//将特定部分转成pdf并下载

    getPdf () {
        var title = this.title;
        html2canvas(document.querySelector('#pdfDom'), {
            allowTaint: true
        }).then(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()
                    }
                }
            }
             // var datauri = PDF.output('dataurlstring');
             // console.log(datauri)
            // PDF.save(title + '.pdf')
        })
    },
    
    

save方法可以下载文件 但是文件过多我想整理成zip再下载
现在我想知道文件存储到哪里了 能不能拿到文件地址