Learn Form Validation by Building a Calorie Counter - Step 90

Step 90 of Calorie Counter - Unable to get for loop right:

I am unable to pass my code indicating that:

Your for loop should iterate through the inputContainers array. Remember to use i as your iterator.

isn’t the statement in below code doing it?:

inputContainers[i].innerHTML = '';

My code

The for loop in clearForm function definition is where I have to make changes to pass this lesson.

const calorieCounter = document.getElementById('calorie-counter');
const budgetNumberInput = document.getElementById('budget');
const entryDropdown = document.getElementById('entry-dropdown');
const addEntryButton = document.getElementById('add-entry');
const clearButton = document.getElementById('clear');
const output = document.getElementById('output');
let isError = false;

function cleanInputString(str) {
  const regex = /[+-\s]/g;
  return str.replace(regex, '');

function isInvalidInput(str) {
  const regex = /\d+e\d+/i;
  return str.match(regex);

function addEntry() {
  const targetInputContainer = document.querySelector(`#${entryDropdown.value} .input-container`);
  const entryNumber = targetInputContainer.querySelectorAll('input[type="text"]').length + 1;
  const HTMLString = `
  <label for="${entryDropdown.value}-${entryNumber}-name">Entry ${entryNumber} Name</label>
  <input type="text" id="${entryDropdown.value}-${entryNumber}-name" placeholder="Name" />
  <label for="${entryDropdown.value}-${entryNumber}-calories">Entry ${entryNumber} Calories</label>
  targetInputContainer.insertAdjacentHTML('beforeend', HTMLString);

function calculateCalories(e) {
  isError = false;

  const breakfastNumberInputs = document.querySelectorAll('#breakfast input[type=number]');
  const lunchNumberInputs = document.querySelectorAll('#lunch input[type=number]');
  const dinnerNumberInputs = document.querySelectorAll('#dinner input[type=number]');
  const snacksNumberInputs = document.querySelectorAll('#snacks input[type=number]');
  const exerciseNumberInputs = document.querySelectorAll('#exercise input[type=number]');

  const breakfastCalories = getCaloriesFromInputs(breakfastNumberInputs);
  const lunchCalories = getCaloriesFromInputs(lunchNumberInputs);
  const dinnerCalories = getCaloriesFromInputs(dinnerNumberInputs);
  const snacksCalories = getCaloriesFromInputs(snacksNumberInputs);
  const exerciseCalories = getCaloriesFromInputs(exerciseNumberInputs);
  const budgetCalories = getCaloriesFromInputs([budgetNumberInput]);

  if (isError) {

  const consumedCalories = breakfastCalories + lunchCalories + dinnerCalories + snacksCalories;
  const remainingCalories = budgetCalories - consumedCalories + exerciseCalories;
  const surplusOrDeficit = remainingCalories >= 0 ? 'Surplus' : 'Deficit';
  output.innerHTML = `
  <span class="${surplusOrDeficit.toLowerCase()}">${Math.abs(remainingCalories)} Calorie ${surplusOrDeficit}</span>
  <p>${budgetCalories} Calories Budgeted</p>
  <p>${consumedCalories} Calories Consumed</p>
  <p>${exerciseCalories} Calories Burned</p>


function getCaloriesFromInputs(list) {
  let calories = 0;

  for (let i = 0; i < list.length; i++) {
    const currVal = cleanInputString(list[i].value);
    const invalidInputMatch = isInvalidInput(currVal);

    if (invalidInputMatch) {
      alert(`Invalid Input: ${invalidInputMatch[0]}`);
      isError = true;
      return null;
    calories += Number(currVal);
  return calories;

function clearForm() {
  const inputContainers = Array.from(document.querySelectorAll('.input-container'));
  for (i = 0; i < inputContainers.length; i++) {
    inputContainers[i].innerHTML = '';

addEntryButton.addEventListener("click", addEntry);
calorieCounter.addEventListener("submit", calculateCalories);

My browser information:

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:121.0) Gecko/20100101 Firefox/121.0

Challenge Information:

Learn Form Validation by Building a Calorie Counter - Step 90

Ran this code through chatGPT and asked for bug in clearForm function.


The bug in the clearForm function is that the variable i is not declared with let, const, or var. This can lead to unexpected behavior because i becomes a global variable, which might interfere with other scripts or iterations in the same scope.

By adding let before i, you ensure that the variable i has block scope (it only exists within the loop), preventing it from affecting other parts of your script or global namespace.

Right… time for a break from lessons.

1 Like

This gave me an idea, to run through A.I when i have a problem and have him explain the problem to me… This helps…

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