html页面长截图或生成pdf

html页面需要生成长截图或者PDF，用html2canvas

import html2canvas from 'html2canvas'
// import jsPDF from 'jspdf'

shotPic() {
   
      const targetDom = document.querySelector('.target-div')
      // 此处是实现滚动元素长截图的关键 start
      const copyDom = targetDom