How to set a Javascript variable from my View using a ViewBag property

Question

I would like to set a JavaScript variable in my view (inside a script block) based on the existences of a ViewBag property from the controller... like:

var doAboutTab = @(ViewBag.DoAboutTab != null)

This generates a JavaScript error of:

var doAboutTab = False

'False is not defined'

Answer 1

@if(ViewBag.DoAboutTab != null)
{
    var doAboutTab ="something";
}else
{
    var doAboutTab ="something_else";
}

or

var doAboutTab = '@ViewBag.DoAboutTab' !== '';

Answer 2

The false keyword is lower case in javascript.

var doAboutTab = @((ViewBag.DoAboutTab != null).ToString().ToLower());