CanvasContext.setLineDash

解釋：設置線條虛線樣式的間距和長度。

方法參數(shù)

示例

圖片示例

代碼示例 1：基礎用法 

在開發(fā)者工具中打開

<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();
    }
});

代碼示例 2 

在開發(fā)者工具中打開

<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();
    }
});