How HTML works, do you know?

Have you ever considered how a webpage is made and shown on your screen? The language used to construct online pages is HTML (Hypertext Markup Language), and understanding how it works is vital for anybody interested in web development or design. It is critical to understand your route to becoming a Web Developer. In this post, we’ll look at the fundamentals of HTML and how it’s used to produce the web pages we see daily.

What is HTML?

HTML (Hypertext Markup Language) is a programming language that is used to create web pages. It is a collection of codes web developers use to organise material such as text, photos, videos, and links on a webpage.

Consider HTML to be the foundation of construction. HTML gives structure and support for a web page in the same way that a foundation does for a building. It is the fundamental building component web developers use to create websites, allowing them to control how the material is presented on a webpage.

The Structure of an HTML Page

An HTML page is made up of many parts. The <html>, <head>, and <body> tags are the most crucial. The <html> element is used to specify the start and end of an HTML document. The <head> element gives information about the page, such as its title, whereas the <body> tag specifies the viewable content of the page.

Let’s take a closer look at each of the most significant components:

  • <html> – This tag defines the beginning and end of the HTML document. All other tags are contained within this tag.
  • <head> – This tag contains information about the document, such as the page title, metadata, and links to external stylesheets.
  • <body> – This tag is used to contain the visible content of the webpage, such as headings, paragraphs, images, and links.

And some additional tags:

  • <title> – This tag is used to define the title of the webpage, which appears in the browser’s title bar and as the default name when the page is bookmarked.
  • <img> – This tag is used to insert an image into the webpage, using the “src” attribute to specify the location of the image file.

HTML Tags and Elements

HTML elements are employed to describe the page’s structure and content. There are several tags available, each one with a different function. The most prevalent tags are:

  • Headings: Headings serve to define a page’s titles and subtitles. There are six distinct levels of headers, ranging from <h1> (the largest) to <h6> (the smallest) (the smallest).
  • Paragraphs: Paragraphs are used in HTML to arrange and organise text content on a web page. The HTML tag <p> represents a paragraph, which is used to encapsulate a block of text that is meant to be handled as a single unit.
  • Links: Links are used to making components on a page clickable. They are generated with the <a> element, and the href property is used to specify the URL for which the link points.
  • Images: Images are used to display pictures on a page. They are created using the <img> tag, with the src attribute used to define the URL of the image.
  • Lists: To generate lists in HTML, you can use either ordered or unordered lists. These lists are constructed with the HTML tags <ol> and <ul>, and each list item is defined with the <li> tag.

How HTML is Rendered

When a user requests that a web page be displayed, the browser downloads the HTML code from the web server, parses it to identify the components, generates a DOM representing the page’s structure, and displays the content using CSS. For interactive functionality, any JavaScript code is run. Ultimately, the user’s browser displays the completely produced web page. This process involves several steps, including:

  • Parsing: When a web page is loaded in the browser, the HTML code is read and a tree-like structure called the Document Object Model (DOM) is generated. This DOM represents the page’s structure and includes all the elements defined in the HTML code. Essentially, the DOM serves as a blueprint for the browser to use when rendering the web page for display to the user.
  • Rendering: The browser then renders the page on your screen using the DOM tree. It utilises the layout engine to place the items on the page and applies the styles given in the CSS code.
  • Layout and Painting: Finally, the browser applies any animations or interactions defined in the JavaScript code and paints the final result on your screen.

To summarise, HTML is the web’s basis and is required for everyone interested in web development or design. The first step in becoming a great web developer is to understand how HTML works and how it is utilised to construct web pages. We hope this article has given you a basic grasp of HTML and its function in the creation of web pages that you encounter every day.

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  1. What is the difference between HTML and CSS?

HTML is used to establish the structure and content of web pages, whereas CSS is used to determine the page’s visual design.

  1. Can I use HTML to create a mobile app?

No, HTML is used to create web pages.