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HomeWeb Front-endHTML TutorialWhat is the difference between SVG and HTML5 Canvas?

SVG和HTML5 Canvas之间有什么区别?

HTML element is a container for SVG graphics. SVG stands for Scalable Vector Graphics. SVG is useful for defining graphics such as boxes, circles, text, etc. SVG, which stands for Scalable Vector Graphics, is a language for describing 2D graphics and graphics applications in XML, which is then rendered by an SVG viewer. Most web browsers can display SVG just like PNG, GIF, and JPG.

HTML element is used to draw graphics via JavaScript. The element is a graphic container.

SVG

HTML Canvas

SVG has better scalability. So you can print with high quality at any resolution

Canvas is less scalable. Therefore, it is not suitable for printing at higher resolution

SVG for smaller numbers of objects or larger surfaces.

Canvas provides better performance on smaller surfaces or larger numbers of objects.

SVG can be modified through scripts and CSS

Canvas can only be modified through scripts

SVG is vector based and consists of shapes.

The canvas is based on raster and consists of pixels.

Example

You can try running the following code to add Scalable Vector Graphics (SVG) to a web page-

<!DOCTYPE html>
<html>
   <head>
      <style>
         #svgelem {
            position: relative;
            left: 50%;
            -webkit-transform: translateX(-20%);
            -ms-transform: translateX(-20%);
            transform: translateX(-20%);
         }
      </style>
      <title>HTML5 SVG</title>
   </head>
   <body>
      <h2 id="HTML-SVG-Circle">HTML5 SVG Circle</h2>
      <svg id = "svgelem" height = "200" xmlns = "http://www.w3.org/2000/svg">
         <circle id = "bluecircle" cx = "60" cy="60" r = "50" fill = "blue" />
      </svg>
   </body>
</html>

Example

You can try running the following code to learn how to draw a rectangle using HTML5 Canvas:

<!DOCTYPE html>
<html>
   <head>
      <title>HTML5 Canvas Tag</title>
   </head>
   <body>
      <canvas id = "newCanvas" width = "200" height = "100" style = "border:1px solid #000000;"></canvas>
      <script>
         var c = document.getElementById(&#39;newCanvas&#39;);
         var ctx = c.getContext(&#39;2d&#39;);
         ctx.fillStyle = &#39;#7cce2b&#39;;
         ctx.fillRect(0,0,300,100);
      </script>
   </body>
</html>

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