JavaScript determines whether the ID card format is correct

This article talks about JavaScriptHow to determine whether the format of the ID card is correct. If you don’t understand JavaScript to determine whether the format of the ID card is correct, or you don’t know how to determine the format of the ID card using JavaScript If the format is correct and you are interested, then let’s take a look at this article. Okay, without further ado, let’s get to the point

1. During development, sometimes it involves character ID card registration, so what? Verify that the format of the ID card is correct. Next, attach a JS code to verify the format of the ID card:

var aCity={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"}
    function isCardID(sId){
        var iSum=0 ;
        if(!/^\d{17}(\d|x)$/i.test(sId)) return "你输入的身份证长度或格式错误";
        sId=sId.replace(/x$/i,"a");
        if(aCity[parseInt(sId.substr(0,2))]==null) return "身份证号格式错误";
        sBirthday=sId.substr(6,4)+"-"+Number(sId.substr(10,2))+"-"+Number(sId.substr(12,2));
        var d=new Date(sBirthday.replace(/-/g,"/")) ;
        if(sBirthday!=(d.getFullYear()+"-"+ (d.getMonth()+1) + "-" + d.getDate()))return "身份证号格式错误";
        for(var i = 17;i>=0;i --) iSum += (Math.pow(2,i) % 11) * parseInt(sId.charAt(17 - i),11) ;
        if(iSum%11!=1) return "身份证号格式错误！";
        //aCity[parseInt(sId.substr(0,2))]+","+sBirthday+","+(sId.substr(16,1)%2?"男":"女");//此次还可以判断出输入的身份证号的人性别
        return true;
    }

The above is all the content of this article. If you don’t know much about it, you can implement both sides by yourself. It’s easy to master!

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