<!--index.wxml-->

<view class="container">

<canvas canvas-id="myCanvas_A"  width="375px" height="288px" style="width:375px;height:288px;border:1px solid coral;"/>

</view>

const ctx_A = wx.createCanvasContext('myCanvas_A');

wx.getImageInfo({

src: 'https://img.alicdn.com/imgextra/i4/759415648/O1CN01hlt9yS1rapSLhYmL1_!!759415648.jpg',

success: function (res) {

console.log(res);

ctx_A.drawImage(res.path, 0, 0, res.width,res.height);

}

})

getImageInfo回调cavas不能绘图