各位高级开发人员和程序员好,
我正在使用一个脚本,这是与jspdf集成,基本上脚本应该转换我的网站内容为pdf,这个脚本有两种类型的概念。
可选择的和画布,画布用于复杂的网页,如表格,空格,背景图像。
它工作成功,但我的PDF不能清除,只是停留在中间
这是javascript代码
//Download as a canvas if contains complex data
$('.wppdf-download-canvas').click(function() {
var pdfname = $(this).attr('name');
var htmlSource = $(this).siblings('.wppdf');
var canvasToImage = function(canvas){
var img = new Image();
var dataURL = canvas.toDataURL('image/png');
img.src = dataURL;
return img;
};
var canvasShiftImage = function(oldCanvas,shiftAmt){
shiftAmt = parseInt(shiftAmt, 10) || 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 jsPDF2('p','pt'),
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', 15, 15, pdfPageWidth - (pdfPageWidth * .0 ), 0, null, 'NONE');
totalPdfHeight += (pdfPageHeight * pdfScaleFactor * htmlScaleFactor);
safetyNet++;
}
pdf.save(pdfname);
};
我尝试使用var pdf = new jsPDF('p','pt','a4');
因为我想让它更大,但是当我尝试下载我的页面时没有任何反应。
任何建议我在网上做了一些研究,得到了这个
pdf。addmage (newCanvas, 'png', - 120,10,700,580);
这就解决了问题