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freeCodeCamp/curriculum/challenges/english/02-javascript-algorithms-and-data-structures/debugging/catch-missing-open-and-closing-parenthesis-after-a-function-call.md
Nicholas Carrigan (he/him) 7117919d36 chore(learn): audit javascript algorithms and data structures (#41092)
* chore(learn): audit basic algorithm scripting

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* fix: apply suggestions - thanks Randy! :)

Co-authored-by: Randell Dawson <5313213+RandellDawson@users.noreply.github.com>

* fix: non-suggestion comments

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Removes the comments from the description and instruction code
blocks to ensure that all relevant information is translatable.

* fix: Apply suggestions from code review

Co-authored-by: Shaun Hamilton <51722130+ShaunSHamilton@users.noreply.github.com>

* fix: revert crowdin fix

* Update curriculum/challenges/english/02-javascript-algorithms-and-data-structures/basic-algorithm-scripting/mutations.md

Co-authored-by: Randell Dawson <5313213+RandellDawson@users.noreply.github.com>

* fix: Apply suggestions from code review

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* Update curriculum/challenges/english/02-javascript-algorithms-and-data-structures/es6/use-destructuring-assignment-to-assign-variables-from-arrays.md

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* fix: Apply suggestions from code review

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Co-authored-by: Shaun Hamilton <51722130+ShaunSHamilton@users.noreply.github.com>

* chore: change voice

* fix: Christopher Nolan

* fix: expressions would evaluate

* fix: will -> would

* Update curriculum/challenges/english/02-javascript-algorithms-and-data-structures/object-oriented-programming/add-methods-after-inheritance.md

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* fix: to work to push

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* Update curriculum/challenges/english/02-javascript-algorithms-and-data-structures/object-oriented-programming/add-methods-after-inheritance.md

Co-authored-by: Randell Dawson <5313213+RandellDawson@users.noreply.github.com>

Co-authored-by: Randell Dawson <5313213+RandellDawson@users.noreply.github.com>
Co-authored-by: Shaun Hamilton <51722130+ShaunSHamilton@users.noreply.github.com>
Co-authored-by: Oliver Eyton-Williams <ojeytonwilliams@gmail.com>
2021-03-02 17:12:12 -07:00

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---
id: 587d7b85367417b2b2512b39
title: Catch Missing Open and Closing Parenthesis After a Function Call
challengeType: 1
forumTopicId: 301185
dashedName: catch-missing-open-and-closing-parenthesis-after-a-function-call
---
# --description--
When a function or method doesn't take any arguments, you may forget to include the (empty) opening and closing parentheses when calling it. Often times the result of a function call is saved in a variable for other use in your code. This error can be detected by logging variable values (or their types) to the console and seeing that one is set to a function reference, instead of the expected value the function returns.
The variables in the following example are different:
```js
function myFunction() {
return "You rock!";
}
let varOne = myFunction;
let varTwo = myFunction();
```
Here `varOne` is the function `myFunction`, and `varTwo` is the string `You rock!`.
# --instructions--
Fix the code so the variable `result` is set to the value returned from calling the function `getNine`.
# --hints--
Your code should fix the variable `result` so it is set to the number that the function `getNine` returns.
```js
assert(result == 9);
```
Your code should call the `getNine` function.
```js
assert(code.match(/getNine\(\)/g).length == 2);
```
# --seed--
## --seed-contents--
```js
function getNine() {
let x = 6;
let y = 3;
return x + y;
}
let result = getNine;
console.log(result);
```
# --solutions--
```js
function getNine() {
let x = 6;
let y = 3;
return x + y;
}
let result = getNine();
console.log(result);
```