王新阳

function idCardValid(idcard) {
var card=idcard;
//是否为空
if(card === '') {
return false;
}
//校验长度，类型
if(/(^\d{15}$)|(^\d{17}(\d|X)$)/i.test(card) === false) {
return false;
}
var arrInt = [7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2], arrCh = ['1', '0', 'X', '9', '8', '7', '6', '5', '4', '3', '2'], cardTemp=0, i=0; 
//15位升18位
if(card.length==15){
card = card.substr(0, 6) + '19' + card.substr(6);
for(i = 0; i < 17; i ++) { 
cardTemp += card.substr(i, 1) * arrInt[i]; 
} 
card += arrCh[cardTemp % 11]; 
}


//省份验证
var vcity = {
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"
};
if(vcity[card.substr(0,2)] == undefined) {
return false;
}
//校验生日
var arr=[card.substr(6,4), card.substr(10,2), card.substr(12,2)];
arr.push(new Date(arr.join('-')));
arr.push(new Date().getFullYear());
if(arr[3].getFullYear()==arr[0] && (arr[3].getMonth()+1)==arr[1] && arr[3].getDate()==arr[2]){
//年龄0-120岁
if(arr[4]-arr[0]<0 || arr[4]-arr[0]>120){
return false;
}
}else{
return false;
}
if(idcard.length==15)return true;
for(i = 0; i < 17; i ++) { 
cardTemp += card.substr(i, 1) * arrInt[i]; 
} 
return arrCh[cardTemp % 11]  == card.substr(17, 1)
};