题解 | #数组排序#
数组排序
https://www.nowcoder.com/practice/18ea36ef9b0c470e9db7681eced6e8df
{"html":"<!DOCTYPE html>\r\n<html lang=\"en\">\r\n <head>\r\n <meta charset=\"UTF-8\">\r\n </head>\r\n <body>\r\n <button class='up' onclick='up()'>销量升序</button>\r\n <button class='down' onclick='down()'>销量降序</button>\r\n <ul></ul>\r\n\r\n <script>\r\n var cups = [\r\n { type: 1, price: 100, color: 'black', sales: 3000, name: '牛客logo马克杯' },\r\n { type: 2, price: 40, color: 'blue', sales: 1000, name: '无盖星空杯' },\r\n { type: 4, price: 60, color: 'green', sales: 200, name: '老式茶杯' },\r\n { type: 3, price: 50, color: 'green', sales: 600, name: '欧式印花杯' }\r\n ]\r\n var ul = document.querySelector('ul');\r\n var upbtn = document.querySelector('.up');\r\n var downbtn = document.querySelector('.down');\r\n // 补全代码\r\n var arr=[]\r\n var arr0=[]\r\n cups.forEach((item)=>{\r\n arr.push({sales:item.sales,name:item.name})\r\n arr0.push({sales:item.sales,name:item.name})\r\n })\r\n\r\n arr.sort((a,b)=>{\r\n return a.sales>b.sales?-1:1\r\n })\r\n\r\n arr0.sort((a,b)=>{\r\n return a.sales>b.sales?1:-1\r\n })\r\n\r\nfunction up(){\r\n ul.innerHTML=''\r\n arr0.forEach((item,index)=>{\r\n let li=document.createElement('li')\r\n li.innerHTML=`${arr0[index].name}`\r\n ul.appendChild(li)\r\n })\r\n \r\n}\r\n\r\nfunction down(){\r\n ul.innerHTML=''\r\n arr.forEach((item,index)=>{\r\n let li=document.createElement('li')\r\n li.innerHTML=`${arr[index].name}`\r\n ul.appendChild(li)\r\n })\r\n}\r\n\r\n </script>\r\n </body>\r\n</html>","css":"/* html, body {\\n\\twidth: 100%;\\n\\theight: 100%;\\n\\tmargin: 0;\\n\\tpadding: 0;\\n} */","js":"// 请在这里输入代码"}
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