html2canvas 超级实用，用来画图太方便了~

html2canvas 用来画图太方便了~

html部分

js部分

html2canvas(document.querySelector("#capture")).then(canvas => {

// 下载

let base64Img = canvas.toDataURL('image/png')

let a = document.createElement('a')

a.href = base64Img

a.download = this.qrCodeName

a.click()

//销毁元素

a.remove()

});