Review Algorithmic Thinking by Building a Dice Game - Step 7

JavaScript
1

Tell us what’s happening:

I think i may not have imputed the right array parameter here:

 let sum0fScores = arr.reduce((a,b) => a + b, 0);

which was the parameter I inputted for the getHighestDuplicates function. consoles keep returning; cannot read properties of undefined (reading, ‘reduce’). Above i tried to use the param as the list of dice scores value, thus, to sum them up using the reduce method.

Your code so far

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


/* file: styles.css */


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

const getHighestDuplicates = (arr) => {
  const counts = {};

  let sum0fScores = arr.reduce((a,b) => a + b, 0);

  arr.forEach(score => {
    counts[score] = (counts[score] || 0) +1;
  })

  let fourOfAKind = false;
  let threeOfAKind = false;
  
  for (let score in counts) {
    if (counts[score] >= 4) {
      fourOfAKind = true;
      if(fourOfAKind) {updateRadioOption(0, score = sum0fScores);} 
    }
    else if (counts[score] >= 3) {
      threeOfAKind = true;
      if(threeOfAKind) {
       updateRadioOption(1, score = sum0fScores);}
    }
    else {
      updateRadioOption(5, 0);
    }
  }

}

rollDiceBtn.addEventListener("click", () => {
  if (rolls === 3) {
    alert("You have made three rolls this round. Please select a score.");
  } else {
    rolls++;
    rollDice();
    updateStats();
    getHighestDuplicates();
  }
});

// User Editable Region

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Challenge Information:

Review Algorithmic Thinking by Building a Dice Game - Step 7

2

You are calling your function with no argument

But you say an argument is needed here

3

Thank you for your feedback, would the input arr not be an arr param? The task mentioned to have an array param, the next closest i can think of would be the variable:

let diceValuesArr = [];

could such variable be used as a argument /param?

4

Where are you passing an array in during your function call ?

5

getHighestDuplicates(here)?

6

But like I said,you aren’t actually passing an array

7

oh that’s very true, i do the needful