PHONE_CALL_PATTERN: /^(?:\d3,4|\d{3,4}-)?\d{7,8}(?:-\d{1,4})?$/, 
  //手机号码 
  PHONE_PATTERN: /^(?:\+86)?(?:13\d|14[57]|15[0-35-9]|17[35-8]|18\d)\d{8}$|^(?:\+86)?170[057-9]\d{7}$/, 
  //手机号简单校验，不根据运营商分类 
  PHONE_SIMPLE_PATTERN: /^(?:\+86)?1\d{10}$/ 
 }, 
 //电话号码 
 isPhoneCallNum: function(input) { 
  return this.phoneRegexs.PHONE_CALL_PATTERN.test(input); 
 }, 
 //电信手机号码 
 isChinaTelecomPhoneNum: function(input) { 
  return this.phoneRegexs.CHINA_TELECOM_PATTERN.test(input); 
 }, 
 //中国联通 
 isChinaUnicomPhoneNum: function(input) { 
  return this.phoneRegexs.CHINA_UNICOM_PATTERN.test(input); 
 }, 
 //中国移动 
 isChinaMobilePhoneNum: function(input) { 
  return this.phoneRegexs.CHINA_MOBILE_PATTERN.test(input); 
 }, 
 //手机号码 
 isPhoneNum: function(input) { 
  return this.phoneRegexs.PHONE_PATTERN.test(input); 
 }, 
 //手机号码简单校验，只校验长度 
 isPhoneNumBySize: function(input) { 
  return this.phoneRegexs.PHONE_SIMPLE_PATTERN.test(input); 
 } 
};