let canvasId=`canvas-qr` return new Promise((resolve, reject) => { Taro.canvasToTempFilePath({ canvasId:canvasId, success(res3) { let tempFilePath = res3.tempFilePath; ctx.drawImage(tempFilePath,0,0,100,100); }, }); }); # 错误信息 VM3012 WAService.js:2 Unhandled promise rejection 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)'     at CanvasRenderingContext2D.Nd.e.drawImage (VM3012 WAService.js:2)     at Index._callee2$ (createImg.js?t=wechat&s=1632809999604&v=5bac26123f77e3efc63b8794d8360e6c:176)     at m (vendors.js?t=wechat&s=1632809999604&v=6439fe6ae0559aecf05f9424f15122c6:1)     at Generator.t._invoke (vendors.js?t=wechat&s=1632809999604&v=6439fe6ae0559aecf05f9424f15122c6:1)     at Generator.e.<computed> [as next] (vendors.js?t=wechat&s=1632809999604&v=6439fe6ae0559aecf05f9424f15122c6:1)     at step (createImg.js?t=wechat&s=1632809999604&v=5bac26123f77e3efc63b8794d8360e6c:26)     at createImg.js?t=wechat&s=1632809999604&v=5bac26123f77e3efc63b8794d8360e6c:26     at VM3012 WAService.js:2     at n (VM3012 WAService.js:2)(env: macOS,mp,1.05.2105170; lib: 2.19.6)

2021年04月07日14:58:09

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