how to get attribute value in javascript code example

Example 1: javascript get attribute

//HTML
//


var elem = document.getElementById("elem");
elem.getAttribute("data-id"); // "4hJ3s"

Example 2: javascript element read attribute

document.getElementById('id1').getAttribute('attribute');

Example 3: how to get element by attribute value in javascript

document.querySelectorAll('[data-foo="value"]');

Example 4: js getattribute

const link = document.querySelector('a');

console.log(link.getAttribute('href'));

Example 5: javascript get attribute

var elem = document.getElementById("id_of_the_element");
var attribute_value = elem.getAttribute("data-attribute_name");

//OR with jquery...
var attribute_value = $('#id_of_the_element').attr('data-attribute_name');
//OR...
var attribute_value = $('#id_of_the_element').data('attribute_name');

Example 6: get element attribute javascript

var x = document.getElementsByTagName("H1")[0].getAttribute("class");