你如何获得一个字符串的前36个字符？

Question

我有一个字符串,我不知道它是否超过36个字符.如果它超过36个字符我只想要前36个字符:

var longString = "sdfkjhs3 234kjh khjk 234kjh 234kj h23k423h4 23k4";
var templongString = longString.substring... ?

编辑

我在努力

var longString = "sdfkjhs3 234kjh khjk 234kjh 234kj h23k423h4 23k4";
var templongString = templongString.substring(longstring, 36);

Answer 1

var templongString = longString.substring(0, 36);

这会将字符串截断为36个字符.