# 
#  Overview
The **`attr`** method is used to find the attributes of HTML elements and interact with them. Interactions with HTML elements may include changing the attribute value or deleting the attribute. This method is provided by the **`Mojo::DOM`** module, which is an HTML/XML DOM parser with CSS selectors.
#       
## Syntax
```
$dom->attr('attribute');
```

Where an example of the `attribute` is `id`.
##     
## Return value
This method will return the `attribute` value if we try to find it. It will return the `Mojo::DOM` object if we change the `attribute` value.


Let's look at an example of this:

#       
#  Code example
The given HTML is as follows:
```
<div>
   Inside div 
   <p id="a">Inside first paragraph </p>
   <p id="b">Inside second paragraph</p>
</div>
```
If we use the `attr` method to  find the value of the `id` attribute for the first descendant element of the given element `p`, we will get the following output for the given HTML.

```
a
```
##      
## Code example

use 5.010;
use Mojo::DOM;

# Parse the html
my $dom = Mojo::DOM->new('<div>Inside div <p id="a">Inside first paragraph </p><p id="b">Inside second paragraph</p></div>');

# Find attribute attribute value
say $dom->at('p')->attr('id');

example

# 
## Code explanation

* Line 2: We import the `Mojo::DOM` module.
* Line 5: We parse the HTML and store it in the `$dom` scalar.
* Line 8: We find the attribute value of an attribute `id` for the first descendant of the given element `p`. Then, we print the result to the console.

# 
## Code explanation

* Line 2: We import the `Mojo::DOM` module.
* Line 5: We parse the HTML and store it in the `＄dom` scalar.
* Line 8: We find the attribute value of an attribute `id` for the first descendant of the given element `p`. Then, we print the result to the console.

perl.tar.gz

What is the Mojo::DOM module's attr method?

The attr method in Mojo::DOM is used to interact with HTML element attributes, retrieving or modifying them.