jQuery ASP.net 中的 PrintThis 核心颜色不可见
jQuery PrintThis in ASP.net Core color not visible
我对 ASP.net Core 中的 jQuery PrintThis 插件有疑问。
我用 summernote 格式创建了一个 html 字符串，例如 table 字体颜色为黄色。如果我用 jQuery 插件打印这个，每件事都会正确显示，但颜色不会显示。颜色还是黑色。
有人可以帮我吗？
提前致谢
奇尼
更新：
这是我的代码：
我调用函数的 Index.cshtml 和 PrintThis 插件中的 css。
/*
* printThis v1.15.1
* @desc Printing plug-in for jQuery
* @author Jason Day
*
* Resources (based on):
* - jPrintArea: http://plugins.jquery.com/project/jPrintArea
* - jqPrint: https://github.com/permanenttourist/jquery.jqprint
* - Ben Nadal: http://www.bennadel.com/blog/1591-Ask-Ben-Print-Part-Of-A-Web-Page-With-jQuery.htm
*
* Licensed under the MIT licence:
* http://www.opensource.org/licenses/mit-license.php
*
* (c) Jason Day 2015-2019
*
* Usage:
*
* $("#mySelector").printThis({
* debug: false, // show the iframe for debugging
* importCSS: true, // import parent page css
* importStyle: false, // import style tags
* printContainer: true, // grab outer container as well as the contents of the selector
* loadCSS: "path/to/my.css", // path to additional css file - use an array [] for multiple
* pageTitle: "", // add title to print page
* removeInline: false, // remove all inline styles from print elements
* removeInlineSelector: "body *", // custom selectors to filter inline styles. removeInline must be true
* printDelay: 333, // variable print delay
* header: null, // prefix to html
* footer: null, // postfix to html
* base: false, // preserve the BASE tag, or accept a string for the URL
* formValues: true, // preserve input/form values
* canvas: false, // copy canvas elements
* doctypeString: '...', // enter a different doctype for older markup
* removeScripts: false, // remove script tags from print content
* copyTagClasses: false // copy classes from the html & body tag
* beforePrintEvent: null, // callback function for printEvent in iframe
* beforePrint: null, // function called before iframe is filled
* afterPrint: null // function called before iframe is removed
* });
*
* Notes:
* - the loadCSS will load additional CSS (with or without @media print) into the iframe, adjusting layout
*/
;
(function($) {
function appendContent($el, content) {
if (!content) return;
// Simple test for a jQuery element
$el.append(content.jquery ? content.clone() : content);
}
function appendBody($body, $element, opt) {
// Clone for safety and convenience
// Calls clone(withDataAndEvents = true) to copy form values.
var $content = $element.clone(opt.formValues);
if (opt.formValues) {
// Copy original select and textarea values to their cloned counterpart
// Makes up for inability to clone select and textarea values with clone(true)
copyValues($element, $content, 'select, textarea');
}
if (opt.removeScripts) {
$content.find('script').remove();
}
if (opt.printContainer) {
// grab $.selector as container
$content.appendTo($body);
} else {
// otherwise just print interior elements of container
$content.each(function() {
$(this).children().appendTo($body)
});
}
}
// Copies values from origin to clone for passed in elementSelector
function copyValues(origin, clone, elementSelector) {
var $originalElements = origin.find(elementSelector);
clone.find(elementSelector).each(function(index, item) {
$(item).val($originalElements.eq(index).val());
});
}
var opt;
$.fn.printThis = function(options) {
opt = $.extend({}, $.fn.printThis.defaults, options);
var $element = this instanceof jQuery ? this : $(this);
var strFrameName = "printThis-" + (new Date()).getTime();
if (window.location.hostname !== document.domain && navigator.userAgent.match(/msie/i)) {
// Ugly IE hacks due to IE not inheriting document.domain from parent
// checks if document.domain is set by comparing the host name against document.domain
var iframeSrc = "javascript:document.write(\"<head><script>document.domain=\\"" + document.domain + "\\";</s" + "cript></head><body></body>\")";
var printI = document.createElement('iframe');
printI.name = "printIframe";
printI.id = strFrameName;
printI.className = "MSIE";
document.body.appendChild(printI);
printI.src = iframeSrc;
} else {
// other browsers inherit document.domain, and IE works if document.domain is not explicitly set
var $frame = $("<iframe id='" + strFrameName + "' name='printIframe' />");
$frame.appendTo("body");
}
var $iframe = $("#" + strFrameName);
// show frame if in debug mode
if (!opt.debug) $iframe.css({
position: "absolute",
width: "0px",
height: "0px",
left: "-600px",
top: "-600px"
});
// before print callback
if (typeof opt.beforePrint === "function") {
opt.beforePrint();
}
// $iframe.ready() and $iframe.load were inconsistent between browsers
setTimeout(function() {
// Add doctype to fix the style difference between printing and render
function setDocType($iframe, doctype){
var win, doc;
win = $iframe.get(0);
win = win.contentWindow || win.contentDocument || win;
doc = win.document || win.contentDocument || win;
doc.open();
doc.write(doctype);
doc.close();
}
if (opt.doctypeString){
setDocType($iframe, opt.doctypeString);
}
var $doc = $iframe.contents(),
$head = $doc.find("head"),
$body = $doc.find("body"),
$base = $('base'),
baseURL;
// add base tag to ensure elements use the parent domain
if (opt.base === true && $base.length > 0) {
// take the base tag from the original page
baseURL = $base.attr('href');
} else if (typeof opt.base === 'string') {
// An exact base string is provided
baseURL = opt.base;
} else {
// Use the page URL as the base
baseURL = document.location.protocol + '//' + document.location.host;
}
$head.append('<base href="' + baseURL + '">');
// import page stylesheets
if (opt.importCSS) $("link[rel=stylesheet]").each(function() {
var href = $(this).attr("href");
if (href) {
var media = $(this).attr("media") || "all";
$head.append("<link type='text/css' rel='stylesheet' href='" + href + "' media='" + media + "'>");
}
});
// import style tags
if (opt.importStyle) $("style").each(function() {
$head.append(this.outerHTML);
});
// add title of the page
if (opt.pageTitle) $head.append("<title>" + opt.pageTitle + "</title>");
// import additional stylesheet(s)
if (opt.loadCSS) {
if ($.isArray(opt.loadCSS)) {
jQuery.each(opt.loadCSS, function(index, value) {
$head.append("<link type='text/css' rel='stylesheet' href='" + this + "'>");
});
} else {
$head.append("<link type='text/css' rel='stylesheet' href='" + opt.loadCSS + "'>");
}
}
var pageHtml = $('html')[0];
// CSS VAR in html tag when dynamic apply e.g. document.documentElement.style.setProperty("--foo", bar);
$doc.find('html').prop('style', pageHtml.style.cssText);
// copy 'root' tag classes
var tag = opt.copyTagClasses;
if (tag) {
tag = tag === true ? 'bh' : tag;
if (tag.indexOf('b') !== -1) {
$body.addClass($('body')[0].className);
}
if (tag.indexOf('h') !== -1) {
$doc.find('html').addClass(pageHtml.className);
}
}
// print header
appendContent($body, opt.header);
if (opt.canvas) {
// add canvas data-ids for easy access after cloning.
var canvasId = 0;
// .addBack('canvas') adds the top-level element if it is a canvas.
$element.find('canvas').addBack('canvas').each(function(){
$(this).attr('data-printthis', canvasId++);
});
}
appendBody($body, $element, opt);
if (opt.canvas) {
// Re-draw new canvases by referencing the originals
$body.find('canvas').each(function(){
var cid = $(this).data('printthis'),
$src = $('[data-printthis="' + cid + '"]');
this.getContext('2d').drawImage($src[0], 0, 0);
// Remove the markup from the original
if ($.isFunction($.fn.removeAttr)) {
$src.removeAttr('data-printthis');
} else {
$.each($src, function(i, el) {
el.removeAttribute('data-printthis');
});
}
});
}
// remove inline styles
if (opt.removeInline) {
// Ensure there is a selector, even if it's been mistakenly removed
var selector = opt.removeInlineSelector || '*';
// $.removeAttr available jQuery 1.7+
if ($.isFunction($.removeAttr)) {
$body.find(selector).removeAttr("style");
} else {
$body.find(selector).attr("style", "");
}
}
// print "footer"
appendContent($body, opt.footer);
// attach event handler function to beforePrint event
function attachOnBeforePrintEvent($iframe, beforePrintHandler) {
var win = $iframe.get(0);
win = win.contentWindow || win.contentDocument || win;
if (typeof beforePrintHandler === "function") {
if ('matchMedia' in win) {
win.matchMedia('print').addListener(function(mql) {
if(mql.matches) beforePrintHandler();
});
} else {
win.onbeforeprint = beforePrintHandler;
}
}
}
attachOnBeforePrintEvent($iframe, opt.beforePrintEvent);
setTimeout(function() {
if ($iframe.hasClass("MSIE")) {
// check if the iframe was created with the ugly hack
// and perform another ugly hack out of neccessity
window.frames["printIframe"].focus();
$head.append("<script> window.print(); </s" + "cript>");
} else {
// proper method
if (document.queryCommandSupported("print")) {
$iframe[0].contentWindow.document.execCommand("print", false, null);
} else {
$iframe[0].contentWindow.focus();
$iframe[0].contentWindow.print();
}
}
// remove iframe after print
if (!opt.debug) {
setTimeout(function() {
$iframe.remove();
}, 1000);
}
// after print callback
if (typeof opt.afterPrint === "function") {
opt.afterPrint();
}
}, opt.printDelay);
}, 333);
};
// defaults
$.fn.printThis.defaults = {
debug: false, // show the iframe for debugging
importCSS: true, // import parent page css
importStyle: false, // import style tags
printContainer: true, // print outer container/$.selector
loadCSS: "", // path to additional css file - use an array [] for multiple
pageTitle: "", // add title to print page
removeInline: false, // remove inline styles from print elements
removeInlineSelector: "*", // custom selectors to filter inline styles. removeInline must be true
printDelay: 333, // variable print delay
header: null, // prefix to html
footer: null, // postfix to html
base: false, // preserve the BASE tag or accept a string for the URL
formValues: true, // preserve input/form values
canvas: false, // copy canvas content
doctypeString: '<!DOCTYPE html>', // enter a different doctype for older markup
removeScripts: false, // remove script tags from print content
copyTagClasses: false, // copy classes from the html & body tag
beforePrintEvent: null, // callback function for printEvent in iframe
beforePrint: null, // function called before iframe is filled
afterPrint: null // function called before iframe is removed
};
})(jQuery);
@{
ViewData["Title"] = "Index";
Layout = "~/Views/Shared/_Layout.cshtml";
}
<h1>Index</h1>
<div class="container">
Your Content
<p><font color="#ff0000">Hello World</font></p><p><span style="background-color: rgb(255, 0, 0);">Hello World</span></p>
</div>
<button id="print"> Print this </button>
<script src="~/lib/jquery/dist/jquery.min.js"></script>
<script src="~/lib/printThis/printThis.js"></script>
<script>
$(document).ready(function () {
$('#print').on("click", function () {
$('.container').printThis({
importCSS: true,
importStyle: true,
removeInline: false});
})
})
</script>
请检查您的代码，尝试将 importCSS 和 importStyle 设置为 true。
$('#advanced').on("click", function () {
$('#table2print').printThis({
importCSS: true,
importStyle: true,
removeInline: false
});
});
此外，您使用哪种浏览器打印table？可能问题与浏览器设置有关。例如，如果使用Google浏览器打印table，有一个颜色select或者在打印页面中，记得select Color选项。
此外，如果仍然无法正常工作，您能否 post 足够的代码来重现 Minimal, Complete, and Verifiable example 中的问题。
我对 ASP.net Core 中的 jQuery PrintThis 插件有疑问。
我用 summernote 格式创建了一个 html 字符串，例如 table 字体颜色为黄色。如果我用 jQuery 插件打印这个，每件事都会正确显示，但颜色不会显示。颜色还是黑色。
有人可以帮我吗？
提前致谢 奇尼
更新： 这是我的代码： 我调用函数的 Index.cshtml 和 PrintThis 插件中的 css。
/*
* printThis v1.15.1
* @desc Printing plug-in for jQuery
* @author Jason Day
*
* Resources (based on):
* - jPrintArea: http://plugins.jquery.com/project/jPrintArea
* - jqPrint: https://github.com/permanenttourist/jquery.jqprint
* - Ben Nadal: http://www.bennadel.com/blog/1591-Ask-Ben-Print-Part-Of-A-Web-Page-With-jQuery.htm
*
* Licensed under the MIT licence:
* http://www.opensource.org/licenses/mit-license.php
*
* (c) Jason Day 2015-2019
*
* Usage:
*
* $("#mySelector").printThis({
* debug: false, // show the iframe for debugging
* importCSS: true, // import parent page css
* importStyle: false, // import style tags
* printContainer: true, // grab outer container as well as the contents of the selector
* loadCSS: "path/to/my.css", // path to additional css file - use an array [] for multiple
* pageTitle: "", // add title to print page
* removeInline: false, // remove all inline styles from print elements
* removeInlineSelector: "body *", // custom selectors to filter inline styles. removeInline must be true
* printDelay: 333, // variable print delay
* header: null, // prefix to html
* footer: null, // postfix to html
* base: false, // preserve the BASE tag, or accept a string for the URL
* formValues: true, // preserve input/form values
* canvas: false, // copy canvas elements
* doctypeString: '...', // enter a different doctype for older markup
* removeScripts: false, // remove script tags from print content
* copyTagClasses: false // copy classes from the html & body tag
* beforePrintEvent: null, // callback function for printEvent in iframe
* beforePrint: null, // function called before iframe is filled
* afterPrint: null // function called before iframe is removed
* });
*
* Notes:
* - the loadCSS will load additional CSS (with or without @media print) into the iframe, adjusting layout
*/
;
(function($) {
function appendContent($el, content) {
if (!content) return;
// Simple test for a jQuery element
$el.append(content.jquery ? content.clone() : content);
}
function appendBody($body, $element, opt) {
// Clone for safety and convenience
// Calls clone(withDataAndEvents = true) to copy form values.
var $content = $element.clone(opt.formValues);
if (opt.formValues) {
// Copy original select and textarea values to their cloned counterpart
// Makes up for inability to clone select and textarea values with clone(true)
copyValues($element, $content, 'select, textarea');
}
if (opt.removeScripts) {
$content.find('script').remove();
}
if (opt.printContainer) {
// grab $.selector as container
$content.appendTo($body);
} else {
// otherwise just print interior elements of container
$content.each(function() {
$(this).children().appendTo($body)
});
}
}
// Copies values from origin to clone for passed in elementSelector
function copyValues(origin, clone, elementSelector) {
var $originalElements = origin.find(elementSelector);
clone.find(elementSelector).each(function(index, item) {
$(item).val($originalElements.eq(index).val());
});
}
var opt;
$.fn.printThis = function(options) {
opt = $.extend({}, $.fn.printThis.defaults, options);
var $element = this instanceof jQuery ? this : $(this);
var strFrameName = "printThis-" + (new Date()).getTime();
if (window.location.hostname !== document.domain && navigator.userAgent.match(/msie/i)) {
// Ugly IE hacks due to IE not inheriting document.domain from parent
// checks if document.domain is set by comparing the host name against document.domain
var iframeSrc = "javascript:document.write(\"<head><script>document.domain=\\"" + document.domain + "\\";</s" + "cript></head><body></body>\")";
var printI = document.createElement('iframe');
printI.name = "printIframe";
printI.id = strFrameName;
printI.className = "MSIE";
document.body.appendChild(printI);
printI.src = iframeSrc;
} else {
// other browsers inherit document.domain, and IE works if document.domain is not explicitly set
var $frame = $("<iframe id='" + strFrameName + "' name='printIframe' />");
$frame.appendTo("body");
}
var $iframe = $("#" + strFrameName);
// show frame if in debug mode
if (!opt.debug) $iframe.css({
position: "absolute",
width: "0px",
height: "0px",
left: "-600px",
top: "-600px"
});
// before print callback
if (typeof opt.beforePrint === "function") {
opt.beforePrint();
}
// $iframe.ready() and $iframe.load were inconsistent between browsers
setTimeout(function() {
// Add doctype to fix the style difference between printing and render
function setDocType($iframe, doctype){
var win, doc;
win = $iframe.get(0);
win = win.contentWindow || win.contentDocument || win;
doc = win.document || win.contentDocument || win;
doc.open();
doc.write(doctype);
doc.close();
}
if (opt.doctypeString){
setDocType($iframe, opt.doctypeString);
}
var $doc = $iframe.contents(),
$head = $doc.find("head"),
$body = $doc.find("body"),
$base = $('base'),
baseURL;
// add base tag to ensure elements use the parent domain
if (opt.base === true && $base.length > 0) {
// take the base tag from the original page
baseURL = $base.attr('href');
} else if (typeof opt.base === 'string') {
// An exact base string is provided
baseURL = opt.base;
} else {
// Use the page URL as the base
baseURL = document.location.protocol + '//' + document.location.host;
}
$head.append('<base href="' + baseURL + '">');
// import page stylesheets
if (opt.importCSS) $("link[rel=stylesheet]").each(function() {
var href = $(this).attr("href");
if (href) {
var media = $(this).attr("media") || "all";
$head.append("<link type='text/css' rel='stylesheet' href='" + href + "' media='" + media + "'>");
}
});
// import style tags
if (opt.importStyle) $("style").each(function() {
$head.append(this.outerHTML);
});
// add title of the page
if (opt.pageTitle) $head.append("<title>" + opt.pageTitle + "</title>");
// import additional stylesheet(s)
if (opt.loadCSS) {
if ($.isArray(opt.loadCSS)) {
jQuery.each(opt.loadCSS, function(index, value) {
$head.append("<link type='text/css' rel='stylesheet' href='" + this + "'>");
});
} else {
$head.append("<link type='text/css' rel='stylesheet' href='" + opt.loadCSS + "'>");
}
}
var pageHtml = $('html')[0];
// CSS VAR in html tag when dynamic apply e.g. document.documentElement.style.setProperty("--foo", bar);
$doc.find('html').prop('style', pageHtml.style.cssText);
// copy 'root' tag classes
var tag = opt.copyTagClasses;
if (tag) {
tag = tag === true ? 'bh' : tag;
if (tag.indexOf('b') !== -1) {
$body.addClass($('body')[0].className);
}
if (tag.indexOf('h') !== -1) {
$doc.find('html').addClass(pageHtml.className);
}
}
// print header
appendContent($body, opt.header);
if (opt.canvas) {
// add canvas data-ids for easy access after cloning.
var canvasId = 0;
// .addBack('canvas') adds the top-level element if it is a canvas.
$element.find('canvas').addBack('canvas').each(function(){
$(this).attr('data-printthis', canvasId++);
});
}
appendBody($body, $element, opt);
if (opt.canvas) {
// Re-draw new canvases by referencing the originals
$body.find('canvas').each(function(){
var cid = $(this).data('printthis'),
$src = $('[data-printthis="' + cid + '"]');
this.getContext('2d').drawImage($src[0], 0, 0);
// Remove the markup from the original
if ($.isFunction($.fn.removeAttr)) {
$src.removeAttr('data-printthis');
} else {
$.each($src, function(i, el) {
el.removeAttribute('data-printthis');
});
}
});
}
// remove inline styles
if (opt.removeInline) {
// Ensure there is a selector, even if it's been mistakenly removed
var selector = opt.removeInlineSelector || '*';
// $.removeAttr available jQuery 1.7+
if ($.isFunction($.removeAttr)) {
$body.find(selector).removeAttr("style");
} else {
$body.find(selector).attr("style", "");
}
}
// print "footer"
appendContent($body, opt.footer);
// attach event handler function to beforePrint event
function attachOnBeforePrintEvent($iframe, beforePrintHandler) {
var win = $iframe.get(0);
win = win.contentWindow || win.contentDocument || win;
if (typeof beforePrintHandler === "function") {
if ('matchMedia' in win) {
win.matchMedia('print').addListener(function(mql) {
if(mql.matches) beforePrintHandler();
});
} else {
win.onbeforeprint = beforePrintHandler;
}
}
}
attachOnBeforePrintEvent($iframe, opt.beforePrintEvent);
setTimeout(function() {
if ($iframe.hasClass("MSIE")) {
// check if the iframe was created with the ugly hack
// and perform another ugly hack out of neccessity
window.frames["printIframe"].focus();
$head.append("<script> window.print(); </s" + "cript>");
} else {
// proper method
if (document.queryCommandSupported("print")) {
$iframe[0].contentWindow.document.execCommand("print", false, null);
} else {
$iframe[0].contentWindow.focus();
$iframe[0].contentWindow.print();
}
}
// remove iframe after print
if (!opt.debug) {
setTimeout(function() {
$iframe.remove();
}, 1000);
}
// after print callback
if (typeof opt.afterPrint === "function") {
opt.afterPrint();
}
}, opt.printDelay);
}, 333);
};
// defaults
$.fn.printThis.defaults = {
debug: false, // show the iframe for debugging
importCSS: true, // import parent page css
importStyle: false, // import style tags
printContainer: true, // print outer container/$.selector
loadCSS: "", // path to additional css file - use an array [] for multiple
pageTitle: "", // add title to print page
removeInline: false, // remove inline styles from print elements
removeInlineSelector: "*", // custom selectors to filter inline styles. removeInline must be true
printDelay: 333, // variable print delay
header: null, // prefix to html
footer: null, // postfix to html
base: false, // preserve the BASE tag or accept a string for the URL
formValues: true, // preserve input/form values
canvas: false, // copy canvas content
doctypeString: '<!DOCTYPE html>', // enter a different doctype for older markup
removeScripts: false, // remove script tags from print content
copyTagClasses: false, // copy classes from the html & body tag
beforePrintEvent: null, // callback function for printEvent in iframe
beforePrint: null, // function called before iframe is filled
afterPrint: null // function called before iframe is removed
};
})(jQuery);
@{
ViewData["Title"] = "Index";
Layout = "~/Views/Shared/_Layout.cshtml";
}
<h1>Index</h1>
<div class="container">
Your Content
<p><font color="#ff0000">Hello World</font></p><p><span style="background-color: rgb(255, 0, 0);">Hello World</span></p>
</div>
<button id="print"> Print this </button>
<script src="~/lib/jquery/dist/jquery.min.js"></script>
<script src="~/lib/printThis/printThis.js"></script>
<script>
$(document).ready(function () {
$('#print').on("click", function () {
$('.container').printThis({
importCSS: true,
importStyle: true,
removeInline: false});
})
})
</script>
请检查您的代码，尝试将 importCSS 和 importStyle 设置为 true。
$('#advanced').on("click", function () {
$('#table2print').printThis({
importCSS: true,
importStyle: true,
removeInline: false
});
});
此外，您使用哪种浏览器打印table？可能问题与浏览器设置有关。例如，如果使用Google浏览器打印table，有一个颜色select或者在打印页面中，记得select Color选项。
此外，如果仍然无法正常工作，您能否 post 足够的代码来重现 Minimal, Complete, and Verifiable example 中的问题。