vue 结合html2canvas + jspdf 实现将页面内容生成 PDF

vue 结合html2canvas + jspdf 实现将页面内容生成 PDF
import html2Canvas from 'html2canvas'
import JsPDF from 'jspdf'
setTimeout(() => {
         html2Canvas(document.querySelector('#pdfDom'), {
            allowTaint: true,
            useCORS: true
        }).then(async function (canvas) {
            let contentWidth = canvas.width
            let contentHeight = canvas.height
            let pageHeight = contentWidth / 592.28 * 841.89
            let leftHeight = contentHeight
            let position = 0
            let imgWidth = 595.28
            let imgHeight = 592.28 / contentWidth * contentHeight
            let pageData = canvas.toDataURL('image/jpeg', 1.0)
            let PDF = new JsPDF('', 'pt', 'a4')
            if (leftHeight < pageHeight) {
              PDF.addImage(pageData, 'JPEG', 0, 0, imgWidth, imgHeight)
            } else {
              while (leftHeight > 0) {
                PDF.addImage(pageData, 'JPEG', 0, position, imgWidth, imgHeight)
                leftHeight -= pageHeight
                position -= 841.89
                if (leftHeight > 0) {
                  PDF.addPage()
                }
              }
            }
            //PDF.save(1 + '.pdf')
            var datauri  = PDF.output('datauristring')//获取base64Pdf
            var pdfFile = datauri.split(";")[2];
            let params = {fileBase64:pdfFile};
            let res = await postAction("/mt/activityDataAnalysis/uploadBase64",params);
          }
        )
      }, 5000);