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Attributes

All HTML elements can have attributes
Attributes provide additional information about an element
Attributes are always specified in the start tag
Attributes usually come in name/value pairs like: name="value"


The id Attribute

The HTML id attribute is used to specify a unique id for an HTML element (the value must be unique within the HTML document).
Using The id Attribute
The id attribute is used by CSS or JavaScript to perform certain tasks for the element with the specific id value.
In CSS, to select an element with a specific id, write a hash (#) character, followed by the id of the element: 0880351169


HTML Iframes

An HTML iframe is used to display a web page within a web page.


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What is a Web Worker?

A web worker is a JavaScript running in the background, without affecting the performance of the page.
When executing scripts in an HTML page, the page becomes unresponsive until the script is finished.
A web worker is a JavaScript that runs in the background, independently of other scripts, without affecting the performance of the page. You can continue to do whatever you want: clicking, selecting things, etc., while the web worker runs in the background.


Embeds

Create responsive video or slideshow embeds based on the width of the parent by creating an intrinsic ratio that scales on any device. 0880351169


Lifting State Up

Often, several components need to reflect the same changing data. We recommend lifting the shared state up to their closest common ancestor. Let’s see how this works in action.


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Related Content

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State and Lifecycle This page introduces the concept of state and lifecycle in a React component. You can find a detailed component API reference here.
Consider the ticking clock example from one of the previous sections. In Rendering Elements, we have only learned one way to update the UI. We call ReactDOM.render() to change the rendered output:

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Text Documentation and examples for common text utilities to control alignment, wrapping, weight, and more.

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What is SVG? SVG stands for Scalable Vector Graphics
SVG is used to define graphics for the Web
SVG is a W3C recommendation
The HTML svg Element
The HTML svg element is a container for SVG graphics.
SVG has several methods for drawing paths, boxes, circles, text, and graphic images.

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Handling Events Handling events with React elements is very similar to handling events on DOM elements. There are some syntax differences:
React events are named using camelCase, rather than lowercase.
With JSX you pass a function as the event handler, rather than a string.

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Flex Quickly manage the layout, alignment, and sizing of grid columns, navigation, components, and more with a full suite of responsive flexbox utilities. For more complex implementations, custom CSS may be necessary.

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What is HTML? HTML stands for Hyper Text Markup Language
HTML describes the structure of a Web page
HTML consists of a series of elements
HTML elements tell the browser how to display the content
HTML elements are represented by tags
HTML tags label pieces of content such as "heading", "paragraph", "table", and so on
Browsers do not display the HTML tags, but use them to render the content of the page