114 lines
2.5 KiB
Markdown
114 lines
2.5 KiB
Markdown
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---
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id: 5ddb965c65d27e1512d44d9f
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title: Step 6
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challengeType: 0
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dashedName: step-6
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---
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# --description--
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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.
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Prevent the default behavior of the form submit event by calling `e.preventDefault()` inside of the `calculate` function.
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# --hints--
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See description above for instructions.
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```js
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assert(calculate.toString().match(/e\.preventDefault\(\s*\)/));
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```
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# --seed--
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## --before-user-code--
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```html
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<!DOCTYPE html>
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<html>
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<head>
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<meta charset="utf-8" />
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<title></title>
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<meta name="description" content="" />
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<meta name="viewport" content="width=device-width, initial-scale=1" />
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<link rel="stylesheet" href="styles.css" />
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</head>
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<body>
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<div class="container">
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<form id="calorie-form">
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<h2 class="center">Calorie Counter</h2>
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<div class="grid">
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<legend>Sex</legend>
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<div>
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<input type="radio" name="sex" id="female" value="F" checked />
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<label for="female">
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Female (2,000 calories)
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</label>
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<div>
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<input type="radio" name="sex" id="male" value="M" />
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<label for="male">
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Male (2,500 calories)
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</label>
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</div>
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</div>
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</div>
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<div class="grid" id="entries">
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Breakfast
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<input
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type="number"
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min="0"
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class="cal-control"
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id="breakfast"
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/><br />
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Lunch
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<input type="number" min="0" class="cal-control" id="lunch" /><br />
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Dinner <input type="number" min="0" class="cal-control" id="dinner" />
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</div>
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<button type="button" class="btn-add" id="add">
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Add Entry
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</button>
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<button type="submit" class="btn-solid" id="calculate">
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Calculate
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</button>
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<button type="button" class="btn-outline" id="clear">
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Clear
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</button>
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</form>
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<div id="output"></div>
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</div>
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</body>
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</html>
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```
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## --after-user-code--
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```html
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</body>
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</html>
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```
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## --seed-contents--
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```html
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<script>
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--fcc-editable-region--
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document.getElementById('calorie-form').onsubmit = calculate;
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function calculate(e) {}
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--fcc-editable-region--
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</script>
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```
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# --solutions--
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```html
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<script>
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document.getElementById('calorie-form').onsubmit = calculate;
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function calculate(e) {
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e.preventDefault();
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}
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</script>
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```
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