function(str){ var realLength = 0, len = str.length, charCode = -1; for (var i = 0; i < len; i++) { charCode = str.charCodeAt(i); if (charCode >= 0 && charCode <= 128) { realLength += 1; } else { realLength += 2; } } return realLength ;}
function(str){
var realLength = 0, len = str.length, charCode = -1;
for (var i = 0; i < len; i++) {
charCode = str.charCodeAt(i);
if (charCode >= 0 && charCode <= 128) {
realLength += 1;
}
else {
realLength += 2;
return realLength ;