Is it possible to execute a function before or after each method of a factory or class is called in AngularJS or JavaScript?

Question

Is it possible to execute a function before or after each method of a factory or class is called in AngularJS or JavaScript?

In various programming languages such as Java, Ruby, and others, there is often a functionality to call a function before or after a method is executed. This feature is commonly provided by the frameworks being used. For example, Jasmine (a unit-testing library) has a method called beforeEach that runs a specified block of code before each it block.

My question is: Is there a similar way to achieve this in AngularJS or JavaScript, so that it can be executed before calling any method within a class or factory?

javascript angularjs

Answer 1

Answer №1

If you're looking to streamline the execution of your functions by incorporating common operations before and after, consider encapsulating them in a new function. Take a look at this example:

var wrappedFunction = function(fn) {
  return function(){
    console.log("Before executing " + fn.name);
    var retValue = fn.apply(this, arguments);
    console.log("After executing " + fn.name);
    return retValue;
  };
};

function funcExample1(parameter) {
  console.log("funcExample1 -> Parameter is: " + parameter);
};

function funcExample2(arg) {
  console.log("funcExample2 -> Argument value is: " + arg);
};

var funcExample1Wrapped = wrappedFunction(funcExample1);
var funcExample2Wrapped = wrappedFunction(funcExample2);

funcExample1Wrapped("Sample1");
funcExample2Wrapped("Sample2");

I hope this solution proves helpful for you. Farewell.

Answer 2

If you're looking to streamline the execution of your functions by incorporating common operations before and after, consider encapsulating them in a new function. Take a look at this example:

var wrappedFunction = function(fn) {
  return function(){
    console.log("Before executing " + fn.name);
    var retValue = fn.apply(this, arguments);
    console.log("After executing " + fn.name);
    return retValue;
  };
};

function funcExample1(parameter) {
  console.log("funcExample1 -> Parameter is: " + parameter);
};

function funcExample2(arg) {
  console.log("funcExample2 -> Argument value is: " + arg);
};

var funcExample1Wrapped = wrappedFunction(funcExample1);
var funcExample2Wrapped = wrappedFunction(funcExample2);

funcExample1Wrapped("Sample1");
funcExample2Wrapped("Sample2");

I hope this solution proves helpful for you. Farewell.

Is it possible to execute a function before or after each method of a factory or class is called in AngularJS or JavaScript?

Answer №1

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