length得到字符串长度“ 1234 ” .length返回4。
正如您所见，以各种编写系统编写的字符串的长度得到了错误的计算。
As you can see, the length of the strings written in various writing systems is miscalculated.
在每一个字符串的结尾，很可能得到只有一个或者两个单词的chunk，例如，下面的chunks拥有相等的长度且单词长度的方差也相等。
At the end of each string, it is very likely to have chunks with only one or two words.
指定想要得到字符串的长度，(可选，没有指定则返回从指定开始位置到原字符串结束位置)。
The number of characters in the substring. If this argument is omitted, the returned substring includes all characters from the starting position to the end of the string.
指定想要得到字符串的长度，(可选，没有指定则返回从指定开始位置到原字符串结束位置)。
The number of characters in the substring. If this argument is omitted, the returned substring includes all characters from the starting position to the end of the string.
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