js求字符长度

2021-10-12 15:03:29
 </script>

 <!DOCTYPE html>

 <html lang="en">

 <head>

     <meta charset="UTF-8">

     <title>Document</title>

 </head>

 <body>

     <script language="javascript" type="text/javascript">

     new function(s)

     {

     if(!arguments.length||!s) return null;

     if(""==s) return 0;

     var l=0;

     for(var i=0;i<s.length;i++)

     {

        if(s.charCodeAt(i)>255) l+=2;

        else l++;

     }

     alert(l);

     }("hello你好，我好,大家好！world!");

     </script>

     function(abcbcbcbcbbcbbc6666666666666666654444545454cccccccccccccccc);

 </body>

 </html>
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