HTML
HTML @htmltutorial

Emoji Characters

Emojis are also characters from the UTF-8 alphabet:

  • 😄 is 128516
  • 😍 is 128525
  • 💗 is 128151

Code Snippet (PHP/HTML/javascript/CSS)
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
</head>
<body>

<h1>My First Emoji</h1>

<p>&#128512;</p>

</body>
</html>

Output

HTML
HTML @htmltutorial

UTF-8 Characters

Many UTF-8 characters cannot be typed on a keyboard, but they can always be displayed using numbers (called entity numbers):

  • A is 65
  • B is 66
  • C is 67

Code Snippet (PHP/HTML/javascript/CSS)
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
</head>
<body>

<p>I will display A B C</p>
<p>I will display &#65; &#66; &#67;</p>

</body>
</html>

Output

HTML
HTML @htmltutorial

What are Emojis?

Emojis look like images, or icons, but they are not.

They are letters (characters) from the UTF-8 (Unicode) character set.

UTF-8 covers almost all of the characters and symbols in the world.


The HTML charset Attribute

To display an HTML page correctly, a web browser must know the character set used in the page.

This is specified in the <meta> tag:

Code Snippet (PHP/HTML/javascript/CSS)
<meta charset="UTF-8">

Output

HTML
HTML @htmltutorial

What is Multimedia?

Multimedia comes in many different formats. It can be almost anything you can hear or see, like images, music, sound, videos, records, films, animations, and more.

Web pages often contain multimedia elements of different types and formats.

Browser Support

The first web browsers had support for text only, limited to a single font in a single color.

Later came browsers with support for colors, fonts, images, and multimedia!

Multimedia Formats

Multimedia elements (like audio or video) are stored in media files.

The most common way to discover the type of a file, is to look at the file extension.

Multimedia files have formats and different extensions like: .wav, .mp3, .mp4, .mpg, .wmv, and .avi.

HTML
HTML @htmltutorial

Differences Between SVG and Canvas

SVG is a language for describing 2D graphics in XML.

Canvas draws 2D graphics, on the fly (with a JavaScript).

SVG is XML based, which means that every element is available within the SVG DOM. You can attach JavaScript event handlers for an element.

In SVG, each drawn shape is remembered as an object. If attributes of an SVG object are changed, the browser can automatically re-render the shape.

Canvas is rendered pixel by pixel. In canvas, once the graphic is drawn, it is forgotten by the browser. If its position should be changed, the entire scene needs to be redrawn, including any objects that might have been covered by the graphic.

HTML
HTML @htmltutorial

Browser Support

The numbers in the table specify the first browser version that fully supports the element.

Code Snippet (PHP/HTML/javascript/CSS)
<!DOCTYPE html>
<html>
<body>

<svg width="100" height="100">
  <circle cx="50" cy="50" r="40" stroke="green" stroke-width="4" fill="yellow" />
</svg>

</body>
</html>

Output

HTML
HTML @htmltutorial

The HTML Element

The HTML element is a container for SVG graphics.

SVG has several methods for drawing paths, boxes, circles, text, and graphic images.

HTML
HTML @htmltutorial

What is SVG?

SVG stands for Scalable Vector Graphics
SVG is used to define graphics for the Web
SVG is a W3C recommendation

HTML
HTML @htmltutorial

A canvas is a rectangular area on an HTML page. By default, a canvas has no border and no content.

The markup looks like this:

Code Snippet (PHP/HTML/javascript/CSS)
<canvas id="myCanvas" width="200" height="100"></canvas>

Output

HTML
HTML @htmltutorial

The Submit Button

The defines a button for submitting the form data to a form-handler.

The form-handler is typically a file on the server with a script for processing input data.

The form-handler is specified in the form's action attribute.

Code Snippet (PHP/HTML/javascript/CSS)
<form action="/action_page.php">
  <label for="fname">First name:</label><br>
  <input type="text" id="fname" name="fname" value="John"><br>
  <label for="lname">Last name:</label><br>
  <input type="text" id="lname" name="lname" value="Doe"><br><br>
  <input type="submit" value="Submit">
</form>

Output