//html代码<!DOCTYPE html><html><head> <meta charset="UTF-8"> <title>访问当当购物车页面节点</title> <link type="text/css" rel="stylesheet" href="css/cartStyle.css" /></head><body><div> <div> <img src="images/dd_logo.jpg"><span onclick="close_plan();">关闭</span> </div> <div id="cartList"> <ul> <li>¥<input type="text" name="price" value="21.90"></li> <li><input type="button" name="minus" value="-" onclick="minus(0);"><input type="text" name="amount" value="1"><input type="button" name="plus" value="+" onclick="plus(0);"></li> <li id="price0">¥21.90</li> <li><p onclick="collection();">移入收藏</p><p onclick="del();">删除</p></li> </ul> <ul> <li>¥<input type="text" name="price" value="24.00"></li> <li><input type="button" name="minus" value="-" onclick="minus(1);"><input type="text" name="amount" value="1"><input type="button" name="plus" value="+" onclick="plus(1);"></li> <li id="price1">¥24.00</li> <li><p onclick="collection();">移入收藏</p><p onclick="del();">删除</p></li> </ul> <ol> <li id="totalPrice"> </li> <li><span onclick="accounts();">结 算</span></li> </ol> </div> <div id="dismy"> </div></div><script type="text/javascript" src="js/shopping.js"></script><script type="text/javascript">function accounts(){var cartList=document.getElementById("cartList");var price1=cartList.firstElementChild.lastElementChild.previousElementSibling.innerHTML;//var pr1=price1.toFixed(2);//（这里想要保留小数点后两位，但因为有￥字符串，没办法截取？）//alert(pr1);var price2=cartList.lastElementChild.previousElementSibling.lastElementChild.previousElementSibling.innerHTML;var jie=cartList.lastElementChild.firstElementChild.innerHTML;var money = jie.substring(1);var xin="您本次购买的商品信息如下：<br/>白岩松：白说："+price1+"<br/>岛上书店："+price2+"<br/>商品共计："+money;document.getElementById("dismy").innerHTML= xin;}</script></body></html>//js代码/** * Created by zongjuan.wang on 2016/6/1. *//*关闭窗口*/function close_plan(){ window.close();}function collection(){ var flag=confirm("移入收藏后，将不再购物车显示，是否继续操作?"); if(flag==true){ alert("移入收藏成功!"); }}function del(){ var flag=confirm("您确定要删除商品吗?"); if(flag==true){ alert("删除成功!"); }}function minus(num){ var prices=document.getElementsByName("price")[num].value; var count=parseInt(document.getElementsByName("amount")[num].value)-1; if(count<1){ alert("不能再减了，再减就没有啦！"); } else{ document.getElementsByName("amount")[num].value=count; var totals=parseFloat(prices*count); document.getElementById("price"+num).innerHTML="¥" +totals; total(); }}function plus(num){ var prices=document.getElementsByName("price")[num].value; var count=parseInt(document.getElementsByName("amount")[num].value)+1; document.getElementsByName("amount")[num].value=count; var totals=parseFloat(prices*count); document.getElementById("price"+num).innerHTML="¥" +totals; total();}function total(){ var prices=document.getElementsByName("price"); var count=document.getElementsByName("amount"); var sum=0; for(var i=0; i<prices.length;i++){ sum+=prices[i].value*count[i].value; } document.getElementById("totalPrice").innerHTML="¥" +sum;}total();被加粗的代码哪里，麻烦会的同学，帮忙解答
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