freeCodeCamp/part-06.md at 9ba1f1f6d0e1950e0e8e3e78721c82d8624540fb

lmilliken 39b0afd5f0 feat: tests for calorie counter

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

2.8 KiB

Raw Blame History

id, title, challengeType, isBeta

id	title	challengeType	isBeta
5ddb965c65d27e1512d44d9f	Part 06	0	true

Description

When a form is submitted, the browser will try to submit it to a server and reload the page. We want to prevent this from happening and do our own processing on the client side.

Prevent the default behavior of the form submit event by calling e.preventDefault() inside of the calculate function.

Instructions

Tests

tests:
  - text: See description above for instructions.
    testString: assert(calculate.toString().match(/e\.preventDefault\(\s*\)/));

Challenge Seed

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

  function calculate(e) {}
</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();
  }
</script>

2.8 KiB Raw Blame History