小程序canvas中drawImage自適應寬度鋪滿屏幕

在微信小程序建立畫布而且自適應屏幕寬度鋪滿屏幕css wxml先建立一個畫布canvas <view class='page'> <button bindtap='click' type='primary' size='mini'>打開</button> <canvas class='canvas' canvas-id='myCanvas' disable-scroll='true' ></c

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