html set data attribute code example
Example 1: html javascript find data attribute
<button data-id="1" >Click</button>
<button data-id="2" >Click</button>
<button data-id="3" >Click</button>
const btns=document.querySelectorAll('button[data-id]');
[...btns].forEach(btn => console.log(btn.getAttribute('data-id')))
Example 2: javascript get data attribute value
const article = document.querySelector('#electric-cars');
article.dataset.columns
article.dataset.indexNumber
article.dataset.parent
Example 3: data attribute html
<!-- data-* attritubes can be used on any html element -->
<div data-my-custom-data="true"></div>
Example 4: html data attribute
<a data-color="blue">
This tag contains a user-defined color attribute
</a>
<div data-link="https://github.com/k-vernooy">
This tag contains a data attribute with a link
</div>