let myBody = document.getElementById('myBody'),

    otherBody = document.body,

    moduleOne = document.querySelectorAll('.module')[0],

    moduleTwo = document.querySelectorAll('.module')[1];

​

// using isSameNode

console.log(myBody.isSameNode(otherBody));

console.log(moduleOne.isSameNode(moduleTwo));

​

// using isEqualNode

console.log(myBody.isEqualNode(otherBody));

console.log(moduleOne.isEqualNode(moduleTwo));