Using ngClass for conditional styling, here is the usage from the docs:
/**
* @ngModule CommonModule
*
* @usageNotes
* ```
* <some-element [ngClass]="'first second'">...</some-elem...
https://msdn.microsoft.com/en-us/library/dn986595.aspx
x?.y – null conditional member access. Returns null if the left hand operand is null.
a?[x] – null conditional indexing. Returns null if the...
Knowing how conditionals work in bash open up a world of scripting possibilities. We’ll learn the basic syntax, including if, else, and elif. Then we'll look at a few of the "primary" operators you ...
http://msdn.microsoft.com/en-us/library/ms537512(VS.85).aspx
http://www.quirksmode.org/css/condcom.html
Item Example Comment ! [if !IE] The NOT operator. This is placed imme...
