diff --git a/common/bigc.js b/common/bigc.js
new file mode 100644
index 0000000..11660e7
--- /dev/null
+++ b/common/bigc.js
@@ -0,0 +1 @@
+!function(e){"use strict";var r,i=20,s=1,P=1e6,o=-7,f=21,c="[big.js] ",u=c+"Invalid ",b=u+"decimal places",h=u+"rounding mode",x=c+"Division by zero",l={},D=void 0,a=/^-?(\d+(\.\d*)?|\.\d+)(e[+-]?\d+)?$/i;function R(e,r,t,n){var i=e.c,s=e.e+r+1;if(s<i.length){if(1===t)n=5<=i[s];else if(2===t)n=5<i[s]||5==i[s]&&(n||s<0||i[s+1]!==D||1&i[s-1]);else if(3===t)n=n||!!i[0];else if(n=!1,0!==t)throw Error(h);if(s<1)i.length=1,n?(e.e=-r,i[0]=1):i[0]=e.e=0;else{if(i.length=s--,n)for(;9<++i[s];)i[s]=0,s--||(++e.e,i.unshift(1));for(s=i.length;!i[--s];)i.pop()}}else if(t<0||3<t||t!==~~t)throw Error(h);return e}function t(e,r,t,n){var i,s,o=e.constructor,f=!e.c[0];if(t!==D){if(t!==~~t||t<(3==r)||P<t)throw Error(3==r?u+"precision":b);for(t=n-(e=new o(e)).e,e.c.length>++n&&R(e,t,o.RM),2==r&&(n=e.e+t+1);e.c.length<n;)e.c.push(0)}if(i=e.e,t=(s=e.c.join("")).length,2!=r&&(1==r||3==r&&n<=i||i<=o.NE||i>=o.PE))s=s.charAt(0)+(1<t?"."+s.slice(1):"")+(i<0?"e":"e+")+i;else if(i<0){for(;++i;)s="0"+s;s="0."+s}else if(0<i)if(++i>t)for(i-=t;i--;)s+="0";else i<t&&(s=s.slice(0,i)+"."+s.slice(i));else 1<t&&(s=s.charAt(0)+"."+s.slice(1));return e.s<0&&(!f||4==r)?"-"+s:s}l.abs=function(){var e=new this.constructor(this);return e.s=1,e},l.cmp=function(e){var r,t=this,n=t.c,i=(e=new t.constructor(e)).c,s=t.s,o=e.s,f=t.e,c=e.e;if(!n[0]||!i[0])return n[0]?s:i[0]?-o:0;if(s!=o)return s;if(r=s<0,f!=c)return c<f^r?1:-1;for(o=(f=n.length)<(c=i.length)?f:c,s=-1;++s<o;)if(n[s]!=i[s])return n[s]>i[s]^r?1:-1;return f==c?0:c<f^r?1:-1},l.div=function(e){var r=this,t=r.constructor,n=r.c,i=(e=new t(e)).c,s=r.s==e.s?1:-1,o=t.DP;if(o!==~~o||o<0||P<o)throw Error(b);if(!i[0])throw Error(x);if(!n[0])return new t(0*s);var f,c,u,h,l,a=i.slice(),g=f=i.length,p=n.length,w=n.slice(0,f),d=w.length,v=e,m=v.c=[],E=0,M=o+(v.e=r.e-e.e)+1;for(v.s=s,s=M<0?0:M,a.unshift(0);d++<f;)w.push(0);do{for(u=0;u<10;u++){if(f!=(d=w.length))h=d<f?1:-1;else for(l=-1,h=0;++l<f;)if(i[l]!=w[l]){h=i[l]>w[l]?1:-1;break}if(!(h<0))break;for(c=d==f?i:a;d;){if(w[--d]<c[d]){for(l=d;l&&!w[--l];)w[l]=9;--w[l],w[d]+=10}w[d]-=c[d]}for(;!w[0];)w.shift()}m[E++]=h?u:++u,w[0]&&h?w[d]=n[g]||0:w=[n[g]]}while((g++<p||w[0]!==D)&&s--);return m[0]||1==E||(m.shift(),v.e--),M<E&&R(v,o,t.RM,w[0]!==D),v},l.eq=function(e){return!this.cmp(e)},l.gt=function(e){return 0<this.cmp(e)},l.gte=function(e){return-1<this.cmp(e)},l.lt=function(e){return this.cmp(e)<0},l.lte=function(e){return this.cmp(e)<1},l.minus=l.sub=function(e){var r,t,n,i,s=this,o=s.constructor,f=s.s,c=(e=new o(e)).s;if(f!=c)return e.s=-c,s.plus(e);var u=s.c.slice(),h=s.e,l=e.c,a=e.e;if(!u[0]||!l[0])return l[0]?(e.s=-c,e):new o(u[0]?s:0);if(f=h-a){for((n=(i=f<0)?(f=-f,u):(a=h,l)).reverse(),c=f;c--;)n.push(0);n.reverse()}else for(t=((i=u.length<l.length)?u:l).length,f=c=0;c<t;c++)if(u[c]!=l[c]){i=u[c]<l[c];break}if(i&&(n=u,u=l,l=n,e.s=-e.s),0<(c=(t=l.length)-(r=u.length)))for(;c--;)u[r++]=0;for(c=r;f<t;){if(u[--t]<l[t]){for(r=t;r&&!u[--r];)u[r]=9;--u[r],u[t]+=10}u[t]-=l[t]}for(;0===u[--c];)u.pop();for(;0===u[0];)u.shift(),--a;return u[0]||(e.s=1,u=[a=0]),e.c=u,e.e=a,e},l.mod=function(e){var r,t=this,n=t.constructor,i=t.s,s=(e=new n(e)).s;if(!e.c[0])throw Error(x);return t.s=e.s=1,r=1==e.cmp(t),t.s=i,e.s=s,r?new n(t):(i=n.DP,s=n.RM,n.DP=n.RM=0,t=t.div(e),n.DP=i,n.RM=s,this.minus(t.times(e)))},l.plus=l.add=function(e){var r,t=this,n=t.constructor,i=t.s,s=(e=new n(e)).s;if(i!=s)return e.s=-s,t.minus(e);var o=t.e,f=t.c,c=e.e,u=e.c;if(!f[0]||!u[0])return u[0]?e:new n(f[0]?t:0*i);if(f=f.slice(),i=o-c){for((r=0<i?(c=o,u):(i=-i,f)).reverse();i--;)r.push(0);r.reverse()}for(f.length-u.length<0&&(r=u,u=f,f=r),i=u.length,s=0;i;f[i]%=10)s=(f[--i]=f[i]+u[i]+s)/10|0;for(s&&(f.unshift(s),++c),i=f.length;0===f[--i];)f.pop();return e.c=f,e.e=c,e},l.pow=function(e){var r=this,t=new r.constructor(1),n=t,i=e<0;if(e!==~~e||e<-1e6||1e6<e)throw Error(u+"exponent");for(i&&(e=-e);1&e&&(n=n.times(r)),e>>=1;)r=r.times(r);return i?t.div(n):n},l.round=function(e,r){var t=this.constructor;if(e===D)e=0;else if(e!==~~e||e<-P||P<e)throw Error(b);return R(new t(this),e,r===D?t.RM:r)},l.sqrt=function(){var e,r,t,n=this,i=n.constructor,s=n.s,o=n.e,f=new i(.5);if(!n.c[0])return new i(n);if(s<0)throw Error(c+"No square root");for(o=(e=0===(s=Math.sqrt(n+""))||s===1/0?((r=n.c.join("")).length+o&1||(r+="0"),o=((o+1)/2|0)-(o<0||1&o),new i(((s=Math.sqrt(r))==1/0?"1e":(s=s.toExponential()).slice(0,s.indexOf("e")+1))+o)):new i(s)).e+(i.DP+=4);t=e,e=f.times(t.plus(n.div(t))),t.c.slice(0,o).join("")!==e.c.slice(0,o).join(""););return R(e,i.DP-=4,i.RM)},l.times=l.mul=function(e){var r,t=this.constructor,n=this.c,i=(e=new t(e)).c,s=n.length,o=i.length,f=this.e,c=e.e;if(e.s=this.s==e.s?1:-1,!n[0]||!i[0])return new t(0*e.s);for(e.e=f+c,s<o&&(r=n,n=i,i=r,c=s,s=o,o=c),r=new Array(c=s+o);c--;)r[c]=0;for(f=o;f--;){for(o=0,c=s+f;f<c;)o=r[c]+i[f]*n[c-f-1]+o,r[c--]=o%10,o=o/10|0;r[c]=o}for(o?++e.e:r.shift(),f=r.length;!r[--f];)r.pop();return e.c=r,e},l.toExponential=function(e){return t(this,1,e,e)},l.toFixed=function(e){return t(this,2,e,this.e+e)},l.toPrecision=function(e){return t(this,3,e,e-1)},l.toString=function(){return t(this)},l.valueOf=l.toJSON=function(){return t(this,4)},(r=function t(){function n(e){var r=this;if(!(r instanceof n))return e===D?t():new n(e);e instanceof n?(r.s=e.s,r.e=e.e,r.c=e.c.slice()):function(e,r){var t,n,i;if(0===r&&1/r<0)r="-0";else if(!a.test(r+=""))throw Error(u+"number");for(e.s="-"==r.charAt(0)?(r=r.slice(1),-1):1,-1<(t=r.indexOf("."))&&(r=r.replace(".","")),0<(n=r.search(/e/i))?(t<0&&(t=n),t+=+r.slice(n+1),r=r.substring(0,n)):t<0&&(t=r.length),i=r.length,n=0;n<i&&"0"==r.charAt(n);)++n;if(n==i)e.c=[e.e=0];else{for(;0<i&&"0"==r.charAt(--i););for(e.e=t-n-1,e.c=[],t=0;n<=i;)e.c[t++]=+r.charAt(n++)}}(r,e),r.constructor=n}return n.prototype=l,n.DP=i,n.RM=s,n.NE=o,n.PE=f,n.version="5.2.2",n}()).default=r.Big=r,"function"==typeof define&&define.amd?define(function(){return r}):"undefined"!=typeof module&&module.exports?module.exports=r:e.Big=r}(this);
\ No newline at end of file
diff --git a/pages/goodsDetail/index.vue b/pages/goodsDetail/index.vue
index fdfb5e7..ecd00c9 100644
--- a/pages/goodsDetail/index.vue
+++ b/pages/goodsDetail/index.vue
@@ -3,8 +3,8 @@
 		<block v-if="isRight(goods_detail)">
 			<!-- 商品图片轮播 -->
 			<swiper :current="current" :indicator-dots="true" :circular="true" class="swiper-box" indicator-active-color="#FE9903">
-				<swiper-item v-for="item in goods_detail.banners" :key="item.id">
-					<image :src="item.cover" style="width: 100%; height: 100%;"></image>
+				<swiper-item v-for="(item, index) in goods_detail.banners" :key="item.id">
+					<image :src="item.cover" style="width: 100%; height: 100%;" @click="lookImg(index)"></image>
 					<!-- <image :src="item.cover" mode="aspectFit"></image> -->
 				</swiper-item>
 			</swiper>
@@ -153,7 +153,16 @@
 				let goods_id = this.goods_detail.id;
 				let goods_specs_id = this.goods_detail.specs[0].id
 				this.$url('/pages/order/confirm-order?goods_id='+ goods_id +'&goods_specs_id='+ goods_specs_id);
-			}
+			},
+			// 预览图片
+			lookImg(index){
+				let goods_banner = this.goods_detail.banners || [];
+				let banners = goods_banner.map(item => item.cover);
+				uni.previewImage({
+					urls: banners,
+					current: index
+				})
+			},
 		},
 		onShareAppMessage(){
 			let goods = this.goods_detail;
diff --git a/pages/order/confirm-order.vue b/pages/order/confirm-order.vue
index df976af..993f672 100644
--- a/pages/order/confirm-order.vue
+++ b/pages/order/confirm-order.vue
@@ -62,7 +62,8 @@
 						<view class="flex align-center">
 							<text class="lf-font-28 text-gray">应付款：</text>
 							<view class="text-red text-price lf-font-42 lf-font-bold">
-								{{Number(orderDetails.goods.specs[0].selling_price*num  || 0)}}
+								<!-- {{Number(orderDetails.goods.specs[0].selling_price*num  || 0)}} -->
+								{{ total(num, orderDetails.goods.specs[0].selling_price) }}
 							</view>
 						</view>
 						<button class="cu-btn block bg-orange round shadow" @tap="submit">
@@ -78,6 +79,8 @@
 </template>
 
 <script>
+	import bigc from '@/common/bigc.js';
+	
 	export default {
 		data() {
 			return {
@@ -102,7 +105,11 @@
 		},
 		computed: {
 			total(){
-				return this.num * this.price
+				return function(num, price){
+					let big_num = new bigc(Number(num));
+					big_num = big_num.times(Number(price));
+					return big_num.round(2, 0).toString();
+				}
 			},
 			isRight(){
 				return function(val){