What is the correct way to define a function parameter when using AngularJS Emit?

I've been exploring the emit feature in AngularJS and had a question about passing a function as an argument.

In the Parent Controller:

$scope.$on("getChildFunction", function(event, func) {
    console.log("The function is...", func);
})

In the Child Controller:

$scope.$emit("getChildFunction", $scope.load_function());

However, I noticed that when inspecting the web page, the func variable is not returning any value. Is it possible to pass functions to the parent scope using emit?

Answer №1

To pass the function itself without executing it, leave out the parenthesis:

$scope.$emit("getChildFunction", $scope.load_function);

If you include the parenthesis, the function will be executed and only the result of the function will be passed.

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