MVC - pass ViewData as boolean

When passing boolean value from controller to the view using ViewData, how do I retrieve it as a boolean value in javascript? example:

Controller:

ViewData["login"] = true;

View

    <script type="text/javascript">
var login = <%= (bool)ViewData["Login"] %>;   /// this doesn't work, throw javascript error;
</script>

yeh surely i can do

  <script type="text/javascript">
var login = '<%= ViewData["Login"] %>';  开发者_如何学运维 /// now login is a string 'True'
</script>

But i rather keep login object as a boolean rather a string if that's possible.

Just remove the single quotes.

<script type="text/javascript">
    var login = <%= (bool)ViewData["Login"] ? "true" : "false" %>;
</script>

This will result in:

var login = true;

Which will be parsed as a boolean in the browser.

I believe you could do this:

<script type="text/javascript"> 
    var login = new Boolean(<%= (bool)ViewData["Login"] ? "true" : "false" %>);
</script> 

edit: actually the first way I had it wouldn't work. The true/false values passed to Boolean() must be lowercase for this to work.