b9c9a95223
* fix: renamed basic html cat photo app steps * fix: renamed css-variables project steps * fix: renamed d3-dashboard filenames * fix: renamed rpg-game filenames * fix: renamed functional-progamming-spreadsheet filenames * fix: renamed calorie-counter project filenames
6.2 KiB
6.2 KiB
id, title, challengeType, isHidden
| id | title | challengeType | isHidden |
|---|---|---|---|
| 5ddb965c65d27e1512d44dd3 | Part 60 | 0 | true |
Description
Add a class named cal-control to the calorieInput element. This is similar to how you added a class name to the foodInput element previously.
We are adding this class name because in the calculate() function you created previously, the total is calculated from the elements with the class name cal-control.
Instructions
Tests
tests:
- text: See description above for instructions.
testString: assert( code.replace(/\s/g, '').match(/calorieInput\.classList\.add\([\'\"\`]cal\-control[\'\"\`]\)/) );
Challenge Seed
<script>
document.getElementById('calorie-form').onsubmit = calculate;
function calculate(e) {
e.preventDefault();
const total = Array.from(document.getElementsByClassName('cal-control'))
.map(meal => Number(meal.value))
.reduce((accumulator, currentValue) => accumulator + currentValue, 0);
const maxCalories = document.getElementById('female').checked ? 2000 : 2500;
const difference = total - maxCalories;
const surplusOrDeficit = difference > 0 ? 'Surplus' : 'Deficit';
const output = document.getElementById('output');
const result = document.createElement('h3');
result.className = 'green-text';
const resultText = document.createTextNode(
`${Math.abs(difference)} Calorie ${surplusOrDeficit}`
);
result.appendChild(resultText);
output.appendChild(result);
const line = document.createElement('hr');
output.appendChild(line);
const recommended = document.createElement('h4');
const recommendedText = document.createTextNode(
`${maxCalories} Recommended Calories`
);
recommended.appendChild(recommendedText);
output.appendChild(recommended);
const consumed = document.createElement('h4');
consumed.innerHTML = `${total} Consumed Calories`;
output.appendChild(consumed);
output.setAttribute('class', 'bordered-class');
output.style.backgroundColor = '#FFF9C4';
}
document.getElementById('add').onclick = function() {
const foodInput = document.createElement('input');
foodInput.placeholder = 'food name';
foodInput.classList.add('food-control');
document.getElementById('entries').appendChild(foodInput);
const calorieInput = document.createElement('input');
calorieInput.setAttribute('type', 'number');
calorieInput.setAttribute('min', '0');
};
</script>
Before Test
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title></title>
<meta name="description" content="" />
<meta name="viewport" content="width=device-width, initial-scale=1" />
<link rel="stylesheet" href="styles.css" />
</head>
<body>
<div class="container">
<form id="calorie-form">
<h2 class="center">Calorie Counter</h2>
<div class="grid">
<legend>Sex</legend>
<div>
<input type="radio" name="sex" id="female" value="F" checked />
<label for="female">
Female (2,000 calories)
</label>
<div>
<input type="radio" name="sex" id="male" value="M" />
<label for="male">
Male (2,500 calories)
</label>
</div>
</div>
</div>
<div class="grid" id="entries">
Breakfast
<input
type="number"
min="0"
class="cal-control"
id="breakfast"
/><br />
Lunch
<input type="number" min="0" class="cal-control" id="lunch" /><br />
Dinner <input type="number" min="0" class="cal-control" id="dinner" />
</div>
<button type="button" class="btn-add" id="add">
Add Entry
</button>
<button type="submit" class="btn-solid" id="calculate">
Calculate
</button>
<button type="button" class="btn-outline" id="clear">
Clear
</button>
</form>
<div id="output"></div>
</div>
</body>
</html>
After Test
</body>
</html>
Solution
<script>
document.getElementById('calorie-form').onsubmit = calculate;
function calculate(e) {
e.preventDefault();
const total = Array.from(document.getElementsByClassName('cal-control'))
.map(meal => Number(meal.value))
.reduce((accumulator, currentValue) => accumulator + currentValue, 0);
const maxCalories = document.getElementById('female').checked ? 2000 : 2500;
const difference = total - maxCalories;
const surplusOrDeficit = difference > 0 ? 'Surplus' : 'Deficit';
const output = document.getElementById('output');
const result = document.createElement('h3');
result.className = 'green-text';
const resultText = document.createTextNode(
`${Math.abs(difference)} Calorie ${surplusOrDeficit}`
);
result.appendChild(resultText);
output.appendChild(result);
const line = document.createElement('hr');
output.appendChild(line);
const recommended = document.createElement('h4');
const recommendedText = document.createTextNode(
`${maxCalories} Recommended Calories`
);
recommended.appendChild(recommendedText);
output.appendChild(recommended);
const consumed = document.createElement('h4');
consumed.innerHTML = `${total} Consumed Calories`;
output.appendChild(consumed);
output.setAttribute('class', 'bordered-class');
output.style.backgroundColor = '#FFF9C4';
}
document.getElementById('add').onclick = function() {
const foodInput = document.createElement('input');
foodInput.placeholder = 'food name';
foodInput.classList.add('food-control');
document.getElementById('entries').appendChild(foodInput);
const calorieInput = document.createElement('input');
calorieInput.setAttribute('type', 'number');
calorieInput.setAttribute('min', '0');
calorieInput.classList.add('cal-control');
};
</script>