AngularJS: Transitioning from Expressions to Javascript (Coffeescript)

Looking to convert an expression into JavaScript in order to maintain an object's value in $scope:

<dl class = "mortgage-information">
    <dt><abbr title = "Loan-to-value Ratio">LTV</abbr></dt>
    <dd>{{(total_financing ? total_financing : financing)/ property_value}}</dd>
</dl>

However, when converting the same expression to JavaScript, it always uses financing and not total_financing (Coffeescript):

$scope.ltv = (if $scope.total_financing then $scope.total_financing else $scope.financing) / $scope.property_value

Despite reading through the documentation on angular expressions, I haven't found a satisfactory solution. Any recommendations for a smoother transition of expressions to JavaScript?

javascriptangularjscoffeescript

Answer №1

$scope.ltv = ($scope.total_financing ? $scope.total_financing : $scope.financing) / $scope.property_value;

Does this solution meet your requirements?

Answer №2

It appears that your Javascript code needs some corrections. Unlike Visual Basic or other languages, JavaScript uses a different syntax for if-else constructs:

if(...) {
   doSomething
} else {
   doSomeThingElse
}

Additionally, ensure that you are assigning an expression to a variable and not a statement, as the if-else construct is. As Nikhil suggested, you can use a ternary operator or create a function like this:

$scope.ltv = function() {
   if($scope.total_financing) {
      return $scope.total_financing; 
   } 
   return $scope.financing;
}

You can then call this function in your HTML binding using {{ltv()}}.

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