I\'m currently adding verbose tooltips to our site, and I\'d like (without having to resort to a whizz-bang jQuery plugin, I know there are many!) to use carriage returns to
This 
should work if you just use a simple title attribute.
on bootstrap popovers, just use data-html="true"
and use html in the data-content
attribute .
<div title="Hello 
World">hover here</div>
use data-html="true"
and apply <br>
.
will work on all majors browsers (IE included)
Just use this:
<a title='Tool
Tip
On
New
Line'>link with tip</a>
You can add new line on title by using this 

.
Razor Syntax
In the case of ASP.NET MVC you can just store the title as a variable as use \r\n
and it'll work.
@{
var logTooltip = "Sunday\r\nMonday\r\netc.";
}
<h3 title="@logTooltip">Logs</h3>
The latest specification allows line feed character, so a simple line break inside the attribute or entity
(note that characters #
and ;
are required) are OK.