With the help of getAttribute() method, you can get the value of an attribute. The format of the getAttribute() method is
let attributeValue = htmlElement.getAttribute(attributeName);
For example, if you want to get the value of the src attribute of an img element, call the getAttribute() method and pass the src attribute to it.
HTML Code
<img src="/images/javascript.png" id="logo" />
JavaScript Code
let image = document.getElementById('logo');
let imageSource = image.getAttribute('src');
The best thing about the getAttribute() method is that you can get the value of data-* attribute using this method.
For example, to get the value of the data-color attribute of an img element, you have to select the img element and then call the getAttribute() method.
<img src="/images/javascript.png" data-color="yellow" id="logo" />
let image = document.getElementById('logo');
let imageSource = image.getAttribute('data-color');
