函数doc.save宽度jspdf

实际上，我们从每个客户的HTML文件生成管理文档。另一方面，生成的pdf将被保存到服务器上的特定文件夹，以发送给相关客户。函数doc.save宽度jspdf

我可以通过doc.save命令来备份备份路径吗？我的代码：

function createpdf() { 
var canvasToImage = function(canvas){ 
    var img = new Image(); 
    var dataURL = canvas.toDataURL('image/png'); 
    img.src = dataURL; 
    return img; 
}; 
var a4 =[595.28,2000]; 
var canvasShiftImage = function(oldCanvas,shiftAmt){ 
    shiftAmt = parseInt(shiftAmt) || 0; 
    if(!shiftAmt){ return oldCanvas; } 

    var newCanvas = document.createElement('canvas'); 
    newCanvas.height = oldCanvas.height - shiftAmt; 
    newCanvas.width = oldCanvas.width; 
    var ctx = newCanvas.getContext('2d'); 

    var img = canvasToImage(oldCanvas); 
    ctx.drawImage(img,0, shiftAmt, img.width, img.height, 0, 0, img.width, img.height); 

    return newCanvas; 
}; 


var canvasToImageSuccess = function(canvas){ 
    var pdf = new jsPDF('p','px','letter'), 
     pdfInternals = pdf.internal, 
     pdfPageSize = pdfInternals.pageSize, 
     pdfScaleFactor = pdfInternals.scaleFactor, 
     pdfPageWidth = pdfPageSize.width, 
     pdfPageHeight = pdfPageSize.height, 
     totalPdfHeight = 0, 
     htmlPageHeight = canvas.height, 
     htmlScaleFactor = canvas.width/(pdfPageWidth * pdfScaleFactor), 
     safetyNet = 0; 

    while(totalPdfHeight < htmlPageHeight && safetyNet < 15){ 
     var newCanvas = canvasShiftImage(canvas, totalPdfHeight); 
     pdf.addImage(newCanvas, 'png',0, 0, pdfPageWidth, 0, null, 'NONE'); 

     totalPdfHeight += (pdfPageHeight * pdfScaleFactor * htmlScaleFactor); 

     if(totalPdfHeight < htmlPageHeight){ 
      pdf.addPage(); 
     } 
     safetyNet++; 
    } 

    pdf.save('<?php echo $mavariable?>.pdf'); 
}; 

html2canvas($('main')[0], { 
    onrendered: function(canvas){ 
     canvasToImageSuccess(canvas); 
    } 
});

}

来源

2016-04-08 Laetitia De Rechapt

我不知道我的理解，你能澄清（也许显示你目前正在使用的代码）？ –

这个问题似乎还不清楚。什么是问题？你能分享一些代码吗？ – maggick