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How Does a Web Browser Load and Execute a Web Page\'s Components?

Patricia Arquette
Patricia ArquetteOriginal
2024-11-19 04:43:02172browse

How Does a Web Browser Load and Execute a Web Page's Components?

Understanding the Load and Execution Sequence of a Web Page

When a browser encounters a web page, it initiates a sequence of events to load and execute its various components. This process can be understood as a series of steps:

1. HTML Parsing:

  • The browser downloads the HTML document.
  • It begins parsing the HTML, creating a Document Object Model (DOM) that represents the page structure.

2. Resource Loading and Execution:

  • As the parser encounters external resources (e.g., CSS, JavaScript), it requests and downloads them.
  • CSS Loading: CSS files are downloaded and parsed, and styles are applied to the DOM.
  • Inline JavaScript: JavaScript code within