To display currency symbol in angular js you need provide HTML entity for currency symbols below are the examples and usage in through code and in template :
Inside your Template example of Euro:
Item Price<span style="font-weight:bold;">{{price | currency:"€"}}</span>
example of Rupee:
Item Price<span style="font-weight:bold;">{{price | currency:"₹"}}</span>
Also check below url
http://www.cs.tut.fi/~jkorpela/html/euro.html
From controller :
Inject $filter in your controller
$scope.price=$filter('currency')($scope.price,'€')