function strLength(str){
var time1 =
new Date;
if(str.length == 0 || !str)
return null;
var l =
str.length;
for(
var i = 0; i< str.length; i++
){
if(str.charCodeAt(i) > 255) l++
;
}
console.log("耗时：" + (
new Date - time1) + " 毫秒"
);
return l;
}
console.log(strLength(str));
转载于:https://www.cnblogs.com/leejersey/p/3951627.html
