CSS and JavaScript accessibility best practices.Accessibility - Make the web usable by everyone.CSS property compatibility table for form controls.Adding features to our bouncing balls demo.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.Typesetting a community school homepage.HTML table advanced features and accessibility.From object to iframe - other embedding technologies.Make sure to prevent form submission if the validation fails.ĭocument.getElementById("contactForm"). Add JavaScript code to the end of the file by placing it inside the tag in the same HTML file, add a script tag and a function to validate the form data when the user clicks the submit button.
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