Learn Functional Programming by Building a Spreadsheet - Step 105

JavaScript
1

Tell us what’s happening:

could you please help me what is the last function

Your code so far

<!-- file: index.html -->


/* file: styles.css */


/* file: script.js */
// User Editable Region

const spreadsheetFunctions = {
  
  sum,
  average,
  median,
  even: nums => nums.filter(isEven),
  someeven: nums => nums.some(isEven),
  everyeven: nums => nums.every(isEven),
  firsttwo: nums => nums.slice(0, 2),
  lasttwo: nums => nums.slice(-2),
  has2: nums => nums.includes(2),
  increment: nums => nums.map(num => num + 1),
  random: ([x, y]) => Math.floor(Math.random() * y + x),
  range: nums => range(...nums),
  nodupes: nums => [...new Set(nums).values()],
}

// User Editable Region

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Challenge Information:

Learn Functional Programming by Building a Spreadsheet - Step 105

2

Hi there!

Read carefully the instructions:
add an empty string property (you will need to use quotes) which is a function that takes a single argument and returns that argument.

Use the key/pair value Syntex, add empty string(pair of a quote marks) then return a callback function with a parameter

You have used that callback function in previous lines of codes.

3

your code has to be getting something and returning that something in a function so I just created a parameter “e” and returned it in my function like this:
mod edit: code removed
his code gets e and then returns it! I hope I helped!

4

It is great that you solved the challenge, but instead of posting your full working solution, it is best to stay focused on answering the original poster’s question(s) and help guide them with hints and suggestions to solve their own issues with the challenge.

We are trying to cut back on the number of spoiler solutions found on the forum and instead focus on helping other campers with their questions and definitely not posting full working solutions.