JavaScript: Entity in document.title

How can I add a dash to my document.title using JavaScript?
<script type="text/javascript">
 document.title='Hello &#8212; World';

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Which browser version?
Work for me :
document.title = "Hello - World"

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hankknightAuthor Commented:
Thanks, but my question is about how to get a numbered entity into the title.

"—" is NOT the same a "-", it is much wider.  I want to define it with the entity number, &#8212;
Ok, new one :

document.head.getElementsByTagName("title")[0].innerHTML = "Hello &#8212; World";

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David S.Commented:
Special characters are written differently in JavaScript than they are in HTML. More info:,_Variables,_and_Literals#Unicode_Escape_Sequences

You convert the number to hexadecimal (assuming you're using a decimal character entity) and prefix it with "\u", like this:
document.title='Hello \u2014 World';

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