HTML tutorial - How to debug HTML, CSS, and JavaScript?
HTML requires browser application to interpret and load.
Ways to debug HTML, CSS, JavaScript
- Browser DOM inspector
- Browser console
- JavaScript alert/console
- HTML code
Browser DOM inspector
Use the browser's developer tools: Most modern browsers come with built-in developer tools that can help you debug HTML. You can access these tools by right-clicking on the webpage and selecting "Inspect" or by using the keyboard shortcut Ctrl+Shift+I (Windows) or Cmd+Option+I (Mac).
Browser console
Run JavaScript in current web page, eg, document.getElementById('LearnCodeNow')
What is $0 in HTML?
$0 is used to represent the current selected tag of the HTML document in the DOM/Elements inspector.
HTML code
Check the HTML code for errors: Review your HTML code to ensure that it is properly structured and formatted. Some common errors include missing or mismatched tags, improper use of attributes, and incorrect nesting.
Validate your HTML code: You can use online validators such as W3C Validator to check your HTML code for errors and warnings.


