freeCodeCamp/part-47.md at b99d78858be1d1ab1aae3417e00c38a458a72ae3

lmilliken 39b0afd5f0 feat: tests for calorie counter

2020-09-16 11:54:00 +05:30

5.3 KiB

Raw Blame History

id, title, challengeType, isBeta

id	title	challengeType	isBeta
5ddb965c65d27e1512d44dc8	Part 47	0	true

Description

You can also add styling with the setAttribute() method. This method takes two arguments: the name of the attribute and the value that the attribute should be.

For example, if you want to set the width of an input element to 100px, you would write input.setAttribute('width', '100px').

Set the class attribute of the output element equal to a class named bordered-class.

Instructions

Tests

tests:
  - text: See description above for instructions.
    testString: assert( code.replace(/\s/g, '').match(/output\.setAttribute\([\'\"\`]class[\'\"\`]\,[\'\"\`]bordered-class[\'\"\`]\)/) );

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);

    //put your code here
  }
</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');
  }
</script>

5.3 KiB Raw Blame History