打印网页的特定部分

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You would have to open a new window(or navigate to a new page) containing just the information you wish the user to be able to print

Javscript:

function printInfo(ele) {
var openWindow = window.open("", "title", "attributes");
openWindow.document.write(ele.previousSibling.innerHTML);
openWindow.document.close();
openWindow.focus();
openWindow.print();
openWindow.close();
}

HTML:

<div id="....">
<div>
content to print
</div><a href="#" onclick="printInfo(this)">Print</a>
</div>

A few notes here: the anchor must NOT have whitespace between it and the div containing the content to print

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最佳答案

You can use simple JavaScript to print a specific div from a page.

var prtContent = document.getElementById("your div id");
var WinPrint = window.open('', '', 'left=0,top=0,width=800,height=900,toolbar=0,scrollbars=0,status=0');
WinPrint.document.write(prtContent.innerHTML);
WinPrint.document.close();
WinPrint.focus();
WinPrint.print();
WinPrint.close();

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As answered here: https://stackoverflow.com/a/1072151/421243, you can add the specific section to a hidden frame with Javascript, focus it, and print it.

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In printPageArea() function, pass the specific div ID which you want to print. I've found this JavaScript code from codexworld.com.

function printPageArea(areaID){
var printContent = document.getElementById(areaID);
var WinPrint = window.open('', '', 'width=900,height=650');
WinPrint.document.write(printContent.innerHTML);
WinPrint.document.close();
WinPrint.focus();
WinPrint.print();
WinPrint.close();
}

The complete code and tutorial can be found from here - How to Print Page Area using JavaScript.

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I made this jQuery extension to print the HTML of the element selected: $('#div2').print();

$.fn.extend({
print: function() {
var frameName = 'printIframe';
var doc = window.frames[frameName];
if (!doc) {
$('<iframe>').hide().attr('name', frameName).appendTo(document.body);
doc = window.frames[frameName];
}
doc.document.body.innerHTML = this.html();
doc.window.print();
return this;
}
});

See it in action here.

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Instead of all the complicated JavaScript, you can actually achieve this with simple CSS: just use two CSS files, one for your normal screen display, and another for the display of ONLY the content you wish to print. In this latter file, hide everything you don't want printed, display only the pop up.

Remember to define the media attribute of both CSS files:

<link rel="stylesheet" href="screen-css.css" media="all" />
<link rel="stylesheet" href="print-css.css" media="print" />

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Here is my enhanced version that when we want to load css files or there are image references in the part to print.

In these cases, we have to wait until the css files or the images are fully loaded before calling the print() function. Therefor, we'd better to move the print() and close() function calls into the html. Following is the code example:

var prtContent = document.getElementById("order-to-print");
var WinPrint = window.open('', '', 'left=0,top=0,width=384,height=900,toolbar=0,scrollbars=0,status=0');
WinPrint.document.write('<html><head>');
WinPrint.document.write('<link rel="stylesheet" href="assets/css/print/normalize.css">');
WinPrint.document.write('<link rel="stylesheet" href="assets/css/print/receipt.css">');
WinPrint.document.write('</head><body onload="print();close();">');
WinPrint.document.write(prtContent.innerHTML);
WinPrint.document.write('</body></html>');
WinPrint.document.close();
WinPrint.focus();

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Just use CSS to hide the content you do not want printed. When the user selects print - the page will look to the " media="print" CSS for instructions about the layout of the page.

The media="print" CSS has instructions to hide the content that we do not want printed.

<!-- CSS for the things we want to print (print view) -->
<style type="text/css" media="print">


#SCREEN_VIEW_CONTAINER{
display: none;
}
.other_print_layout{
background-color:#FFF;
}
</style>


<!-- CSS for the things we DO NOT want to print (web view) -->
<style type="text/css" media="screen">


#PRINT_VIEW{
display: none;
}
.other_web_layout{
background-color:#E0E0E0;
}
</style>

<div id="SCREEN_VIEW_CONTAINER">
the stuff I DO NOT want printed is here and will be hidden -
and not printed when the user selects print.
</div>


<div id="PRINT_VIEW">
the stuff I DO want printed is here.
</div>

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I Got a better option,

First separate the printable and nonprintable section by class name or id

window.onafterprint = onAfterPrint;


function print(){
//hide the nonPrintable div
}


function onAfterPrint(){
// Visible the nonPrintable div
}

<input type="button" onclick="print()" value="Print"/>

That's all

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I wrote a tiny JavaScript module called PrintElements for dynamically printing parts of a webpage.

It works by iterating through selected node elements, and for each node, it traverses up the DOM tree until the BODY element. At each level, including the initial one (which is the to-be-printed node’s level), it attaches a marker class (pe-preserve-print) to the current node. Then attaches another marker class (pe-no-print) to all siblings of the current node, but only if there is no pe-preserve-print class on them. As a third act, it also attaches another class to preserved ancestor elements pe-preserve-ancestor.

A dead-simple supplementary print-only css will hide and show respective elements. Some benefits of this approach is that all styles are preserved, it does not open a new window, there is no need to move around a lot of DOM elements, and generally it is non-invasive with your original document.

See the demo, or read the related article for further details.

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Try this awesome ink-html library

import print from 'ink-html'
// const print = require('ink-html').default


// js
print(window.querySelector('#printable'))
// Vue.js
print(this.$refs.printable.$el)

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Styles

 @media print {


.no-print{
display : none !important;
}
}

Jquery

    function printInvoice()
{
printDiv = "#printDiv"; // id of the div you want to print
$("*").addClass("no-print");
$(printDiv+" *").removeClass("no-print");
$(printDiv).removeClass("no-print");


parent =  $(printDiv).parent();
while($(parent).length)
{
$(parent).removeClass("no-print");
parent =  $(parent).parent();
}
window.print();


}

Print Button Html

<input type="button" onclick="printInvoice();" value="Print">

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Here what worked for me

With jQuery and https://developer.mozilla.org/en-US/docs/Web/API/Window/open

  var $linkToOpenPrintDialog = $('#tvcPrintThisLinkId');
var windowObjectReference = null;
var windowFeatures = 'left=0,top=0,width=800,height=900,menubar=no,toolbar=no,location=yes,resizable=no,scrollbars=no,status=no';
var windowFeaturesStyles = '<link rel="stylesheet" media="print" href="/wp-content/themes/salient-child/dist/css/app-print.css">';


$linkToOpenPrintDialog.on('click', function(event) {
openPrintDialog(this.href, this.target, 'tvcInnerCalculatorDivId', event);
return false;
});


function openPrintDialog(url, windowName, elementToOpen, event) {


var elementContent = document.getElementById(elementToOpen);


if(windowObjectReference == null || windowObjectReference.closed) {


windowObjectReference = window.open( url, windowName, windowFeatures);
windowObjectReference.document.write(windowFeaturesStyles);
windowObjectReference.document.write(elementContent.innerHTML);
windowObjectReference.document.close();
windowObjectReference.focus();
windowObjectReference.print();
windowObjectReference.close();


} else {
windowObjectReference.focus();
};


event.preventDefault();
}

app-print.css

@media print {


body {
margin: 0;
color: black;
background-color: white;
}


}

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Try this:

Dump the innerHTML of the container into the iFrame (plus any print-specific CSS
print the iFrame contents.

Try it out in JSFiddle (iframes don't appear to work in StackOverflow's preview)

You can see the code here, but it won't work due to what are probably security limitations in StackOverflow's renderer.

const printButton = document.getElementById('print-button');


printButton.addEventListener('click', event => {
// build the new HTML page
const content = document.getElementById('name-card').innerHTML;
const printHtml = `<html>
<head>
<meta charset="utf-8">
<title>Name Card</title>
</head>
<body>${content}</body>
</html>`;
      

// get the iframe
let iFrame = document.getElementById('print-iframe');
  

// set the iFrame contents and print
iFrame.contentDocument.body.innerHTML = printHtml;
iFrame.focus();
iFrame.contentWindow.print();
  

});

<h1>Print your name badge</h1>
<div id="name-card" class="card">
<p>Hello my name is</p>
<h2>Max Powers</h2>
</div>
<p>You will be required to wear your name badge at all times</p>
<a id="print-button" class="btn btn-primary">Print</a>


<iframe id="print-iframe" width="0" height="0"></iframe>

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try this one.

export function printSectionOfWebpage(sectionSelector) {
const $body = jquery('body');
const $sectionToPrint = jquery(sectionSelector);
const $sectionToPrintParent = $sectionToPrint.parent();
const $printContainer = jquery('<div style="position:relative;">');


$printContainer.height($sectionToPrint.height()).append($sectionToPrint).prependTo($body);


const $content = $body.children().not($printContainer).not('script').detach();


/**
* Needed for those who use Bootstrap 3.x, because some of
* its `@media print` styles ain't play nicely when printing.
*/
const $patchedStyle = jquery('<style media="print">')
.text(
`
img { max-width: none !important; }
a[href]:after { content: ""; }
`
)
.appendTo('head');


window.print();


$body.prepend($content);
$sectionToPrintParent.prepend($sectionToPrint);


$printContainer.remove();
$patchedStyle.remove();
}

小开

You can use this JQuery plugin

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If there are a lot of css dependencies, the solutions above become difficult to use. If you

don't mind using a 3rd party library (html2canvas)
don't mind that all @media print css rules will be ignored (can be worked around)

you can try a slightly modified approach of @pmtamal 's answer.

Convert the html content in the target div to canvas
Open a new window and attach the canvas to that window
Print

Code Example:

let prtContent = document.querySelector(target);


html2canvas(prtContent).then(canvas => {
let WinPrint = window.open('', '', 'left=0,top=0,width=800,height=900,toolbar=0,scrollbars=0,status=0');
WinPrint.document.body.appendChild(canvas);
WinPrint.document.close();
WinPrint.focus();
WinPrint.print();
WinPrint.close();

});

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This answer covers printing one "specific part" of multiple "specific parts" on page.

Steps:

Place your "specific part" in a section (some kind of container). Each section should have a button with a value matching the ID of the section.
Style the section as needed you want in to appear on print. (basiclly it's how it appears in the browser window).
Create @media print rules.
Create javascript js function.

Example:

html:

<container>
<button type="button" onclick="print(this.value)" value="1">Print</button>
<section id="1">
...."specific part" that will be printed
</section>
</container>


<container>
<button type="button" onclick="print(this.value)" value="2">Print</button>
<section id="2">
...."specific part" that will be printed
</section>
</container>


<container>
<button type="button" onclick="print(this.value)" value="3">Print</button>
<section id="3">
...."specific part" that will be printed
</section>
</container>


<container>
<button type="button" onclick="print(this.value)" value="4">Print</button>
<section id="4">
...."specific part" that will be printed
</section>
</container>

css: // note here #PrintThis can be whatever ID you want.

@media print {
body * {
visibility: hidden;
}
#printThis, #printThis * {
visibility: visible;
}
#printThis {
position: absolute;
left: 0;
top: 0;
}
}

js:

function print(sectionID) {
// get the ID of the section to be printed
let section = document.getElementById(sectionID)
// set the ID of the section to match CSS @media print rules
section.setAttribute("id", "printThis")
// print the section
window.print();
// set back the ID of the section to what it was...
section.setAttribute("id", sectionID)
}