在移动设备上使用 jsPDF 下载 [英] Download using jsPDF on a mobile devices

问题描述

我有一个包含使用 jsPDF 的下载按钮的页面.在台式机上，它会按原样下载页面.但是，pdf.save() 在我的平板电脑或手机上不起作用.

I have a page that includes a download button using jsPDF. On desktop machines it downloads the page as it should. However, pdf.save() does not work on my tablet or phone.

我尝试为移动设备添加一个特殊情况，以便在新窗口中打开 PDF，因为移动设备下载的内容与台式机不同，其想法是一旦 PDF 在新窗口中打开用户可以选择手动保存.

I tried to add a special case for mobile devices to open the PDF in a new window, since mobile devices don't download things the same as desktops, with the idea being that once the PDF is open in a new window the user can choose to save it manually.

var pdf = new jsPDF('p', 'pt', 'letter');
var specialElementHandlers = {
    '#editor': function (element, renderer) {
        return true;
    }
};

html2canvas($("#pdf-area"), {
    onrendered: function (canvas) {
        $("#pdf-canvas").append(canvas);
        $("#pdf-canvas canvas").css("padding", "20px");
    }
});

var options = {
    pagesplit: true
};

function download(doctitle) {
    pdf.addHTML($("#pdf-area")[0], options, function () {
        if (/Android|webOS|iPhone|iPad|iPod|BlackBerry|IEMobile|Opera Mini/i.test(navigator.userAgent)) {
            pdf.output('dataurlnewwindow');           
        } else {
            pdf.save(doctitle);
        }        
    });
}

但下载功能在我的平板电脑/手机上仍然没有任何作用.我用这个测试它以确保 pdf.output() 函数正常工作:

But the download function still does nothing on my tablet/phone. I tested it with this to make sure the pdf.output() function was working:

    pdf.addHTML($("#pdf-area")[0], options, function () {
        pdf.output('dataurlnewwindow');                
    });

它仍然可以在桌面上运行，但在移动设备上没有任何作用.

and it does still work on desktop, but does nothing on mobile.

推荐答案

适用于桌面和移动设备的最简单方法是使用:

The easiest way which works on both Desktop and Mobile is to use:

window.open(doc.output(bloburl"), _blank");

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