javascript查找字符串中出现最多的字符和次数的小例子

  

复制代码 代码如下:

  <!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>无标题文档</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('最多的字符:'+value+',个数:'+num);

  </script>

  </head>

  <body>

  </body>

  </html>