Usage:
CSS control page printing areaTo use CSS to control the Print Style, you must set the style media = "print" and set the display attribute of the elements that do not need to be printed on the page to none. For example, in the demo, I set the style of the page header and footer and other elements that do not need to be printed as follows:
<Style Type="Text/CSS"Media="Print"># Header,. Top_title,# Jqprint,# Footer,# Cssprint H3{Display: None} </Style> Jquery controls the page printing areaHere I want to introduce a jquery printing plug-in printarea. js. This plug-in is easy to use to control the area specified in the print page.
The demo contains the following code:
<P> <Href = "#" id = "print_btn">Click here to print >></A> </P><DivId = "my_area">... Print the area...<Br/></Div>
You only need to add the following code to print the DIV region with ID my_area:
$(function(){ $("#print_btn").click(function(){ $("#my_area").printArea(); }); }); When you click the print button, call the printarea. js plug-in. The plug-in also provides some configurable parameters. Usage: $ (element). printarea (option ).
Parameter settings:
1. Mode: mode. It is triggered when the print button is clicked. The default mode is IFRAME. When it is set to popup, a new window page is printed.
2. poptitle: Set the title of the new window. The default value is null.
3. popclose: whether to close the window after printing is completed. The default value is false.
PS: IE browser printing page to retrieve the header and footer URL method: file-> page settings, clear the page and footer input box.
Plug-in source code:
(function($) { var counter = 0; var modes = { iframe : "iframe", popup : "popup" }; var defaults = { mode : modes.iframe, popHt : 500, popWd : 400, popX : 200, popY : 200, popTitle : '', popClose : false };
var settings = {};//global settings
$.fn.printArea = function( options ) { $.extend( settings, defaults, options );
counter++; var idPrefix = "printArea_"; $( "[id^=" + idPrefix + "]" ).remove(); var ele = getFormData( $(this) );
settings.id = idPrefix + counter;
var writeDoc; var printWindow;
switch ( settings.mode ) { case modes.iframe : var f = new Iframe(); writeDoc = f.doc; printWindow = f.contentWindow || f; break; case modes.popup : printWindow = new Popup(); writeDoc = printWindow.doc; }
writeDoc.open(); writeDoc.write( docType() + "
printWindow.focus(); printWindow.print();
if ( settings.mode == modes.popup && settings.popClose ) printWindow.close(); }
function docType() { if ( settings.mode == modes.iframe || !settings.strict ) return "";
var standard = settings.strict == false ? " Trasitional" : ""; var dtd = settings.strict == false ? "loose" : "strict";
return '<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01' + standard + '//EN" "http://www.w3.org/TR/html4/' + dtd + '.dtd">'; }
function getHead() { var head = "
function getBody( printElement ) { return '<body><div class="' + $(printElement).attr("class") + '">' + $(printElement).html() + '</div></body>'; }
function getFormData( ele ) { $("input,select,textarea", ele).each(function(){ // In cases where radio, checkboxes and select elements are selected and deselected, and the print // button is pressed between select/deselect, the print screen shows incorrectly selected elements. // To ensure that the correct inputs are selected, when eventually printed, we must inspect each dom element var type = $(this).attr("type"); if ( type == "radio" || type == "checkbox" ) { if ( $(this).is(":not(:checked)") ) this.removeAttribute("checked"); else this.setAttribute( "checked", true ); } else if ( type == "text" ) this.setAttribute( "value", $(this).val() ); else if ( type == "select-multiple" || type == "select-one" ) $(this).find( "option" ).each( function() { if ( $(this).is(":not(:selected)") ) this.removeAttribute("selected"); else this.setAttribute( "selected", true ); }); else if ( type == "textarea" ) { var v = $(this).attr( "value" ); if ($.browser.mozilla) { if (this.firstChild) this.firstChild.textContent = v; else this.textContent = v; } else this.innerHTML = v; } }); return ele; }
function Iframe() { var frameId = settings.id; var iframeStyle = 'border:0;position:absolute;width:0px;height:0px;left:0px;top:0px;'; var iframe;
try { iframe = document.createElement('iframe'); document.body.appendChild(iframe); $(iframe).attr({ style: iframeStyle, id: frameId, src: "" }); iframe.doc = null; iframe.doc = iframe.contentDocument ? iframe.contentDocument : ( iframe.contentWindow ? iframe.contentWindow.document : iframe.document); } catch( e ) { throw e + ". iframes may not be supported in this browser."; }
if ( iframe.doc == null ) throw "Cannot find document.";
return iframe; }
function Popup() { var windowAttr = "location=yes,statusbar=no,directories=no,menubar=no,titlebar=no,toolbar=no,dependent=no"; windowAttr += ",width=" + settings.popWd + ",height=" + settings.popHt; windowAttr += ",resizable=yes,screenX=" + settings.popX + ",screenY=" + settings.popY + ",personalbar=no,scrollbars=no";
var newWin = window.open( "", "_blank", windowAttr );
newWin.doc = newWin.document;
return newWin; }})(jQuery);
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