还款比较器

var CalculatorHkbj = {    els: {        //贷款总额        money: $("#DataMoney"),        //贷款年限        year: $("#DataYear"),        //贷款利率        lilv: $("#DataLilv"),        //等额本息-首期还款        xiFirst: $("#ResultXiFirst"),                    //等额本息-期末还款        xiLast: $("#ResultXiLast"),                    //等额本息-首期还款        xiAll: $("#ResultXiAll"),                    //等额本金-首期还款        jinFirst: $("#ResultJinFirst"),                    //等额本金-期末还款        jinLast: $("#ResultJinLast"),                    //等额本金-首期还款        jinAll: $("#ResultJinAll"),        //计算        run: $("#Run")    },    init: function(){        var me = this;        this.els.run.click(function(){            if(me.els.money.val() == ""){                alert("贷款总额不能为空！");            }else{                var data = {                    money: me.els.money.val(),                    year: me.els.year.val(),                    lilv: me.els.lilv.val()                };                //计算本息方式                me.doXi(data);                //计算本金方式                me.doJin(data);             }        });    },    //计算本息方式    doXi: function(data){         var _p = data.money * 10000, _s = data.lilv, _y = data.year,            _months = _y*12,//月数            _ms = _s/100/12,//月利率            _result = {};//输出        _result.monthMoney = (_p * (_ms * Math.pow(1 + _ms, _months)) / (Math.pow((1 + _ms), _months) - 1)).toFixed(2);        _result.allMoney = (_result.monthMoney * _months).toFixed(2);        _result.interest = (_result.allMoney - _p).toFixed(2);             this.els.xiFirst.html(this.toNum(_result.monthMoney), 1);        this.els.xiLast.html(this.toNum(_result.monthMoney, 1));        this.els.xiAll.html(this.toNum(_result.allMoney, 1));    },    //计算本金方式    doJin: function(data) {        var money = data.money;        var percent = data.lilv/100;        var date = data.year*12;        var format = 1;        var obj, obj1,                A = money * 10000, B = percent / 12,          N = date * 1;        obj = {          money: this.toNum(A,format),          month: this.toNum(N,format),          per : this.toNum(A * B * Math.pow(1+B, N)/(Math.pow((1+B),N) - 1),format),          ext : this.toNum(A * N * B * Math.pow(1+B, N) / (Math.pow(1+B, N) - 1) - A,format),          total: this.toNum(A * N * B * Math.pow(1+B, N)/(Math.pow(1+B, N) - 1),format)      };      obj1 = {          money: this.toNum(A,format),          month: this.toNum(N,format),          per : this.toNum(A * (1+N*B)/N,format),          perA: this.toNum(A*B/N,format),          ext : this.toNum((N+1)*A*B/2,format),          total: this.toNum(A + (N+1)*A*B/2,format),          last: this.toNum((((A/date)*percent)/12 + (A/date)),format)      };      //(总额/期数)*(1+利率/12)      this.els.jinFirst.html(obj1.per);      this.els.jinLast.html(obj1.last);      this.els.jinAll.html(obj1.total);      //return {"obj": obj, "obj1": obj1};    },    toNum: function(num, format){        num = Number(num);        if(!num) return "";                if (format) {            return number_format(Math.round(num*1000)/1000, 0, '', ',');        } else {            return Math.round(num*1000)/1000;        }    }};CalculatorHkbj.init();function number_format (number, decimals, dec_point, thousands_sep) {    number = (number + '').replace(/[^0-9+\-Ee.]/g, '');    var n = !isFinite(+number) ? 0 : +number,        prec = !isFinite(+decimals) ? 0 : Math.abs(decimals),        sep = (typeof thousands_sep === 'undefined') ? ',' : thousands_sep,        dec = (typeof dec_point === 'undefined') ? '.' : dec_point,        s = '',        toFixedFix = function (n, prec) {            var k = Math.pow(10, prec);            return '' + Math.round(n * k) / k;        };    // Fix for IE parseFloat(0.55).toFixed(0) = 0;    s = (prec ? toFixedFix(n, prec) : '' + Math.round(n)).split('.');    if (s[0].length > 3) {        s[0] = s[0].replace(/\B(?=(?:\d{3})+(?!\d))/g, sep);    }    if ((s[1] || '').length < prec) {        s[1] = s[1] || '';        s[1] += new Array(prec - s[1].length + 1).join('0');    }    return s.join(dec);}