https://restpack.io/api/html2pdf/v7/convert导出pdf

对于导出PDF的问题，可以使用html2canvas和jsPDF库来实现。首先，需要安装html2canvas和jsPDF库。然后，可以使用以下代码来导出PDF：

import html2canvas from 'html2canvas';
import jsPDF from 'jspdf';

function exportPDF() {
  let exportPage = document.getElementById('myecharts'); // 需要导出的页面元素
  let pdfWidth = exportPage.clientWidth; // 导出PDF的宽度
  let pdfHeight = exportPage.clientHeight; // 导出PDF的高度

  let canvas = document.createElement('canvas');
  let context = canvas.getContext('2d');
  let scale = 3; // 将画布放大三倍，提高清晰度

  canvas.width = pdfWidth * scale;
  canvas.height = pdfHeight * scale;

  let option = {
    scale: 1,
    width: pdfWidth,
    height: pdfHeight,
    canvas: canvas,
    useCORS: true, // 允许跨域请求外部链接图片
  };

  context.scale(scale, scale);

  html2canvas(exportPage, option).then(canvas => {
    let pdf = new jsPDF('', 'pt', \[canvas.width / scale, canvas.height / scale\]); // 自定义宽高
    let pageDataBase64 = canvas.toDataURL('image/jpeg', 1.0);
    pdf.addImage(pageDataBase64, 'JPEG', 0, 0, canvas.width / scale, canvas.height / scale);
    pdf.save('图表.pdf');
  });
}

这段代码会将指定的页面元素（id为'myecharts'）导出为PDF文件，并保存为'图表.pdf'。请确保已经安装了html2canvas和jsPDF库，并将代码中的页面元素id替换为实际需要导出的元素id。

希望对你有帮助！
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