![]() What is this? Unclosed attributes: Another common source of HTML problems. Then its effect can spread to areas you didn't intendīadly nested elements: Nesting elements properly is also very importantįor code behaving correctly. Unclosed elements: If an element is not closed properly, HTML debugging examples What causes errors in HTML? Browsers have built-in rules to state how to interpret incorrectly written markup, so you'll get something running, even if it is not what you expected. HTML itself doesn't suffer from syntax errors because browsers parse it permissively, meaning that the page still displays even if there are syntax errors. These are often harder to fix than syntax errors, as there isn't an error message to direct you to the source of the error. Logic errors: These are errors where the syntax is actually correct, but the code is not what you intended it to be, meaning that the program runs incorrectly.These are usually easy to fix as long as you are familiar with the language's syntax and know what the error messages mean. Syntax errors: These are spelling or punctuation errors in your code that actually cause the program not to run, like the Rust error shown above.So what do we mean by permissive? Well, generally when you do something wrong in code, there are two main types of error that you'll come across: Express Tutorial Part 7: Deploying to production.Express Tutorial Part 6: Working with forms.Express Tutorial Part 5: Displaying library data.Express Tutorial Part 4: Routes and controllers.Express Tutorial Part 3: Using a database (with Mongoose).Express Tutorial Part 2: Creating a skeleton website.Express tutorial: The Local Library website.Setting up a Node (Express) development environment.Express Web Framework (Node.js/JavaScript) overview.Express Web Framework (node.js/JavaScript).Tutorial Part 11: Deploying Django to production.Tutorial Part 10: Testing a Django web application.Tutorial Part 8: User authentication and permissions.Tutorial Part 6: Generic list and detail views.Tutorial Part 5: Creating our home page.Tutorial Part 2: Creating a skeleton website.Setting up your own test automation environment.Building Angular applications and further resources.Advanced Svelte: Reactivity, lifecycle, accessibility.Dynamic behavior in Svelte: working with variables and props.Vue conditional rendering: editing existing todos.Adding a new todo form: Vue events, methods, and models.Ember Interactivity: Footer functionality, conditional rendering.Ember interactivity: Events, classes and state.Ember app structure and componentization.React interactivity: Editing, filtering, conditional rendering.Client-side web development tools index.Assessment: Three famous mathematical formulas.MathML - Writing mathematics with MathML.Assessment: Accessibility troubleshooting.CSS and JavaScript accessibility best practices.Accessibility - Make the web usable by everyone.CSS property compatibility table for form controls.Assessment: Adding features to our bouncing balls demo.Introducing JavaScript objects overview.Making decisions in your code - Conditionals.Basic math in JavaScript - Numbers and operators.Storing the information you need - Variables. ![]() What went wrong? Troubleshooting JavaScript.JavaScript - Dynamic client-side scripting.Assessment: Fundamental layout comprehension.Assessment: Typesetting a community school homepage.Assessment: Creating fancy letterheaded paper.Assessment: Fundamental CSS comprehension.HTML table advanced features and accessibility.From object to iframe - other embedding technologies.Assessment: Structuring a page of content.
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