打印DIV内容的最佳方法是什么?
当前回答
注意:这只适用于启用jQuery的站点
这个很酷的技巧非常简单。它在谷歌Chrome浏览器中为我工作。火狐不允许你在没有插件的情况下打印PDF文件。
首先，使用(Ctrl + Shift + I) / (Cmd + Option + I)打开检查器。 在控制台中输入以下代码:
var jqchild = document.createElement('script');
jqchild.src = "https://cdnjs.cloudflare.com/ajax/libs/jQuery.print/1.5.1/jQuery.print.min.js";
document.getElementsByTagName('body')[0].appendChild(jqchild);
$("#myDivWithStyles").print(); // Replace ID with yours
它启动打印对话框。打印出来或者保存成PDF格式(chrome)。完成了!
逻辑很简单。我们正在创建一个新的脚本标记，并将其附加在关闭主体标记的前面。我们在HTML中注入了一个jQuery打印扩展。用你自己的Div标签ID更改myDivWithStyles。现在它负责准备一个可打印的虚拟窗口。
在任何网站上尝试一下。唯一需要注意的是，有时巧妙地编写CSS会导致丢失样式。但大多数时候我们得到的是内容。
其他回答
使用Jquery，简单地使用这个函数:
<script>
function printContent(el){
var restorepage = $('body').html();
var printcontent = $('#' + el).clone();
$('body').empty().html(printcontent);
window.print();
$('body').html(restorepage);
}
</script>
你的打印按钮看起来是这样的:
<button id="print" onclick="printContent('id name of your div');" >Print</button>
编辑:如果你有表单数据，你需要保留，克隆不会复制，所以你只需要抓取所有的表单数据，并在恢复后替换它如下:
<script>
function printContent(el){
var restorepage = $('body').html();
var printcontent = $('#' + el).clone();
var enteredtext = $('#text').val();
$('body').empty().html(printcontent);
window.print();
$('body').html(restorepage);
$('#text').html(enteredtext);
}
</script>
<textarea id="text"></textarea>
我认为目前提出的解决方案有以下缺点:
CSS媒体查询解决方案假设只有一个div要打印。 javascript解决方案只适用于特定的浏览器。 破坏父窗口内容并重新创建会造成混乱。
我改进了上面的解决方案。下面是我测试过的一种方法，效果非常好，有以下好处。
适用于所有浏览器，包括IE, Chrome, Safari和firefox。 不会破坏和重载父窗口。 可以在页面上打印任意数量的DIV。 使用HTML模板避免容易出错的字符串连接。
注意事项:
必须在新创建的窗口上有一个onload="window.print()"。 不要从父类调用targetwindow.close()或targetwindow.print()。 确保执行targetwindow.document.close()和target.focus() 我使用的是jquery，但你也可以使用简单的javascript做同样的技术。 你可以在这里看到它的行动https://math.tools/table/multiplication。通过单击框头上的打印按钮，可以分别打印每个表。
<script id="print-header" type="text/x-jquery-tmpl"> <html> <header> <title>Printing Para {num}</title> <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css"> <style> body { max-width: 300px; } </style> </header> <body onload="window.print()"> <h2>Printing Para {num} </h2> <h4>https://math.tools</h4> </script> <script id="print-footer" type="text/x-jquery-tmpl"> </body> </html> </script> <script> $('.printthis').click(function() { num = $(this).attr("data-id"); w = window.open(); w.document.write( $("#print-header").html().replace("{num}",num) + $("#para-" + num).html() + $("#print-footer").html() ); w.document.close(); w.focus(); //w.print(); Don't do this otherwise chrome won't work. Look at the onload on the body of the newly created window. ///w.close(); Don't do this otherwise chrome won't work }); </script> <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> <a class="btn printthis" data-id="1" href="#" title="Print Para 1"><i class="fa fa-print"></i> Print Para 1</a> <a class="btn printthis" data-id="2" href="#" title="Print Para 2"><i class="fa fa-print"></i> Print Para 2</a> <p class="para" id="para-1"> Para 1 : Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.</p> <p class="para" id="para-2"> Para 2 : Lorem 2 ipsum 2 dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.</p>
只需使用PrintJS
let printjs = document.createElement("script");
printjs.src = "https://printjs-4de6.kxcdn.com/print.min.js";
document.body.appendChild(printjs);
printjs.onload = function (){
printJS('id_of_div_you_want_to_print', 'html');
}
HTML >头
<script type="text/javascript">
function printDiv() {
var divToPrint = document.getElementById('printArea');
//Firefox was just opening a new window with same content as opener and not performing the printing dialog, so needed to make it open a new instance of the window opener
newWin= window.open(self.location.href);
//We want to format the document appropriately
newWin.document.write("\<!DOCTYPE html\>\<html lang='es'\>\<head\>\<meta charset='utf-8'\/\>\<meta name='viewport' content='width=device-width,initial-scale=1,maximum-scale=1,user-scalable=no'><meta http-equiv='X-UA-Compatible' content='IE=edge,chrome=1'\>\<meta name='HandheldFriendly' content='true'\/\>");
//HTML ELEMENTS THAT WE WANT TO HIDE FROM THE PRINTING AREA
newWin.document.write("<style type='text/css'>@media print{.dataTables_info,.dataTables_filter{height:0!important;width:0!important;margin:0!important;padding:0!important;min-height:0!important;line-height:0!important;overflow:visible!important;visibility:hidden}");
//General Styling for Printing
newWin.document.write("body {z-index:100!important;visibility:visible!important;position:relative!important;display:block!important;background-color:lightgray!important;height:297mm!important;width:211mm!important;position:relative!important;padding:0;top:0!important;left:0!important;margin:0!important;orphans:0!important;widows:0!important;overflow:visible!important;page-break-after:always}");
//Some forced styling in css rules includying page break for a div
newWin.document.write("body h1{font-size:1em; font-family:Verdana;} a.marked{color:black; text-decoration:none} .pagebreak { page-break-before: always; } ");
newWin.document.write("@page{size:A4; margin:2em; orphans:0!important;widows:0!important}}</style>\<\/head>\<body>");
newWin.document.write(divToPrint.innerHTML);
newWin.document.write("</body></html>");
newWin.focus();
newWin.print();
}
</script>
HTML >主体
<div id="printArea">
Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum.
<!-- Page break -->
<div class="pagebreak"> </div>
It is a long established fact that a reader will be distracted by the readable content of a page when looking at its layout. The point of using Lorem Ipsum is that it has a more-or-less normal distribution of letters, as opposed to using 'Content here, content here', making it look like readable English. Many desktop publishing packages and web page editors now use Lorem Ipsum as their default model text, and a search for 'lorem ipsum' will uncover many web sites still in their infancy. Various versions have evolved over the years, sometimes by accident, sometimes on purpose (injected humour and the like).
</div>
最好的方法是将div的内容提交给服务器，并打开一个新窗口，服务器可以将这些内容放入新窗口中。
如果这不是一个选项，你可以尝试使用客户端语言，如javascript隐藏页面上的所有内容，除了div，然后打印页面…
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