js实现html网页直接转pdf

来源：互联网发布：数据防泄漏国内厂家编辑：程序博客网时间：2024/05/07 17:17

<script type="text/javascript" src="./js/html2canvas.js"></script><script type="text/javascript" src="./js/jsPdf.debug.js"></script><script type="text/javascript">      var downPdf = document.getElementById("renderPdf");      downPdf.onclick = function() {          html2canvas(document.body, {              onrendered:function(canvas) {                  var contentWidth = canvas.width;                  var contentHeight = canvas.height;                  //一页pdf显示html页面生成的canvas高度;                  var pageHeight = contentWidth / 592.28 * 841.89;                  //未生成pdf的html页面高度                  var leftHeight = contentHeight;                  //pdf页面偏移                  var position = 0;                  //a4纸的尺寸[595.28,841.89]，html页面生成的canvas在pdf中图片的宽高                  var imgWidth = 595.28;                  var imgHeight = 592.28/contentWidth * contentHeight;                  var pageData = canvas.toDataURL('image/jpeg', 1.0);                  var pdf = new jsPDF('', 'pt', 'a4');                  //有两个高度需要区分，一个是html页面的实际高度，和生成pdf的页面高度(841.89)                  //当内容未超过pdf一页显示的范围，无需分页                  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;                          //避免添加空白页                          if(leftHeight > 0) {                              pdf.addPage();                          }                      }                  }                  pdf.save('content.pdf');              }          })      }    </script>

需要引入html2canvas.js和jsPdf.debug.js，触发点击事件，直接把该页面html转pdf

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