What is the best way to break out of a function halfway through?

Question

What is the best way to break out of a function halfway through?

What are your thoughts on using nested if statements?

$scope.addToCart = function () {
    if (flagA) {
        if (flagB) {
            if (flagC) {
                alert('nononono!');
                return;
            }
        }
    }
    executeAnotherFunction();
};

I'm working with the following function:

$scope.addToCart = function () {
    var foo = 5;
    if (someFlag == 'Y') {
        alert('warning!');
        return;
    }
    executeAnotherFunction();
};

I call this function somewhere in my code

ng-click = "addToCart()"

My goal is to exit the function if

someFlag == 'Y'

and avoid executing

executeAnotherFunction();

However, it seems that the function still executes it.

According to WebStorm, it suggests that the return statement is unnecessary and could be safely removed.

javascript angularjs function

Answer 1

Answer №1

If you are confident that the if statement is true, but the return function isn't working, you can also test placing someAnotherFunction(); inside the else block:

if (someFlag == 'Y') {
    alert('warning!');
    return;
}
else {
    someAnotherFunction();
}

This way, someAnotherFunction() will only be executed if the condition in the if statement is false.

Note

The original code should function properly and this is just a temporary solution, as mentioned in the comment. Nevertheless, both approaches achieve the same objective in theory.

For more information, refer to this question - for further insight into the distinctions.

Answer 2

If you are confident that the if statement is true, but the return function isn't working, you can also test placing someAnotherFunction(); inside the else block:

if (someFlag == 'Y') {
    alert('warning!');
    return;
}
else {
    someAnotherFunction();
}

This way, someAnotherFunction() will only be executed if the condition in the if statement is false.

Note

The original code should function properly and this is just a temporary solution, as mentioned in the comment. Nevertheless, both approaches achieve the same objective in theory.

For more information, refer to this question - for further insight into the distinctions.

Answer 3

Answer №2

To include the invocation of the different function, consider placing it within the else statement:

$scope.addToCart = function () {
    var foo = 5;
    if (someFlag == 'Y') {
        alert('warning!');
        return;
    } else {
      invokeDifferentFunction();
    }

};

This adjustment will help clarify the situation for you.

Answer 4

To include the invocation of the different function, consider placing it within the else statement:

$scope.addToCart = function () {
    var foo = 5;
    if (someFlag == 'Y') {
        alert('warning!');
        return;
    } else {
      invokeDifferentFunction();
    }

};

This adjustment will help clarify the situation for you.

What is the best way to break out of a function halfway through?

Answer №1

Answer №2

Similar questions

Angular styling and form error issue

Dealing with side effects in react/redux: Best practices and tips

Is utilizing a single endpoint for the 'put' method sufficient to make updates to a document containing nested arrays?

Tips for integrating NPM Modules with Flask

Angular - Manipulating the selected option in a select box from the controller

Is there a gentle approach to transferring calendar event variables in JavaScript?

Encountered a 'Require() of ES Module' Error while Implementing Visx with Nextjs

Get JSON information based on index position

I am having trouble retrieving the content-length from the response headers within the app.use() middleware function

The code attempted to use `app.set`, but received a TypeError because `app.get` is

What is the correct way to remove listeners in componentWillUnmount using React, and why is binding necessary in the constructor?

Combining AngularJS with PhoneGap camera plugin and utilizing the Facebook Open Graph API

Inspect the key within a complex hierarchy of nested objects in an array

The jQuery plugin embedded in the Joomla 3.2 module fails to load or function properly

Setting up yeoman-generator only to realize it's nowhere to be found

collaborating with numerous JavaScripts

What is the best method for aligning buttons in a row with all the other buttons?

Dynamic search form technology

jQuery alert: A TypeError was caught stating that the object being referred to does not have the 'dialog' method available

Ways to resolve the issue of data not displaying on the page, even though it appears in the