find element with attribute javascript code example

Example 1: javascript select element with attribute

document.querySelectorAll('[attrname="value"]');

Example 2: javascript get attribute

//HTML
//


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

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

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

Example 4: dom element get attribute

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

Example 5: get element attribute javascript

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