CanvasContext.setLineDash

解释：设置线条虚线样式的间距和长度。

方法参数

示例

图片示例

代码示例 1：基础用法 

在开发者工具中打开

<canvas canvas-id="myCanvas" class="myCanvas" />

Page({
    onLoad() {
        const canvasContext = swan.createCanvasContext('myCanvas');
        canvasContext.setLineDash([10, 20], 5);
        canvasContext.beginPath();
        canvasContext.moveTo(0,100);
        canvasContext.lineTo(400, 100);
        canvasContext.stroke();
        canvasContext.draw();
    }
});

代码示例 2 

在开发者工具中打开

<canvas canvas-id="myCanvas" class="myCanvas" />

Page({
    onLoad() {
        const canvasContext = swan.createCanvasContext('myCanvas');
        canvasContext.setLineDash([10, 20], 5);
        canvasContext.beginPath();
        canvasContext.moveTo(0,100);
        canvasContext.lineTo(400, 100);
        canvasContext.stroke();
        canvasContext.setLineDash([5, 10, 5], 5);
        canvasContext.beginPath();
        canvasContext.moveTo(0, 200);
        canvasContext.lineTo(400, 200);
        canvasContext.stroke();
        canvasContext.draw();
    }
});