How can I use that regex in angularJs expression?

Here I have a string with spaces, and I would like to replace the space(s) to a single dash '-'.

var card = "A World Elite Warrior";
console.log("card = " + card.toLowerCase().replace(/ /g,‘-’));

The output is a-world-elite-warrior, but I just want to use it in the html template as a angularjs expression like this:

<img ng-src=“images/cards/{{card.toLowerCase().replace(/ /g,‘-’)}}.png”

And it can not work, the error message is:

Error: [$parse:syntax] Syntax Error: Token ‘/’ not a primary expression at column 61 of the expression

#angular.js #regex