这种 of undefined 的报错都是对象中没有这个属性的原因

不建议for循环中执行异步操作。 你可以试试这样 let arr = [] this.data.times.forEach(item=>{ let promise = new Promise((reslove,reject)=>{ ..... relsove(data) }) arr.push(promise) }) Promise.all(arr).then(res=>{ ...... })

在app.json中 添加 pages/Edit/Edit 路径

        this.canvas = await this.getCanvasEl('mycanvas')         this.ctx = this.canvas.getContext('2d') let listen = this.camera.onCameraFrame((frame) => {             if (this.count < 10) console.log(frame)             this.count++             this.canvas.width = frame.width             this.canvas.height = frame.height             let data = new Uint8Array(frame.data);             let clamped = new Uint8ClampedArray(data);             for(let i =0;i<clamped.length;i+=4){                 clamped[i] = clamped[i]+100                 clamped[i+1] = clamped[i+1]+50                 clamped[i+2] = clamped[i+2]+50                 clamped[i+3] = clamped[i+3]+50             }             let imageData = this.canvas.createImageData(clamped, frame.width, frame.height);             this.ctx.putImageData(imageData, 0, 0, 0, 0, frame.width, frame.height);         })         listen.start()

button{ .......... } button-hover{ ........//点击后的样式修改 } button::after{ //修改border }