event get attribute code example
Example 1: event target data atributes
event.target.getAttribute("data-sortorder");
Example 2: javascript get attribute
//HTML
//<div id="elem" data-id="4hJ3s"></div>
var elem = document.getElementById("elem");
elem.getAttribute("data-id"); // "4hJ3s"
Example 3: js get element by attribute
//find all elements with "someAttr" attribute
document.querySelectorAll('[someAttr]')