---
id: 5ef9b03c81a63668521804db
title: Part 40
challengeType: 0
dashedName: part-40
---
# --description--
To prevent a user from submitting your form when required information is missing, you need to add the `required` attribute to an `input` element. There's no need to set a value to the `required` attribute. Instead, just add the word `required` to the `input` element, making sure there is space between it and other attributes.
# --hints--
You have either deleted your `input` element or it has invalid syntax. All attributes' values should be surrounded by quotation marks.
```js
assert($('input').length);
```
Your `form` should only contain the `input` element. Remove any HTML additional elements or text within the `form` element.
```js
assert(
$('form')[0].children.length === 1 &&
$('form')[0].innerText.trim().length === 0
);
```
Your `input` element should have a `required` attribute. Remember, you just add the word `required` inside the `input` element's tag.
```js
assert($('input')[0].hasAttribute('required'));
```
A value should not be given to the `required` attribute.
```js
assert($('input')[0].getAttribute('required') === '');
```
# --seed--
## --seed-contents--
```html