get length of string

Topic description

If the second parameter bUnicode255For1 === true, all characters have length 1
else if character Unicode encoding > 255 then length 2

1  function strLength(s, bUnicode255For1) {
 2      if (bUnicode255For1=== true ){
 3          return s.length;
 4      }
 5      else {
 6          var slen = s.length;
 7          for ( var i = 0;i<s. length;i++ ){
 8              if (s.charCodeAt(i)>255){   // charCodeAt() returns the code value of the character, the Chinese character code value is greater than 255 
9                  slen++ ;
 10              }
 11          }
 12          return slen;
 13     }
14 }

 

Source: Niuke.com