how to append text in javascript code example

Example 1: JavaScript append text to div

var div = document.getElementById('myElementID');
div.innerHTML += "Here is some more data appended";

Example 2: javascript append to paragraph

// In the JS script

var parElement = document.getElementById("myPar");
var textToAdd = document.createTextNode("Text to be added");
parElement.appendChild(textToAdd);

//In the HTML file

<p id="myPar"></p>

Example 3: how add text to element in javascript

var paragraph = document.getElementById("p");
var text = document.createTextNode("This just got added");

paragraph.appendChild(text);

Example 4: how to appendChild in the begin of the div javascript

var element = document.getElementById("div1");
element.insertBefore(para, element.firstChild);

Example 5: how to add text in javascript

<div id="mass">
<p id="ph1">This is a paragraph.</p>
<p id="ph2">This is another paragraph.</p>
</div>

<script>
var head = document.createElement("h1");
var node = document.createTextNode("New Heading.");
head.appendChild(node);

var ele = document.getElementById("mass");
var child = document.getElementById("ph1");
ele.insertBefore(head,child);
//ele.append(head,child);

Output : 
New Heading.
This is a paragraph.
This is another paragraph.