Issue - Q. How to use data- attribute in html5?

[RockL30]

Fixed code since getElementById is not working

According to mdn we can use querySelector -
-> https://developer.mozilla.org/en-US/docs/Learn/HTML/Howto/Use_data_attributes

const article = document.querySelector("#electric-cars");

article.dataset.columns; // "10"
article.dataset.indexNumber; // "100"
article.dataset.parent; // "cars"

[learning-zone]

Thanks for creating issue, Code has been updated now.