====== JavaScript - SubString ======

Extract starting at position 2, and extract the rest of the string:

<code javascript>
var str = "Hello world!";
var res = str.substring(2);
</code>

Result:

<code>
llo world!
</code>



If "start" is greater than "end", it will swap the two arguments:

<code javascript>
var str = "Hello world!";
var res = str.substring(4, 1);
</code>

Result:

<code>
ell
</code>



If "start" is less than 0, it will start extraction from index position 0:

<code javascript>
var str = "Hello world!";
var res = str.substring(-3);
</code>

Result:

<code>
Hello world!
</code>



Extract only the first character:

<code javascript>
var str = "Hello world!";
var res = str.substring(0, 1);
</code>

Result:

<code>
H
</code>



Extract only the last character:

<code javascript>
var str = "Hello world!";
var res = str.substring(11, 12);
</code>

Result:

<code>
!
</code>