THE WORLD'S LARGEST WEB DEVELOPER SITE

JS Tutorial

JS HOME JS Introduction JS Where To JS Output JS Statements JS Syntax JS Comments JS Variables JS Operators JS Arithmetic JS Assignment JS Data Types JS Functions JS Objects JS Events JS Strings JS String Methods JS Numbers JS Number Methods JS Arrays JS Array Methods JS Array Sort JS Array Iteration JS Dates JS Date Formats JS Date Get Methods JS Date Set Methods JS Math JS Random JS Booleans JS Comparisons JS Conditions JS Switch JS Loop For JS Loop While JS Break JS Type Conversion JS Bitwise JS RegExp JS Errors JS Scope JS Hoisting JS Strict Mode JS this Keyword JS Let JS Const JS Arrow Function JS Classes JS Debugging JS Style Guide JS Best Practices JS Mistakes JS Performance JS Reserved Words JS Versions JS 2009 (ES5) JS 2015 (ES6) JS 2016 JS 2017 JS JSON

JS Forms

JS Forms Forms API

JS Objects

Object Definitions Object Properties Object Methods Object Display Object Accessors Object Constructors Object Prototypes Object ECMAScript 5

JS Functions

Function Definitions Function Parameters Function Invocation Function Call Function Apply Function Closures

JS Classes

Class Intro Class Inheritance Class Static

JS Async

JS Callbacks JS Asynchronous JS Promises JS Async/Await

JS HTML DOM

DOM Intro DOM Methods DOM Document DOM Elements DOM HTML DOM CSS DOM Animations DOM Events DOM Event Listener DOM Navigation DOM Nodes DOM Collections DOM Node Lists

JS Browser BOM

JS Window JS Screen JS Location JS History JS Navigator JS Popup Alert JS Timing JS Cookies

JS AJAX

AJAX Intro AJAX XMLHttp AJAX Request AJAX Response AJAX XML File AJAX PHP AJAX ASP AJAX Database AJAX Applications AJAX Examples

JS JSON

JSON Intro JSON Syntax JSON vs XML JSON Data Types JSON Parse JSON Stringify JSON Objects JSON Arrays JSON PHP JSON HTML JSON JSONP

JS Web APIs

Web API Intro Web History API Web Storage API Web Worker API Web Geolocation API

JS vs jQuery

jQuery Selectors jQuery HTML jQuery CSS jQuery DOM

JS Examples

JS Examples JS HTML DOM JS HTML Input JS HTML Objects JS HTML Events JS Browser JS Editor JS Exercises JS Quiz JS Certificate

JS References

JavaScript Objects HTML DOM Objects


JavaScript HTML DOM Elements (Nodes)


Adding and Removing Nodes (HTML Elements)


Creating New HTML Elements (Nodes)

To add a new element to the HTML DOM, you must create the element (element node) first, and then append it to an existing element.

 Example

<div id="div1">
  <p id="p1">This is a paragraph.</p>
  <p id="p2">This is another paragraph.</p>
</div>

<script>
var para = document.createElement("p");
var node = document.createTextNode("This is new.");
para.appendChild(node);

var element = document.getElementById("div1");
element.appendChild(para);
</script>
Try it Yourself »

Example Explained 

This code creates a new <p> element:

var para = document.createElement("p");

To add text to the <p> element, you must create a text node first. This code creates a text node:

var node = document.createTextNode("This is a new paragraph.");

Then you must append the text node to the <p> element:

para.appendChild(node);

Finally you must append the new element to an existing element.

This code finds an existing element:

var element = document.getElementById("div1");

This code appends the new element to the existing element:

element.appendChild(para);


Creating new HTML Elements - insertBefore()

The appendChild() method in the previous example, appended the new element as the last child of the parent.

If you don't want that you can use the insertBefore() method:

Example

<div id="div1">
  <p id="p1">This is a paragraph.</p>
  <p id="p2">This is another paragraph.</p>
</div>

<script>
var para = document.createElement("p");
var node = document.createTextNode("This is new.");
para.appendChild(node);

var element = document.getElementById("div1");
var child = document.getElementById("p1");
element.insertBefore(para, child);
</script>
Try it Yourself »

Removing Existing HTML Elements

To remove an HTML element, use the remove() method:

Example

<div>
  <p id="p1">This is a paragraph.</p>
  <p id="p2">This is another paragraph.</p>
</div>

<script>
var elmnt = document.getElementById("p1");
elmnt.remove();
</script>
Try it Yourself »

Example Explained 

The HTML document contains a <div> element with two child nodes (two <p> elements):

<div>
  <p id="p1">This is a paragraph.</p>
  <p id="p2">This is another paragraph.</p>
</div>

Find the element you want to remove:

var elmnt = document.getElementById("p1");

Then execute the remove() method on that element:

elmnt.remove();

The remove() method does not work in older browsers, see the example below on how to use removeChild() instead.


Removing a Child Node

For browsers that does not support the remove() method, you have to find the parent node to remove an element:

Example

<div id="div1">
  <p id="p1">This is a paragraph.</p>
  <p id="p2">This is another paragraph.</p>
</div>

<script>
var parent = document.getElementById("div1");
var child = document.getElementById("p1");
parent.removeChild(child);
</script>
Try it Yourself »

Example Explained 

This HTML document contains a <div> element with two child nodes (two <p> elements):

<div id="div1">
  <p id="p1">This is a paragraph.</p>
  <p id="p2">This is another paragraph.</p>
</div>

Find the element with id="div1":

var parent = document.getElementById("div1");

Find the <p> element with id="p1":

var child = document.getElementById("p1");

Remove the child from the parent:

parent.removeChild(child);

Here is a common workaround: Find the child you want to remove, and use its parentNode property to find the parent:

var child = document.getElementById("p1");
child.parentNode.removeChild(child);

Replacing HTML Elements 

To replace an element to the HTML DOM, use the replaceChild() method:

Example

<div id="div1">
  <p id="p1">This is a paragraph.</p>
  <p id="p2">This is another paragraph.</p>
</div>

<script>
var para = document.createElement("p");
var node = document.createTextNode("This is new.");
para.appendChild(node);

var parent = document.getElementById("div1");
var child = document.getElementById("p1");
parent.replaceChild(para, child);
</script>
Try it Yourself »