Basic DOM Manipulation in JavaScript

Introduction

We are all familiar with JavaScript. This article is for those who have not touched JavaScript yet. Here I will tell you how to do simple DOM manipulations in JavaScript.

Creation

If you want to create a new element in the DOM, you can do as follows:

Var myDiv = document.createElement('div');

Addition

If you want to add a new element to the existing element, you can do as follows.

document.body.appendChild(div);

Here I am appending a div to the body.

Style manipulation

If you want to add some styles to an existing element, you can do as follows.

Positioning

div.style.right = '142px';
div.style.left = '26px';

Modification 

Using classes:

If you want to assign a class name to an existing element, you can do as follows:


div.className = 'myClassName';

Using ID:


div.id = 'myID';

Change the contents

using HTML:


div.innerHTML = '<div class="myClassName">This is my HTML</div>';

using text:


div.textContent = 'This is my text';

Removal

To remove an element from the DOM:

div.parentNode.removeChild(div);

Here we are removing a div from the parent node.

Accessing

We can access the elements in several ways. Let us see that now.

ID

document.getElementById('myID');

Tags

document.getElementsByTagName('p');

Class

document.getElementsByClassName('myClassName');

CSS selector

document.querySelector('div #myID .myClassName');

That's all.

I hope someone finds this useful. Thanks for reading.

Kindest Regards,

Sibeesh