SOURCE

function generateCode(cityCode, birthDay, orderCode, genderCode) {
		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 "};
		var tip = "";
		var pass= true;
		let code = `${cityCode}${birthDay}${orderCode}${genderCode}`;
        //∑(ai×Wi)(mod 11)
        //加权因子
        var factor = [ 7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2 ];
        //校验位
        var parity = [ 1, 0, 'X', 9, 8, 7, 6, 5, 4, 3, 2 ];
        var sum = 0;
        var ai = 0;
        var wi = 0;
        for (var i = 0; i < 17; i++)
        {
            ai = code[i];
            wi = factor[i];
            sum += ai * wi;
        }
        var last = parity[sum % 11];
		return `${code}${last}`;
	}
    console.log(generateCode('350600','19981028', '03', '8'))