Can I use html() multiple times in a PDF

I want to export a PDF in a function. At the same time, the content inside is generated by using .html() many times. If only once .html() there is no problem at all. But I found that I used it twice, and the content of the second time would not be generated in PDF. So I want to know,.html() Only once? this is code

async getPdfByJSPDF(){
      // console.log(this.$refs.ProjectDesignReport.changeHeightToA4(),"这里在执行子组件的改变高度函数")
      const { width:A4W, height: A4H } = {width:960,height:1362};
      const { unit, orientation, format } = {unit:"px", orientation:"p", format:[A4H,A4W]} // optionPDF(A4W,A4H);
      // console.log(unit, orientation, format,"unit, orientation, format")

      let thePDF = new JsPDF({ orientation, unit, format });
      thePDF = addSelfFont(thePDF, MyFont, "Alibaba-PuHuiTi-Regular-normal" ); // 增加字体

      const pdfBody = document.querySelector("#export");

      await thePDF.html(pdfBody,{x:0,y:0});
      await thePDF.html(pdfBody,{x:0,y:1362*3});

      const num = thePDF.internal.getNumberOfPages(); // 可以获得页数
      for(let i = 0; i < num; i+=1) {
        thePDF.setPage(i); 
        thePDF.setTextColor("red");
        thePDF.setFontSize(32);
        thePDF.text(`${thePDF.internal.getCurrentPageInfo().pageNumber  }/${  num}`,40,40, );
      }
      thePDF.save();
    }

By the way, we’ve dealt with this problem in other ways, so now we’re just a little curious.

At the same time, if I continue to use html() in html() callback, I can write the content into PDF, but in the way of covering the previous one.

version 2.3.0

[ahocevar]

Using html2canvas directly has the disadvantage that text will be converted to an image, whereas using doc.html() preserves text as text. And html-to-image is not an option because of the Safari limitations.

[joanc-naia]

Yeah, I thought I could use .addPage() after .html() and call .html() again to insert anoter DOM element into a new page. Turns out I can’t. Is there a differrent way to go about doing this?