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July 11, 2021 04:42 pm GMT

15 HTML5 best practices for beginners to master.

Whether you are a beginner or an expert in Hyper Text Markup Language (HTML) it is important to follow some best practices in order to keep your HTML documents consistent and organized.

HTML5 has been around for many years now and has been stable and supported at least partially supported by most major browsers since 2014. Here I present list of best coding practices regarding HTML5 markup. Lets get started:

  1. File Structure

    Be concerned to the project file structure from day one. Its extremely important for mid to large scale application for batter maintenance.

  2. Declare correct Doctype

    If correct Doctype is not declared new HTML5-specific tags will not interpreted by the browser.
    Declare correct Doctype

  3. Write w3c valid markup

    Use validator like w3c validator to check your markup and write error free more structured code. Validator will suggest you some best practice of HTML5 coding standard. I strongly recommend you to valid your code by w3c validator.

  4. HTML5 semantic elements

    Make sure correct use of the HTML5 semantic elements like: ,,,. Its will help you to write more structured piece of code.
    HTML5 semantic elements

  5. Meaningful img alt attribute

    Always try to use alt attribute with meaningful text in img tag. Its also best practice for SEO purpose.
    Meaningful img alt attribute

  6. Kebab-case class naming

    Use kebab-case while class naming. If you dont use any structured naming convention like, BEM convention.
    Kebab-case class naming

  7. Relevant selector naming

    Tried to use meaningful class naming relevant to your block of code .
    Tricks: Tried to use .noun-adjective format.
    Relevant selector naming

  8. Type attribute with link and script

    Dont need to use type attribute for external styleSheet and script linking in HTML5 structure.
    Type attribute with link and script

  9. Atomic Class

    Use specific class or atomic class when needed, try to use short meaningful class name.
    Atomic Class

  10. Variant class in parent element

    Tried to added class in parent element if need give another style to the same block or need same block different style.
    Variant class  in parent element

  11. Complex wrapping

    For better performance please tried to avoid unnecessary wrapping. It will create unnecessary node in your HTML tree and reduce performance too.
    Bad Practice
    Complex wrapping bad practice
    Good Practice
    Complex wrapping good Practice

  12. Closing tag

    It is best practice to always concern with closing starting tag even if it is self-closing tag.
    Closing tag

  13. Injecting external stylesheet

    External stylesheet always injects in tag. Because The HTML5 specification stated a element must have a rel attribute and if the rel attribute us used, the element is restricted to the head element.
    Injecting external styleSheet

  14. Injecting external script

    External script always injects at end of the body tag.
    As we know that HTML is loaded and execute line by line. So, when the browser encounters a script tag, it loads and executes the JavaScript code on the spot. This may low down the page rendering also JavaScript is often user to manipulate DOM and add new functionality to the webpage if script tag not added at end of the body tag, DOM may not be ready by that time this leading to unknown behavior.
    HTML5 Injecting external script

  15. Code Comments

    Its best practice to write human-readable code. Tried to comment your block of code. It will help you or any other developer to refactor the piece of code blocks.
    HTML5 Code Comments

Last Words

I hope you enjoy this article html5 coding guidelines and front end web development best practices. If you appreciate it or find any errors let me know in comments. Thanks for this journey & Happy Coding.


Original Link: https://dev.to/menomanabdulla/15-html5-best-practices-for-beginners-to-master-47fb

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