Html to Base64 print

by Rapha Souza

HTML

<script src="https://code.jquery.com/jquery-3.4.1.slim.js"></script>
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.css">
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.16.0/umd/popper.js"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/js/bootstrap.js"></script>
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.css">
<!DOCTYPE html>
<html lang="en">

  <head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>encode pdf file to base64 data url in html2pdf.js</title>
  </head>

  <body>
    <div id="root">

      <div class="A4 col-md-12">

        <div class="row"><br>
        </div>
        <div class="row"><br>
        </div>
        <div class="row"><br>
        </div>
        <div class="row"><br>
        </div>
        <div class="row"><br>
        </div>
        <div class="row"><br>
        </div>
        <div class="row"><br>
        </div>
        <div class="row"><br>
        </div>
        <div class="row"><br>
        </div>
        <div class="row"><br>
        </div>
        <div class="row"><br>
        </div>
        <div class="row"><br>
        </div>
        <div class="row"><br>
        </div>
        <div class="row"><br>
        </div>
        <div class="row"><br>
        </div>
        <div class="row"><br>
        </div>
        <div class="text-center" style="">
          <h3>RELATÓRIO DE CONFORMIDADE FISCAL</h3>
          <h3>ETAPA 0139 - CSC | DISPONIBILIDADE DA REDE COM ÁREA 15</h3>
          <h3>RT978/23</h3>
        </div>
      </div>


      <a href="https://google.com">Google</a>
    </div>

    <div>
      <button typé="button" class="btn btn-info" onclick="chama()">
        Cnoksd
      </button>
    </div>
  </body>
  <script...

CSS

.row {
  background: #f8f9fa;
  margin-top: 20px;
}

.col {
  border: solid 1px #6c757d;
  padding: 10px;
}

JavaScript

function chama() {

  console.log("chama")

  html2pdf().from(document.getElementById('root')).outputPdf().then((ur1) => {
   //console.log(btoa(ur1))
    let base64 = btoa(ur1)
    console.log(base64)
    const blob = base64ToBlob(base64);
    console.log(blob)
    //const urlFrame = URL.createObjectURL(blob);
    const urlFrame = URL.createObjectURL(blob);
    //console.log(urlFrame)
    const pdfwindow = window.open("");
    console.log("pdfwindow" + pdfwindow)
    pdfwindow.document.write("<iframe width='100%' height='100%' src='" + urlFrame + "'></iframe>")

console.log(pdfwindow)


  })


}

function base64ToBlob(base64, type) {

  console.log("base64ToBlob");

  const binStr = atob(base64);
  const len = binStr.length;
  const arr = new Uint8Array(len);

  for (let i = 0; i < len; i++) {
    arr[i] = binStr.charCodeAt(i);
  }
  binStr.charCodeAt(i);
  return new Blob([arr], {
    type: type
  });
}