Understanding JavaScript DOM Element Selection: querySelector vs getElementById
Introduction:
When working with JavaScript and manipulating the Document Object Model (DOM), selecting HTML elements is a common task. Two methods, `querySelector` and `getElementById`, are frequently used for this purpose. In this blog post, we will explore the differences between these methods and understand when to use each.
Check Demo. : JavaScript DOM Element Selection: querySelector vs getElementById
querySelector:
The `querySelector` method is a versatile tool for selecting elements based on CSS-style selectors. It allows you to target elements using various criteria such as class names, tag names, or attributes. Here’s a brief overview of its key aspects:
1. Syntax: `document.querySelector(selector)`
2. Returns: The first element that matches the specified CSS selector.
3. Usage: Ideal for scenarios where you need flexibility in selecting elements based on different criteria.
Example:
const element = document.querySelector('#myElementId');