this.init.bind(this)这种写法有没有api?
wx.createSelectorQuery()
.select('#canvas')
.fields({
node: true,
size: true,
})
.exec(this.init.bind(this))
wx.createSelectorQuery()
.select('#canvas')
.fields({
node: true,
size: true,
})
.exec(this.init.bind(this))