This exercise allows you to practice and apply the concepts and techniques taught in class.

Upon completion of this exercise, you will be able to:

• Run predefined tests in Jasmine to check that JavaScript program meets the technical requirements.
• Identify expected code behavior by reading and understanding test results and errors.
• Pass arrays and primitive values as arguments to functions.
• Use the return keyword to return a value from a function.
• Access, add, remove, and check for items in an array using the index and array methods (unshift, push, splice, shift, pop, indexOf, and includes).
• Use loops and forEach method to iterate over arrays.

If you are stuck in your code and don't know how to solve the problem or where to start, you should take a step back and try to form a clear question about the specific issue you are facing. This will help you narrow down the problem and come up with potential solutions.

For example, is it a concept that you don't understand, or are you receiving an error message that you don't know how to fix? It is usually helpful to try to state the problem as clearly as possible, including any error messages you are receiving. This can help you communicate the issue to others and potentially get help from classmates or online resources.

Once you have a clear understanding of the problem, you will be able to start working toward the solution.

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One possible reason why all of the Jasmine tests are failing is that there is a syntax error in the code being tested. If the code contains a syntax error, it will not be loaded properly and none of the tests will be able to run. This will cause all of the tests to fail.

To troubleshoot this issue, you will need to examine the code being tested for syntax errors. Look for missing brackets, semicolons, or other syntax issues that could be causing the problem. If you find a syntax error, correct it and try running the tests again.

Another possibility is that there is an issue with the tests. It is possible that you may have modified the test file and caused an issue. If you have made changes to the test file, try copying and pasting the original test file and running the tests again to see if this resolves the issue.

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To find the length of a string, use the length property. Here is an example:

const str = "Hello, world!"";
console.log(str.length); // 13

The length property returns the number of characters in the string, including spaces and special characters.

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Loops allow you to repeat a block of code a certain number of times. There are several ways to loop over an array in JavaScript:

The for loop is the most traditional way to loop through an array in JavaScript. It consists of three parts: the initialization, the condition, and the increment/decrement:

const animals = ['cat', 'dog', 'bird'];

// initialize counter variable (let i = 0)
// set condition (i < animals.length)
// increment counter (i++)
for (let i = 0; i < animals.length; i++) {
  console.log(animals[i]);
}

In initialization, you declare a counter variable and set its initial value.

The condition is a boolean expression that is evaluated before each iteration of the loop. If the condition is true, the loop will continue. Once the condition turns false, the loop will terminate.

The increment/decrement is where you update the counter variable and it happens at the end of each iteration.

The block of code inside the loop is repeated during each iteration.

The while loop is another way to loop through an array in JavaScript. It consists of a condition and a block of code that is executed as long as the condition is true.

Like the for loop, the while loop requires a counter variable to keep track of the current position in the array. The counter variable must be initialized before the loop and incremented or decremented at the end of each iteration.

const animals = ['cat', 'dog', 'bird'];

// initialize a counter variable (i)
let i = 0;

// set condition (i < animals.length)
while (i < animals.length) {
  console.log(animals[i]);
  
  // increment counter (i++)
  i++;
}

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The forEach() method executes a provided function once for each array element. It does not return a new array but rather executes the function on each element in the array.

The syntax of the forEach() method is as follows:

array.forEach( function(element) {
  // code to be executed for each element
});

Here is an example that uses the forEach() method to log each element and its index in an array to the console:

const fruits = ['apple', 'banana', 'cherry'];

fruits.forEach( function(element, index) {
  console.log(`${index}: ${element}`);
});

You can also use an arrow function as the callback function for forEach():

fruits.forEach((element, index) => {
  console.log(`${index}: ${element}`);
});

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If you try to access the .length property on an array (e.g., array.length) but get undefined, it means that the variable you are accessing is not actually an array.

How do I fix this?

Check that the variable you are trying to access is actually an array.

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Your function might not be correctly checking for the longest element in the array. In other words, there may be an issue with the logic of the conditional statements in the function or with the comparison being used in the conditionals.

To fix this issue, you should check the logic of the conditional statements in the function.

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To compare the length of each string in an array in JavaScript, you can use a loop to iterate through the array and compare the length of each string using the .length property.

Here is an example of how you loop over an array:

function findLongestWord(words) {
  for (let i = 0; i < words.length; i++) {
    console.log(words[i]);
  }
}

To compare the length of each element, you should use a conditional statement in the following way:

  if ( words[i].length > longestWord.length) {
    console.log(`${words[i].length} is longer than ${longestWord.length}`);
  }

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There are a couple of possible reasons why you may be unable to push changes to a Git repository:

1. You have not committed your changes: Before you can push your changes to the repository, you need to commit them using the git commit command. Make sure you have committed your changes and try pushing again. To do this, run the following terminal commands from the project folder:

git add .
git commit -m "Your commit message"
git push

2. You do not have permission to push to the repository: If you have cloned the repository directly from the main Ironhack repository without making a Fork first, you do not have write access to the repository. To check which remote repository you have cloned, run the following terminal command from the project folder:

git remote -v

If the link shown is the same as the main Ironhack repository, you will need to fork the repository to your GitHub account first and then clone your fork to your local machine to be able to push the changes.

Note: You should make a copy of your local code to avoid losing it in the process.

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