how to output a javascript variable in html code example

Example 1: how to print the value of variable in javascript in html

var name="kieran";
document.getElementById("output").innerHTML=name;

and the html code would be: 

<p id="output"></p>

Example 2: how to display javascript variable value in html page

// Plain Javascript Example
var $jsName = document.querySelector('.name');
var $jsValue = document.querySelector('.jsValue');

$jsName.addEventListener('input', function(event){
  $jsValue.innerHTML = $jsName.value;
}, false);


// JQuery example
var $jqName = $('.name');
var $jqValue = $('.jqValue');

$jqName.on('input', function(event){
  $jqValue.html($jqName.val());
});