HTML has several semantic elements that define the different parts of a web page: <header>- Defines a header for a document or a section <nav>- Defines a set of navigation links <section>- Defines a section in a document <article>- Defines an independent, self-contained content <aside>-...
First, you’re forcing the browser to drive through its full page cycle, and even call the server; and second, you need a physical document that represents the URL. AJAX solves part of the problem by allowing you to request just parts of a page, reducing the number of full-page ...
10.2 Adding Components to a Page Using HTML Tag Library TagsThe tags defined by the JavaServer Faces standard HTML tag library represent HTML form components and other basic HTML elements. These components display data or accept data from the user. This data is collected as part of a form ...
For example, the commandLink component in the following section of a page is not rendered if the cart contains no items:<h:commandLink id="check" ... rendered="#{cart.numberOfItems > 0}"> <h:outputText value="#{bundle.CartCheck}"/> </h:commandLink>...
ARIA uses a set of roles, states and properties to expose a Web page to the accessibility APIs. These roles, states and properties are assigned on a page’s elements, which are exposed to the ATs. Most current AT tools—including JAWS, NVDA and VoiceOver—support ARIA. Let’s take a ...
Next, let’s see how to do the same thing with a modal dialog with the.showModal()method, which prevents users from interacting with the rest of the page when the dialog is open: When using this method, we can’t interact with other parts of the page...
We’re going to see here how to get the values sent back by the accelerometer (of the emulator or the real device) in a very simple way.Open the “index.html” page and change its default body by this one:We will simply use 3 <div> tags to display the current X, Y & Z values...
Drag-and-drop page buildersare a great example of WYSIWYG editors. WYSIWYG HTML editorsare great forbeginner codersbecause they display what the website will look like on the front end to your visitors. This type of editor often has a drag-and-drop interface, so you can add, delete, and...
An introduction to elements and attributes A Web Page, Step by Step Step 2: Give the Document Structure Step 5: Change the Look with a Style Sheet Troubleshooting broken web pages Part I provided a general overview of the web design environment. Now that we’ve covered the big concepts, it...
Click CTRL + U in an HTML page, or right-click on the page and select "View Page Source". This will open a new tab containing the HTML source code of the page.Inspect an HTML Element:Right-click on an element (or a blank area), and choose "Inspect" to see what elements are ...