DOM Selectors
DOM Selectors
Section titled “DOM Selectors”Introduction
Section titled “Introduction”DOM selectors are methods that let you find elements in the DOM tree using CSS selector syntax or classic selection methods.
Topics Covered
Section titled “Topics Covered”- Modern Selectors — querySelector and querySelectorAll
- Classic Selectors — getElementById, getElementsByClassName
- Static vs Live — querySelectorAll vs getElementsBy* collections
Learning Objectives
Section titled “Learning Objectives”- Select single and multiple DOM elements
- Understand the difference between static and live collections
- Use CSS selector syntax for powerful element selection
Summary
Section titled “Summary”querySelector() and querySelectorAll() are the modern, flexible way to select elements. getElementById() is fastest for IDs. Prefer modern selectors.