AllChars : Hello. Length : 5
H
e
l
l
o
AllChars : HelloWorld. Length : 10
H
e
l
l
o
W
o
r
l
d
Got a exception. String.prototype.charAt: 'this' is null or undefined
>> FirstChar : undefined
Got a exception. String.prototype.charAt: 'this' is null or undefined
>> FirstChar : 0
0
<< FirstChar.
>> FirstChar : 1.1
1
<< FirstChar.
>> FirstChar : 10
1
<< FirstChar.
>> FirstChar : Hello
H
<< FirstChar.
>> FirstChar : true
t
<< FirstChar.
>> FirstChar : false
f
<< FirstChar.
>> FirstChar : true
t
<< FirstChar.
>> FirstChar : [object Object]
[
<< FirstChar.