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How to draw graphics through Canvas tag

藏色散人
藏色散人Original
2018-11-30 10:37:003731browse

How to draw graphics through the Canvas tag: first create an HTML sample file; then enter "" in the body; finally set the graphics through css attributes Just style it.

How to draw graphics through Canvas tag

The operating environment of this article: Windows7 system, HTML5&&CSS3 version, Dell G3 computer.

The Canvas tag is a new element in HTML5. This tag is used for graphics drawing. HTML5 is the fifth major revision of Hypertext Markup Language (HTML), the core language of the World Wide Web and an application under Standard Universal Markup Language.

So for newbies who are learning HTML, they may not be clear about this tag element.

Below we can introduce to you the detailed explanation of the use of Canvas tag through simple examples.

canvas The sample code for drawing a simple canvas graphic (rectangle) is as follows:

<!DOCTYPE>
<html>
<meta charset="utf-8">
<head>
    <title>Canvas简单使用示例</title>
    <style type="text/css">
        #FirstCanvas{
            width: 450px;
            height: 300px;
            border: 3px solid #3262ff;
            background-color: #acffcb;
        }
    </style>
</head>
<body>
<canvas id="FirstCanvas"></canvas>
</body>
</html>

Recommended reference study: "HTML5 Tutorial"

The graphic effect is as follows:

How to draw graphics through Canvas tag

The label is just a graphics container, and we must use a script to draw graphics. In other words, this tag usually must specify an id attribute so that we can use it in the script. (This script usually refers to a JavaScript script)

It should be noted here that by default the element has no border and content, so we need to use the style attribute to add the border width and width height height, and then define the size of the canvas.

This article is about drawing simple canvas graphics through the canvas tag. It is very simple and easy to understand. I hope it will be helpful to friends in need!

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