js實現升序和降序
阿新 • • 發佈：2019-05-07
升序 document code htm cti ret type doctype itl
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title></title> </head> <body> <script> function sortUp(a,b){ return a-b; } function sortDown(a,b){ return b-a; } var arr=new Array(6); arr[0]=10; arr[1]=5; arr[2]=8; arr[3]=30; arr[4]=55; arr[5]=32; // 升序 document.write(arr.sort(sortUp)); // 5,8,10,30,32,55 //降序 document.write(arr.sort(sortDown)); // 55,32,30,10,8,5 </script> </body> </html>
js實現升序和降序