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Course: HTML Basic
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HTML Basic

HTML Introduction

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HTML Editors

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HTML Elements

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HTML Attributes

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HTML Headings

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HTML Paragraphs

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HTML Styles

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HTML Formatting

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HTML Quotation

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HTML Comments

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HTML Colors

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HTML Favicon

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HTML Page Title

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HTML Block and Inline

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HTML Iframes

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HTML Java Script

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HTML File Paths

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HTML - The Head Element

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HTML Style Guide

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HTML Entities

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HTML Symbols

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Text lesson

HTML SVG

SVG (Scalable Vector Graphics)

SVG graphics, defined in XML, maintain scalability without loss of quality when zoomed or resized, and can be directly embedded in HTML pages.

IMG_4261

 

 

 

 

 

 

 

 

 

All major browsers support SVG.

What is SVG?

·  SVG stands for Scalable Vector Graphics.

·  It is used to define vector-based graphics for the web.

·  SVG defines graphics in XML format.

·  Every element and attribute in SVG files can be animated.

·  SVG is a W3C recommendation.

·  SVG integrates with other standards like CSS, DOM, XSL, and JavaScript.

The <svg> Element

The HTML <svg> element serves as a container for SVG graphics.

SVG provides various methods for drawing paths, rectangles, circles, polygons, text, and more.

SVG Circle

IMG_4262

Example

<!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>

SVG Rectangle

IMG_4263

Example

<svg width=”400″ height=”120″>
  <rect x=”10″ y=”10″ width=”200″ height=”100″ stroke=”red” stroke-width=”6″ fill=”blue” />
</svg>

SVG Rectangle with Opacity and Rounded Corners

IMG_4264

Example

<svg width=”400″ height=”180″>
  <rect x=”50″ y=”20″ rx=”20″ ry=”20″ width=”150″ height=”150″
  style=”fill:red;stroke:black;stroke-width:5;opacity:0.5″ /
>

</svg>

SVG Star

IMG_4265

Example

<svg width=”300″ height=”200″>
  <polygon points=”100,10 40,198 190,78 10,78 160,198″
  style=”fill:lime;stroke:purple;stroke-width:5;fill-rule:evenodd;” /
>

</svg>

SVG Gradient Ellipse and Text

IMG_4266

Example

<svg height=”130″ width=”500″>
  <defs>
    <linearGradient id=”grad1″>
      <stop offset=”0%” stop-color=”yellow” />
      <stop offset=”100%” stop-color=”red” />
    </linearGradient>
  </defs>
  <ellipse cx=”100″ cy=”70″ rx=”85″ ry=”55″ fill=”url(#grad1)” />
  <text fill=”#ffffff” font-size=”45″ font-family=”Verdana” x=”50″ y=”86″>SVG</text>
  Sorry, your browser does not support inline SVG.
</svg>

Differences Between SVG and Canvas

SVG is a language for describing 2D graphics using XML, whereas Canvas draws 2D graphics on the fly using JavaScript.

Since SVG is XML-based, every element is accessible within the SVG DOM, allowing you to attach JavaScript event handlers to SVG graphics.

In SVG, each drawn shape is retained as an object. When the attributes of an SVG object are modified, the browser can automatically re-render the shape.

Canvas, on the other hand, renders graphics pixel by pixel. Once a graphic is drawn on a canvas, it is forgotten by the browser. To change its position, the entire scene, including any objects that were covered by the graphic, must be redrawn.

Comparison of SVG and Canvas

The table below highlights key differences between Canvas and SVG:

SVG

Canvas

·  Resolution independent

·  Supports event handlers

·  Excellent text rendering capabilities

·  Slow rendering for complex graphics

·  Not ideal for game applications

·  Resolution dependent

·  Does not support event handlers

·  Poor text rendering capabilities

·  Allows saving the resulting image as .png or .jpg

·  Well-suited for graphic-intensive games