js 实现打印功能

<button onclick="doPrint();">print</button>
<iframe style="display:none"  id="printIframe" frameBorder=0 scrolling=no width="100%"  src="./test.pdf"></iframe>



function doPrint(){
        $("#printIframe")[0].contentWindow.print();
    }

<script src="./js/PDFObject-new.js"></script>
<script type="text/javascript">

    window.onload = function (){
        var myPDF = new PDFObject({ url: "./test.pdf" }).embed();
      };
</script>