js验证身份证号码
1 function IdentityCodeValid(code) { 2 var city={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 "}; 3 var tip = ""; 4 var pass= true; 5 6 if(!code || !/^\d{6}(18|19|20)?\d{2}(0[1-9]|1[12])(0[1-9]|[12]\d|3[01])\d{3}(\d|X)$/i.test(code)){ 7 tip = "身份证号格式错误"; 8 pass = false; 9 } 10 11 else if(!city[code.substr(0,2)]){ 12 tip = "地址编码错误"; 13 pass = false; 14 } 15 else{ 16 //18位身份证需要验证最后一位校验位 17 if(code.length == 18){ 18 code = code.split(''); 19 //∑(ai×Wi)(mod 11) 20 //加权因子 21 var factor = [ 7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2 ]; 22 //校验位 23 var parity = [ 1, 0, 'X', 9, 8, 7, 6, 5, 4, 3, 2 ]; 24 var sum = 0; 25 var ai = 0; 26 var wi = 0; 27 for (var i = 0; i < 17; i++) 28 { 29 ai = code[i]; 30 wi = factor[i]; 31 sum += ai * wi; 32 } 33 var last = parity[sum % 11]; 34 if(parity[sum % 11] != code[17]){ 35 pass =false; 36 } 37 } 38 } 39 return pass; 40 }
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