how to get id value in javascript code example

Example 1: value from getelementbyid

document.getElementById('numbers').value

Example 2: js get id value

var element = document.getElementById("YourElementId");
var value_element = document.getElementById("YourElementId").value;

Example 3: Finding HTML Element by Id

var myElement = document.getElementById("intro");

Example 4: get id of element javascript

var element = document.getElementsByTagName("div")[0];
var id = element.id;