freeCodeCamp/curriculum/challenges/german/15-javascript-algorithms-an.../learn-form-validation-by-bu.../step-004.md

2.4 KiB

id title challengeType dashedName
5ddb965c65d27e1512d44d9d Step 4 0 step-4

--description--

Create the calculate function that will hold the code to sum up the user's calorie inputs. Leave the body blank for now. Here is an example of an empty function called square:

function square() {}

--hints--

See description above for instructions.

assert(typeof calculate === 'function');

--seed--

--before-user-code--

<!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-user-code--

  </body>
</html>

--seed-contents--

<script>
  document.getElementById('calorie-form').onsubmit = calculate;
--fcc-editable-region--

--fcc-editable-region--
</script>

--solutions--

<script>
  document.getElementById('calorie-form').onsubmit = calculate;

  function calculate() {}
</script>