页面转pdf所需js(html2canvas.js和jsPdf.debug.js)下载(1)

时间:2022-04-04 05:07:01
【文件属性】:

文件名称:页面转pdf所需js(html2canvas.js和jsPdf.debug.js)下载(1)

文件大小:331KB

文件格式:JS

更新时间:2022-04-04 05:07:01

jsPdf. html2c 转PDF

页面转pdf所需js(html2canvas.js和jsPdf.debug.js) [removed][removed] [removed][removed] [removed] 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'); } }) } [removed]


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