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');
}

下面的代码复制了查询选择器目标的所有相关节点，复制了它们在屏幕上看到的样式，因为许多用于css选择器目标的父元素将会丢失。如果有很多带有很多样式的子节点，这将导致一些延迟。

理想情况下，你应该有一个打印样式表，但这是为用例，没有打印样式表插入，你希望打印在屏幕上看到。

如果您在此页的浏览器控制台中复制以下项目，它将打印此页上的所有代码片段。

+function() {
    /**
     * copied from  https://stackoverflow.com/questions/19784064/set-javascript-computed-style-from-one-element-to-another
     * @author Adi Darachi https://stackoverflow.com/users/2318881/adi-darachi
     */
    var copyComputedStyle = function(from,to){
        var computed_style_object = false;
        //trying to figure out which style object we need to use depense on the browser support
        //so we try until we have one
        computed_style_object = from.currentStyle || document.defaultView.getComputedStyle(from,null);

        //if the browser dose not support both methods we will return null
        if(!computed_style_object) return null;

            var stylePropertyValid = function(name,value){
                        //checking that the value is not a undefined
                return typeof value !== 'undefined' &&
                        //checking that the value is not a object
                        typeof value !== 'object' &&
                        //checking that the value is not a function
                        typeof value !== 'function' &&
                        //checking that we dosent have empty string
                        value.length > 0 &&
                        //checking that the property is not int index ( happens on some browser
                        value != parseInt(value)

            };

        //we iterating the computed style object and compy the style props and the values
        for(property in computed_style_object)
        {
            //checking if the property and value we get are valid sinse browser have different implementations
                if(stylePropertyValid(property,computed_style_object[property]))
                {
                    //applying the style property to the target element
                        to.style[property] = computed_style_object[property];

                }   
        }   

    };


    // Copy over all relevant styles to preserve styling, work the way down the children tree.
    var buildChild = function(masterList, childList) {
        for(c=0; c<masterList.length; c++) {
           var master = masterList[c];
           var child = childList[c];
           copyComputedStyle(master, child);
           if(master.children && master.children.length > 0) {
               buildChild(master.children, child.children);
           }
        }
    }

    /** select elements to print with query selector **/
    var printSelection = function(querySelector) {
        // Create an iframe to make sure everything is clean and ordered.
        var iframe = document.createElement('iframe');
        // Give it enough dimension so you can visually check when modifying.
        iframe.width = document.width;
        iframe.height = document.height;
        // Add it to the current document to be sure it has the internal objects set up.
        document.body.append(iframe);

        var nodes = document.querySelectorAll(querySelector);
        if(!nodes || nodes.length == 0) {
           console.error('Printing Faillure: Nothing to print. Please check your querySelector');
           return;
        }

        for(i=0; i < nodes.length; i++) {

            // Get the node you wish to print.
            var origNode = nodes[i];

            // Clone it and all it's children
            var node = origNode.cloneNode(true);

            // Copy the base style.
            copyComputedStyle(origNode, node);

            if(origNode.children && origNode.children.length > 0) {
                buildChild(origNode.children, node.children);
            }

            // Add the styled clone to the iframe. using contentWindow.document since it seems the be the most widely supported version.

            iframe.contentWindow.document.body.append(node);
        }
        // Print the window
        iframe.contentWindow.print();

        // Give the browser a second to gather the data then remove the iframe.
        window.setTimeout(function() {iframe.parentNode.removeChild(iframe)}, 1000);
    }
window.printSelection = printSelection;
}();
printSelection('.default.prettyprint.prettyprinted')

打开一个新窗口 打开新窗口的文档对象，并在其中写入一个简单的文档，其中只包含您已经获得的div和必要的html头文件等-您可能还希望将文档拉入样式表，这取决于您的内容是什么 在新页面中放入一个脚本来调用window.print() 触发脚本

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">&nbsp;</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…

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>