querySelector() in javascript

querySelector() method in javascript

querySelector() method is used to retrieve the first descendant element of the given element.

Example - Retrieves the first element

Try Yourself

Example Explanation

  • In the above example there is a table element, with th, tr and td elements.
  • Here first we retrieves the table element (document.getElementById("tableID");) and stored in elem.
  • Next we retrieves the first descendant element, using the th value (elem.querySelector("th").innerHTML).