js真实身份证号码验证

function isIdCard(obj) {
	var Errors=new Array(
    "身份证号码位数不对!",
    "身份证号码出生日期超出范围或含有非法字符!",
    "身份证号码校验错误!",
    "身份证地区非法!"
);
var area={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 Y,JYM;
var S,M;
	  var idcard = obj.value.toUpperCase();
	  if(idcard!=obj.value){
	  	obj.value = idcard;	
	  }
	//位数检测
	if(idcard == null || idcard == "" || (idcard.length != 15 && idcard.length != 18)) {
		alert(Errors[0]);
		return false;
	}

var idcard_array = new Array();
idcard_array = idcard.split("");

//地区检验
if(area[parseInt(idcard.substr(0,2))] == null) {
		alert(Errors[3]);
		return false;
	}

//身份号码位数及格式检验
if(idcard.length == 15) {
		if ( (parseInt(idcard.substr(6,2))+1900) % 4 == 0 || ((parseInt(idcard.substr(6,2))+1900) % 100 == 0 && (parseInt(idcard.substr(6,2))+1900) % 4 == 0 )){
			ereg=/^[1-9][0-9]{5}[0-9]{2}((01|03|05|07|08|10|12)(0[1-9]|[1-2][0-9]|3[0-1])|(04|06|09|11)(0[1-9]|[1-2][0-9]|30)|02(0[1-9]|[1-2][0-9]))[0-9]{3}$/;//测试出生日期的合法性
		} else {
			ereg=/^[1-9][0-9]{5}[0-9]{2}((01|03|05|07|08|10|12)(0[1-9]|[1-2][0-9]|3[0-1])|(04|06|09|11)(0[1-9]|[1-2][0-9]|30)|02(0[1-9]|1[0-9]|2[0-8]))[0-9]{3}$/;//测试出生日期的合法性
		}
		if(ereg.test(idcard)){
			return true;
		}else{
			alert("1"+Errors[1]);
			return false;
		}
		return true;
	} else if(idcard.length == 18) {
		//18位身份号码检测
		//出生日期的合法性检查
		//闰年月日:((01|03|05|07|08|10|12)(0[1-9]|[1-2][0-9]|3[0-1])|(04|06|09|11)(0[1-9]|[1-2][0-9]|30)|02(0[1-9]|[1-2][0-9]))
		//平年月日:((01|03|05|07|08|10|12)(0[1-9]|[1-2][0-9]|3[0-1])|(04|06|09|11)(0[1-9]|[1-2][0-9]|30)|02(0[1-9]|1[0-9]|2[0-8]))
		if ( parseInt(idcard.substr(6,4)) % 4 == 0 || (parseInt(idcard.substr(6,4)) % 100 == 0 && parseInt(idcard.substr(6,4))%4 == 0 )){
			ereg=/^[1-9][0-9]{5}[0-9]{4}((01|03|05|07|08|10|12)(0[1-9]|[1-2][0-9]|3[0-1])|(04|06|09|11)(0[1-9]|[1-2][0-9]|30)|02(0[1-9]|[1-2][0-9]))[0-9]{3}[0-9XxZz]$/;//闰年出生日期的合法性正则表达式
		} else {
			ereg=/^[1-9][0-9]{5}[0-9]{4}((01|03|05|07|08|10|12)(0[1-9]|[1-2][0-9]|3[0-1])|(04|06|09|11)(0[1-9]|[1-2][0-9]|30)|02(0[1-9]|1[0-9]|2[0-8]))[0-9]{3}[0-9XxZz]$/;//平年出生日期的合法性正则表达式
		}
		if(idcard_array[17]!='Z'&&idcard_array[17]!='z'){
			if(ereg.test(idcard)){//测试出生日期的合法性
				//计算校验位
				S = (parseInt(idcard_array[0]) + parseInt(idcard_array[10])) * 7
				+ (parseInt(idcard_array[1]) + parseInt(idcard_array[11])) * 9
				+ (parseInt(idcard_array[2]) + parseInt(idcard_array[12])) * 10
				+ (parseInt(idcard_array[3]) + parseInt(idcard_array[13])) * 5
				+ (parseInt(idcard_array[4]) + parseInt(idcard_array[14])) * 8
				+ (parseInt(idcard_array[5]) + parseInt(idcard_array[15])) * 4
				+ (parseInt(idcard_array[6]) + parseInt(idcard_array[16])) * 2
				+ parseInt(idcard_array[7]) * 1
				+ parseInt(idcard_array[8]) * 6
				+ parseInt(idcard_array[9]) * 3 ;
				Y = S % 11;
				M = "F";
				JYM = "10X98765432";
				M = JYM.substr(Y,1);//判断校验位
				if(M == idcard_array[17].toUpperCase()){
					return true; //检测ID的校验位
				}else{
					alert(Errors[2]);
					return false;
				}
			}else{
				alert(Errors[1]);
				return false;
			}
		}
		return true;
}
}

/**purpose: 获取'性别'
*obj:			''	
*@param:	stNum-> '身份证号码'
**/			
function createSex(stNum){	
var sexId = "";
		
if(stNum != null){          
var s = parseInt(stNum.substring(16,17));
if(s % 2 == 0)   
sexId = 0;   //女
else
sexId = 1;   //男        

}		      

return sexId;
}	


/**purpose: 获取'出生日期'
*obj:			''	
*@param:	stNum-> '身份证号码'
**/			
function createBirth(stNum){	
var birthStr = "";
	
if(stNum != null && Jtrim(stNum).length > 0 ){      
	    
			var birth = stNum.substring(6,14);	
			var b1 = birth.substring(0,4);
var b2 = birth.substring(4,6);
var b3 = birth.substring(6,8);

var birthStr = b1 + "-" + b2 + "-" + b3;   
}		      

return birthStr;
}	

/**purpose: 获取'年龄'
*obj:			''	
*@param:	stNum-> '身份证号码'
**/			
function createAgeNew(stNum){	
var age = "";
	
if(stNum != null && Jtrim(stNum).length > 0 ){      
    if(Jtrim(stNum).length == 18){
		    
	  var birth = stNum.substring(6,14);					
var ctDate = getCurrentDate();

age = parseInt(ctDate.substring(0,4)) - parseInt(birth.substring(0,4));

var b1 = birth.substring(4,6);
var b2 = birth.substring(6,8);            
var b = b1 + "-" + b2;
        
var i = ctDate.indexOf("-");
var c = ctDate.substring(5,ctDate.length);
	
if(b > c )
  age = age -1 ;   
} 
if(Jtrim(stNum).length == 15){
		    
	  var birth = stNum.substring(6,12);					
var ctDate = getCurrentDate();

age = parseInt(ctDate.substring(0,4)) - 1900 - parseInt(birth.substring(0,2));

var b1 = birth.substring(2,4);
var b2 = birth.substring(4,6);            
var b = b1 + "-" + b2;
        
var i = ctDate.indexOf("-");
var c = ctDate.substring(5,ctDate.length);
	
if(b > c )
  age = age -1 ;   
}  
if(Jtrim(stNum).length == 8){
		    
	  var birth = stNum.substring(0,8);					
var ctDate = getCurrentDate();

age = parseInt(ctDate.substring(0,4)) - parseInt(birth.substring(0,4));

var b1 = birth.substring(4,6);
var b2 = birth.substring(6,8);            
var b = b1 + "-" + b2;
        
var i = ctDate.indexOf("-");
var c = ctDate.substring(5,ctDate.length);
	
if(b > c )
  age = age -1 ;   
}         
}		      

return age;
}