How to get dom object in javascript

How to get the DOM object? In JavaScript, you can get a DOM object using the following methods: getElementById(): Get a DOM element based on its ID attribute. getElementsByClassName(): Gets a collection of DOM elements based on the class attribute. getElementsByTagName(): Gets a collection of DOM elements based on tag names. querySelector(): Get a single DOM element based on a CSS selector. querySelectorAll(): Gets a collection of DOM elements based on CSS selectors.

How to get the DOM object in JavaScript

In JavaScript, there are several ways to get the Document Object Model (DOM) Object:

1. getElementById()

This method is used to get the DOM element based on its ID attribute.

<code class="javascript">const element = document.getElementById('my-element');</code>

2. getElementsByClassName()

This method is used to get a set of DOM elements based on their class attribute.

<code class="javascript">const elements = document.getElementsByClassName('my-class');</code>

3. getElementsByTagName()

This method is used to get a set of DOM elements based on their tag names.

<code class="javascript">const elements = document.getElementsByTagName('p');</code>

4. querySelector()

This method is used to get a single DOM element based on a CSS selector.

<code class="javascript">const element = document.querySelector('p#my-paragraph');</code>

5. querySelectorAll()

This method is used to get a set of DOM elements based on CSS selectors.

<code class="javascript">const elements = document.querySelectorAll('.my-class');</code>

Example

The following example uses the getElementById() method to get a paragraph element with the ID "my-paragraph":

<code class="javascript">const paragraph = document.getElementById('my-paragraph');
paragraph.innerHTML = 'Hello, JavaScript!';</code>

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