局部打印插件 jquery.PrintArea.js

(function ($) {

    var printAreaCount = 0;

    $.fn.printArea = function () {

        var ele = $(this);

        var idPrefix = "printArea_";

        removePrintArea(idPrefix + printAreaCount);

        printAreaCount++;

        var iframeId = idPrefix + printAreaCount;

        var iframeStyle = ‘position:absolute;width:0px;height:0px;left:-500px;top:-500px;‘;

        iframe = document.createElement(‘IFRAME‘);

        $(iframe).attr({

            style: iframeStyle,

            id: iframeId

        });

        document.body.appendChild(iframe);

        var doc = iframe.contentWindow.document;

        $(document).find("link").filter(function () {

            return $(this).attr("rel").toLowerCase() == "stylesheet";

        }).each(

                function () {

                    doc.write(‘<link type="text/css" rel="stylesheet" href="‘

                            + $(this).attr("href") + ‘" >‘);

                });

        doc.write(‘<div class="‘ + $(ele).attr("class") + ‘">‘ + $(ele).html()

                + ‘</div>‘);

        doc.close();

        var frameWindow = iframe.contentWindow;

        frameWindow.close();

        frameWindow.focus();

        frameWindow.print();

    }

    var removePrintArea = function (id) {

        $("iframe#" + id).remove();

    };

})(jQuery);

<input type="button" id="btnPrint" value="打印"/>

<div id="printContent">要打印的内容区域<div>

<script type="text/javascript">

$(function(){

        $("btnPrint").click(function(){ $("printContent").printArea(); });

});

</script>

原文：http://www.cnblogs.com/beijia/archive/2012/07/09/printArea.html