Once we know how to change states, it is important to define how to change the control's value: the control is in any other state than open and the user clicks on it.the control was in its open state and the user clicks on it.the user hits the tab key and it gains focus.the user clicks on it or touches it on a touch screen.The control was active and the user moves the focus to another control using the keyboard (e.g. the control was active and the user clicks anywhere outside it.Let's start by defining how the control reaches each state: We require our control to be usable with a mouse as well as with a keyboard, and comprehensible to a screen reader, just like any native control. Therefore it should have the same behaviors and semantics as the native HTML element. In terms of behavior, we are recreating a native HTML element. This screenshot shows the three main states of our control: the normal state (on the left) the active state (in the middle) and the open state (on the right). In our example, we will rebuild the element. To do this, it's good to start with an existing control whose states and behavior are well known, so that you can mimic those as much as possible. In particular, it's important to clearly define all the states of your control. Express Tutorial Part 7: Deploying to productionīefore building a custom control, you should start by figuring out exactly what you want.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: 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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