canvas绘制多种文字效果：描边，阴影，渐变色等

系统管理员 2024-03-27 18:17 11阅读 0赞

canvas可以绘制多种样式的文字效果：比如渐变，阴影，描边等效果，如下图：![c27c078be91c4e7bb92361cd265b2251.png][]

示例代码：

<!DOCTYPE html>
    <html lang="en">
        <head>
            <meta charset="UTF-8" />
            <meta name="viewport" content="width=device-width, initial-scale=1.0" />
            <title>Document</title>
        </head>
        <body>
            <div>绘制文字学习</div>
            <canvas id="myCanvas" width="600" height="800"></canvas>
            <script>
                const canvas = document.getElementById('myCanvas')
                const ctx = canvas.getContext('2d')
    
                // 绘制文字
                ctx.font = '30px Arial'
                ctx.fillStyle = 'red'
                ctx.fillText('Hello World', 10, 50)
                ctx.closePath()
    
                // 描边文字
                ctx.beginPath()
                ctx.strokeStyle = 'blue'
                ctx.lineWidth = 1
                ctx.strokeText('Hello World', 10, 100)
                ctx.closePath()
    
                // 绘制阴影文字
                ctx.beginPath()
                ctx.shadowOffsetX = 10
                ctx.shadowOffsetY = 10
                ctx.shadowBlur = 10
                ctx.shadowColor = 'rgba(0, 0, 0, 0.5)'
                ctx.fillStyle = 'green'
                ctx.fillText('Hello World', 10, 150)
                ctx.closePath()
    
                // 绘制渐变文字
                ctx.beginPath()
                var gradient = ctx.createLinearGradient(0, 0, 300, 150)
                gradient.addColorStop(0, 'black')
                gradient.addColorStop(0.5, 'white')
                gradient.addColorStop(1, 'red')
                ctx.fillStyle = gradient
                ctx.fillText('Hello World', 10, 200)
                ctx.closePath()
            </script>
        </body>
    </html>

[c27c078be91c4e7bb92361cd265b2251.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/11/6d872f2e86fe4bdb80846587bda7fa9b.png