javascript find elements with attribute code example

Example 1: javascript select element with attribute

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

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: how to get element by attribute value in javascript

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

Example 4: js get element by attribute

//find all elements with "someAttr" attribute
document.querySelectorAll('[someAttr]')