html5 canvas 教程

作者: wyrover | 来源:发表于2017-12-14 01:24 被阅读8次

画线

image.png

<html>
    <head>
        <script>
            window.onload = function(){
                // get the canvas DOM element by its ID
                var canvas = document.getElementById("myCanvas");
                // declare a 2-d context using the getContext() method of the 
                // canvas object
                var context = canvas.getContext("2d");
                
                // set the line width to 10 pixels
                context.lineWidth = 10;
                // set the line color to blue
                context.strokeStyle = "blue";
                // position the drawing cursor
                context.moveTo(50, canvas.height - 50);
                // draw the line
                context.lineTo(canvas.width - 50, 50);
                // make the line visibile with the stroke color
                context.stroke();
            };
        </script>
    </head>
    <body>
        <canvas id="myCanvas" width="600" height="250" style="border:1px solid black;">
        </canvas>
    </body>
</html>