Failed to execute 'drawImage' on CanvasRendering?
Page({
data: {
shareUrl: ""
},
onLoad() {},
onReady() {
const query = wx.createSelectorQuery()
query.select('#mycanvas')
.fields({
id: true,
node: true,
size: true
}).exec(this.init.bind(this));
},
init(res) {
console.log(res, "res")
const canvas = res[0].node
const ctx = canvas.getContext('2d')
const dpr = wx.getSystemInfoSync().pixelRatio
//新接口需显示设置画布宽高；
canvas.width = res[0].width * dpr
canvas.height = res[0].height * dpr
ctx.scale(dpr, dpr);
this.setData({
canvas,
ctx
});
this.canvasDraw(); //向画布载入图片的方法
},
canvasDraw() {
let img = this.data.canvas.createImage();
img.onload = () => {
//img.complete表示图片是否加载完成，结果返回true和false;
this.data.ctx.drawImage(img, 0, 0, 300, 300);
};
img.src = '../index/wxmini.jpg'
console.log(img.complete);//false
},
})
报错： TypeError: Failed to execute 'drawImage' on 'CanvasRenderingContext2D': The provided value is not of type '(CSSImageValue or HTMLImageElement or SVGImageElement or HTMLVideoElement or HTMLCanvasElement or ImageBitmap or OffscreenCanvas)' 调试了好几个基础库都是这样的报错，目前是2.17.0,目前的图片是放本地的，不是临时生成的图片路径
