从iframe创建PDF文件

Joh*_*ohn 8 javascript pdf jspdf

我想保存包含IFrame内容的PDF文件.我正在使用jsPDF.当我点击调用该函数的按钮时,脚本会创建一个空的PDF页面.

框架的内容如下:https://jsfiddle.net/ss6780qn/

我使用以下脚本:

<script src="../jspdf/plugins/standard_fonts_metrics.js"></script>
<script type="text/javascript">
function toPDF(){       
        var pdf = new jsPDF('p', 'in', 'letter');

    // source can be HTML-formatted string, or a reference
    // to an actual DOM element from which the text will be scraped.
    source = $('#frame')[0]

    // we support special element handlers. Register them with jQuery-style 
    // ID selector for either ID or node name. ("#iAmID", "div", "span" etc.)
    // There is no support for any other type of selectors 
    // (class, of compound) at this time.
    specialElementHandlers = {
        // element with id of "bypass" - jQuery style selector
        'div': function(element, renderer){
            // true = "handled elsewhere, bypass text extraction"
            return true
        }
    }

    // all coords and widths are in jsPDF instance's declared units
    // 'inches' in this case
    pdf.fromHTML(
        source // HTML string or DOM elem ref.
        , 0.5 // x coord
        , 0.5 // y coord
        , {
            'width':7.5 // max width of content on PDF
             ,'elementHandlers': specialElementHandlers
        }
    )

    pdf.save('Test.pdf');
}
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有人知道什么是错的,我怎么能解决这个问题?

And*_*yen 3

要从 iframe 打印 html,您需要从 iframe 获取内容。从 iframe 获取内容的源代码(我从中得到

function getFrameContents() {
    var iFrame = document.getElementById('frame');
    var iFrameBody;
    if (iFrame.contentDocument) { // FF
        iFrameBody = iFrame.contentDocument.getElementsByTagName('body')[0];
    } else if (iFrame.contentWindow) { // IE
        iFrameBody = iFrame.contentWindow.document.getElementsByTagName('body')[0];
    }
    //alert(iFrameBody.innerHTML);
    return iFrameBody.innerHTML
}
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所以你替换:

source = $('#frame')[0]
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source = getFrameContents();
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或者用 jQuery 简单地实现:

source = $("#frame").contents().find('body')[0];
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然而,CORS(跨源资源共享)仍然存在问题。要解决这个问题,您可以创建 Web 服务器并将 html 代码和 iframe src 放在那里,看看它是如何工作的。