<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Document</title> </head> <body> <script type="text/javascript"> var a=prompt("电话号码").toString(); var v,vv; var b=a.split(''); var c=Array.from(new Set(b)); var d=c.sort(function(v,vv) { return vv-v; }); console.log(d); for(var i=0;i<b.length;i++) { for(var j=0;j<d.length;j++) { if(b[i]===d[j]) { console.log(j); } } } </script> </body> </html>
