利用 iframe 标签打印元素

<img src="cfg-resource/coral40/views/component/quickmarkprint/quickmark.jpg" id="printImg" width="100%" heigth="100%"/>

    var printImg=document.getElementById("printImg");
    var iframe = document.createElement('iframe');
    iframe.setAttribute('style', 'display:none');
    document.body.appendChild(iframe);
    var doc = iframe.contentWindow.document;
    doc.write(printImg.outerHTML);
    doc.close()
    iframe.contentWindow.focus();
    iframe.contentWindow.print();
    iframe.remove();