javascript

Javascript looks for a small example of the number of characters and the number of occurrences in a string

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 
 <html xmlns="http://www.w3.org/1999/xhtml"> 
 <head> 
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> 
 <title> Headless document </title> 
 <script> 
 var str = 'hskflassssssssskssssdssssussssghgfhssssdsssfh'; 
 var arr = str.split(''); 
 arr.sort(); 
 str = arr.join(''); 
 var re = /(w)1+/g; 
 var value = ''; 
 var num = 0; 
 str.replace(re,function($0,$1){ 
 if($0.length > num){ 
 num = $0.length; 
 value = $1; 
 } 
 }); 
 alert(' Most characters :'+value+', The number of :'+num); 
 </script> 
 </head> 
 <body> 
 </body> 
 </html>