get attribute valuejs code example
Example 1: javascript get attribute
//HTML
//<div id="elem" data-id="4hJ3s"></div>
var elem = document.getElementById("elem");
elem.getAttribute("data-id"); // "4hJ3s"
Example 2: javascript get data attribute value
const article = document.querySelector('#electric-cars');
article.dataset.columns // "3"
article.dataset.indexNumber // "12314"
article.dataset.parent // "cars"