---
id: 5ef9b03c81a63668521804df
title: Part 45
challengeType: 0
dashedName: part-45
---
# --description--
The `id` attribute is used to identify specific HTML elements. Each `id` attribute's value must be unique all other `id` values for the entire page.
Add an `id` attribute with the value `indoor` to the radio button. When elements have multiple attributes, the order of the attributes doesn't matter.
# --hints--
Your radio button should still be located between the opening and closing tags of the `label` element.
```js
const labelChildNodes = [...$('form > label')[0].childNodes];
assert(
labelChildNodes.filter((childNode) => childNode.nodeName === 'INPUT').length
);
```
Your radio button should have an `id` attribute. Check that there is a space after the opening tag's name and/or there are spaces before all attribute names.
```js
assert($('input')[0].hasAttribute('id'));
```
Your radio element should have an `id` attribute with the value `indoor`. You have either omitted the value or have a typo. Remember that attribute values should be surrounded with quotation marks.
```js
assert($('input')[0].id.match(/^indoor$/));
```
# --seed--
## --seed-contents--
```html