[js selector] #js #dom #javascript

Getting an element by its id

 const elem = document.getElementById( 'exampleDiv' );

Getting elements by class name

const elems = document.getElementsByClassName( 'example')

  const elem = document.querySelector( 'img.class' );
  const elems = document.querySelectorAll( 'img.class, #id1' );

Getting elements by tag name

const elems = document.getElementsByTagName( 'div' );

Parent node

<div id="div1">
  <div id="div2">
    <div id="div3"> Some text here </div>
  </div>
</div>
<script>
  const div3 = document.getElementById( 'div3' );
  const div2 = div3.parentNode;
  const div1 = div2.parentNode;
</script>