js combined with regular expressions to implement domestic mobile phone number segment verification_javascript skills

var isChinaMobile = /^134[0-8]\d{7}$|^(?:13[5-9]|147|15[0-27-9]|178|18[2-478])\d{8}$/; //移动方面最新答复
var isChinaUnion = /^(?:13[0-2]|145|15[56]|176|18[56])\d{8}$/; //向联通微博确认并未回复
var isChinaTelcom = /^(?:133|153|177|18[019])\d{8}$/; //1349号段 电信方面没给出答复，视作不存在
var isOtherTelphone  = /^170([059])\d{7}$/;//其他运营商
 
var utils = {
  checkMobile: function(telphone){
    telphone = this.trim(telphone);
    if(telphone.length !== 11){
      return this.setReturnJson(false, '未检测到正确的手机号码');
    }
    else{
      if(isChinaMobile.test(telphone)){
        return this.setReturnJson(true, '移动', {name: 'ChinaMobile'});
      }
      else if(isChinaUnion.test(telphone)){
        return this.setReturnJson(true, '联通', {name: 'ChinaUnion'});
      }
      else if(isChinaTelcom.test(telphone)){
        return this.setReturnJson(true, '电信', {name: 'ChinaTelcom'});
      }
      else if(isOtherTelphone.test(telphone)){
        var num = isOtherTelphone.exec(telphone);
        return this.setReturnJson(true, '', {name: ''});
      }
      else{
        return this.setReturnJson(false, '未检测到正确的手机号码');
      }
    }
  },
  setReturnJson: function(status, msg, data){
    if(typeof status !== 'boolean' && typeof status !== 'number'){
      status = false;
    }
    if(typeof msg !== 'string'){
      msg = '';
    }
    return {
      'status': status,
      'msg': msg,
      'data': data
    };
  }
}

<script type="text/javascript">
var myreg = /^(((13[0-9]{1})|(15[0-9]{1})|(18[0-9]{1}))+\d{8})$/; 
if(!myreg.test($("#phone").val())) 
{ 
  alert('请输入有效的手机号码！'); 
  return false; 
} 
</script>

function validatemobile(mobile) 
  { 
    if(mobile.length==0) 
    { 
     alert('请输入手机号码！'); 
     document.form1.mobile.focus(); 
     return false; 
    }   
    if(mobile.length!=11) 
    { 
      alert('请输入有效的手机号码！'); 
      document.form1.mobile.focus(); 
      return false; 
    } 
    
    var myreg = /^(((13[0-9]{1})|(15[0-9]{1})|(18[0-9]{1}))+\d{8})$/; 
    if(!myreg.test(mobile)) 
    { 
      alert('请输入有效的手机号码！'); 
      document.form1.mobile.focus(); 
      return false; 
    } 
  }