建模实习作业是做一个界面，果断上html+css+js：https://lab.soarli.top/web/html/calc/其中，js监听键盘输入通过document.onkeydown=function(event)方法实现，下面是关于keyCode的总结记录（内容来自互联网，已在文末放置参考资料链接）：js判定不能输入某个字母或符号οnkeydοwn=“if(event.keyCode==32) return false”字母和数字键的键码值(keyCode)（左侧）按键键码按键键码按键键码按键键码A65J74S83149B66K75T84250C67L76U85351D68M77V86452E69N78W87553F70O79X88654G71P80Y89755H72Q81Z90856I73R82048957数字键盘上键的键码值（右侧）按键键码按键键码按键键码0966102Enter1081977103-1092989104.1103999105/1114100*106 5101+107 F键键码值按键键码按键键码F1112F7118F2113F8119F3114F9120F4115F10121F5116F11122F6117F12123控制键键码值(keyCode)按键键码按键键码按键键码按键键码BackSpace8Esc27Right Arrow39-_189Tab9Spacebar32Dw Arrow40.>190Clear12Page Up33Insert45/?191Enter13Page Down34Delete46`~192Shift16End35Num Lock144[{219Control17Home36;:186\ 220Alt18Left Arrow37=+187]}221Cape Lock20Up Arrow38,<188'"222多媒体键码值按键键码音量加175音量减174停止179静音173浏览器172邮件180搜索170收藏171参考资料：https://blog.csdn.net/weixin_44476265/article/details/110531227https://www.cnblogs.com/zhulmz/p/11623685.htmlhttps://www.cnblogs.com/fubuki/p/9835581.html
第一步dir > index.txt第二步 云台山旅游照片1 完成！到此就可以伴随着小度播放的音乐在电视等大屏幕上与家人共享温暖时光了。
6.22首次接触暂时对“夜间版”只是修改了方块div亮度，换了张亮度较低的背景图，但是配置过程相对复杂（ 尤其对于js小白 ）我是从一个大佬站点强行把功能扒了下来勉强实现了功能。不想罗嗦了，上代码：dark.css/*实际页面效果*/ .DarkMode *{ transition: .2s; } .DarkMode .mk-title-describe{ color: black!important; } .DarkMode body{ background-image:url(images/caoyuan_dark.jpg)!important; } .DarkMode .mk-color-item{ filter:opacity(0.8)!important; } /*切换动画效果*/ .Cuteen_DarkSky,.Cuteen_DarkSky:before { content: ""; position: fixed; left: 0; right: 0; top: 0; bottom: 0; z-index: 88888888; } .Cuteen_DarkSky { background: linear-gradient(#feb8b0,#fef9db) } .Cuteen_DarkSky:before { transition: 2s ease all; opacity: 0; background: linear-gradient(#4c3f6d,#6c62bb,#93b1ed) } .DarkMode .Cuteen_DarkSky:before { opacity: 1; } .Cuteen_DarkPlanet { z-index: 99999999; position: fixed; left: -50%; top: -50%; width: 200%; height: 200%; -webkit-animation: CuteenPlanetMove 2s cubic-bezier(.7,0,0,1); animation: CuteenPlanetMove 2s cubic-bezier(.7,0,0,1); transform-origin: center bottom; } @-webkit-keyframes CuteenPlanetMove { 0% { transform: rotate(0); } to { transform: rotate(360deg); } } @keyframes CuteenPlanetMove { 0% { transform: rotate(0); } to { transform: rotate(360deg); } } .Cuteen_DarkPlanet:after { position: absolute; left: 35%; top: 40%; width: 9.375rem; height: 9.375rem; border-radius: 50%; content: ""; background: linear-gradient(#fefefe,#fffbe8); }dark.js/* function switchNightMode(){ var night = document.cookie.replace(/(?:(?:^|.*;\s*)night\s*\=\s*([^;]*).*$)|^.*$/, "$1") || '0'; if(night == '0'){ document.querySelector('link[title="dark"]').disabled = true; document.querySelector('link[title="dark"]').disabled = false; document.cookie = "night=1;path=/" console.log('夜间模式开启'); }else{ document.querySelector('link[title="dark"]').disabled = true; document.cookie = "night=0;path=/" console.log('夜间模式关闭'); } }*/ function switchNightMode() { stopp();/*切换到夜间模式，关闭樱花飘落*/ $(' ').appendTo($("body")), setTimeout(function() { var DarkMode = document.cookie.replace(/(?:(?:^|.*;\s*)DarkMode\s*\=\s*([^;]*).*$)|^.*$/, "$1") || '0'; (DarkMode == '0') ? ($("html").addClass("DarkMode"),document.cookie = "DarkMode=1;path=/",console.log('夜间模式开启'),$('#modeicon').attr("xlink:href", "#icon-sun")):($("html").removeClass("DarkMode"),document.cookie = "DarkMode=0;path=/",console.log('夜间模式关闭'),$('#modeicon').attr("xlink:href", "#icon-_moon")) ,setTimeout(function() { $(".Cuteen_DarkSky").fadeOut(1e3, function() { $(this).remove() }) }, 2e3) }),50} function checkNightMode() { if ($("html").hasClass("n-f")) { $("html").removeClass("day"); $("html").addClass("DarkMode"); $('#modeicon').attr("xlink:href", "#icon-sun") return; } if ($("html").hasClass("d-f")) { $("html").removeClass("DarkMode"); $("html").addClass("day"); $('#modeicon').attr("xlink:href", "#icon-_moon") return; } if (document.cookie.replace(/(?:(?:^|.*;\s*)DarkMode\s*\=\s*([^;]*).*$)|^.*$/, "$1") === '') { if (new Date().getHours() >= 23 || new Date().getHours() < 7) { $("html").addClass("DarkMode"); document.cookie = "DarkMode=1;path=/"; console.log('夜间模式开启'); $('#modeicon').attr("xlink:href", "#icon-sun") } else { $("html").removeClass("DarkMode"); document.cookie = "DarkMode=0;path=/"; console.log('夜间模式关闭'); $('#modeicon').attr("xlink:href", "#icon-_moon") } } else { var DarkMode = document.cookie.replace(/(?:(?:^|.*;\s*)DarkMode\s*\=\s*([^;]*).*$)|^.*$/, "$1") || '0'; if (DarkMode == '0') { $("html").removeClass("DarkMode"); $('#modeicon').attr("xlink:href", "#icon-_moon") } else if (DarkMode == '1') { $("html").addClass("DarkMode"); $('#modeicon').attr("xlink:href", "#icon-sun") } } }“激活函数” - 明知不对，故意这么叫的 ::qqbq:bizui:: 6.25更新：CSS 方法：使用媒介查询prefers-color-scheme，支持dark，light，no-preference三种模式。@media (prefers-color-scheme: dark) { body { background: #121212; } article{ color:rgba(255,255,255,.86); } }JS方法：使用matchMedia判断是否符合媒介。返回一个MediaQueryList对象，该对象具有属性matches和media，方法addListener和removeListener。判断是否支持主题色：if (window.matchMedia('(prefers-color-scheme)').media === 'not all') { console.log('Browser doesn\'t support dark mode'); }判断是否处于深色模式：if(window.matchMedia('(prefers-color-scheme: dark)').matches){ //... }addListener接收一个MediaQueryList对象作为参数。为深色模式添加监听器，以响应系统切换到或切换出深色模式：let listeners={ dark:(mediaQueryList )=>{ if(mediaQueryList.matches){ alert('您切换到深色模式了！') } }, light:(mediaQueryList)=>{ if(mediaQueryList.matches){ alert('您切换到浅色模式了！') } } } window.matchMedia('(prefers-color-scheme: dark)').addListener(listeners.dark) window.matchMedia('(prefers-color-scheme: light)').addListener(listeners.light)思路：“移动端花园首页”、“机器学习文档页”采用css方法，若开启了暗黑模式，则直接执行媒介指定的 css ，包括通过display属性控制右下角切换图标不显示。博客则是借助js判断当前系统是否处于暗黑模式（包括win 10 的深色主题）。如果是，则通过window.οnlοad方法自动执行switch函数（https://open.soarli.top/bysoarli/autodarkmode.js）。6.26更新：昨天晚上通过cookie解决了状态记忆的问题，同时对不同站点的配置逻辑进行了优化调整，记录如下：花园PC端：根据时间+cookie+js方法实现切换总结：用户可以自由切换，与系统深色模式与否无关。花园移动端：根据cookie+css媒介方法实现切换（其中，媒介状态会隐藏切换图标，同下述的“机器学习静态网页”）6.26晚新增：修改原有的cookie检测代码，使其与刚才写的autodark插件完美杂糅，使得部分不支持深色模式的浏览器（或系统）也可以在夜间自动开启网站的夜间模式。顺便将此功能封装成为一个插件https://open.soarli.top/bysoarli/autodarkmode-helpcss.jswindow.onload=function(){ /*页面加载完毕首先检查cookie*/ /*页面加载完毕首先检查cookie*/ var DarkMode = document.cookie.replace(/(?:(?:^|.*;\s*)DarkMode\s*\=\s*([^;]*).*$)|^.*$/, "$1") || '0'; if (DarkMode == '0') { $("html").removeClass("DarkMode"); } else if (DarkMode == '1') { $("html").addClass("DarkMode"); } /*其次检查系统模式*/ if(window.matchMedia('(prefers-color-scheme: dark)').matches){ console.log('检测到深色模式已开启，已通过CSS开启夜间模式。'); } /*如果系统不支持*/ else{ if (document.cookie.replace(/(?:(?:^|.*;\s*)DarkMode\s*\=\s*([^;]*).*$)|^.*$/, "$1") === '') { if (new Date().getHours() >= 20 || new Date().getHours() < 7) { $("html").addClass("DarkMode"); document.cookie = "DarkMode=1;path=/"; console.log('夜间模式开启'); } else { $("html").removeClass("DarkMode"); document.cookie = "DarkMode=0;path=/"; console.log('夜间模式关闭'); } } } }总结：与时间 无关 有关，与系统暗黑模式状态、cookie有关，用户在系统设置暗黑模式下不可以自由切换（普通模式可以，即：系统优先级最高）。博客：直接采用autodark方法（纯js方法）实现切换。逻辑：页面加载完毕首先检查cookie，若darkmode==1：直接添加darkmode属性值。如果darkmode的cookie为0，执行清除darkmode属性值操作，从而实现了用户切换/刷新/打开新页面时当前状态的保持。其次检查系统模式，若系统媒介返回dark，则当前系统处于深色模式状态，添加darkmode的cookie=1，添加darkmode属性值。如果第2步系统未开启/不支持dark模式，则判断当前时间是否为22点~次日7点区间，若在：添加darkmode的cookie=1，添加darkmode属性值；若不在，修改darkmode的cookie=0，删除darkmode属性值，从而实现了白昼情况下非夜间模式的优先级较高。总结：与时间、系统暗黑模式状态、cookie有关，同时用户可以按照需求自由切换（用户优先级最高，系统紧随之）。机器学习静态网页：cookie+css媒介查询方法实现切换，若系统开启深色模式：直接通过css启用darkmode模式（不用也不会向html的class添加darkmode属性值），同时借助设置的css将切换开关给予隐藏（类似于微信公众号文章在PC深色模式下的情景）；若系统未开启深色模式：用户可通过右下角开关自行决定是否开启夜间模式。总结：与时间无关，与系统暗黑模式状态、cookie有关，用户在系统设置暗黑模式下不可以自由切换（普通模式可以，即：系统优先级最高）。另外：昨晚发现媒介模式在微信/QQ等无法正常执行，查阅官方文档得知需要添加一条声明支持双模式的meta标签： 问题基本解决了，再有新问题还会在这里更新， 为了保护视力 奉陪到底！2021.01.28更新留意到夜间模式下花园站点腾讯云Logo看不清，借助js通过cookie针对其进行优化。var divA = document.getElementById("txy_append"); var ifDarkMode = document.cookie.replace(/(?:(?:^|.*;\s*)DarkMode\s*\=\s*([^;]*).*$)|^.*$/, "$1") || '0'; if (ifDarkMode == '0') { divA.innerHTML = divA.innerHTML+' | ';} else if (ifDarkMode == '1') { divA.innerHTML = divA.innerHTML+' | '; }修改后的效果：参考资料：blog.zwying.com/usr/themes/Cuteen/assets/js/Cuteen_Main.jsblog.zwying.com/usr/themes/Cuteen/assets/css/cuteen.csswww.teakki.com/p/57dfbbf3d3a7507f975ef5b8qqdie.com/archives/night-mode-of-website.htmlmkblog.cn/2137/segmentfault.com/a/1190000022231056developer.mozilla.org/zh-CN/docs/Web/CSS/@media/prefers-color-schemeblog.csdn.net/qq_26483671/article/details/79464564developers.weixin.qq.com/doc/offiaccount/OA_Web_Apps/DarkMode.htmlzhuanlan.zhihu.com/p/100314975blog.csdn.net/a772116804/article/details/79612572
/*加载背景图*/ background-image：url（./images/background.jpg）; /* 背景图垂直、水平均居中 */ background-position: center center; /* 背景图不平铺 */ background-repeat: no-repeat; /* 当内容高度大于图片高度时，背景图像的位置相对于viewport固定 */ background-attachment: fixed; //此条属性必须设置否则可能无效/ /* 让背景图基于容器大小伸缩 */ background-size: cover; /* 设置背景颜色，背景图加载过程中会显示背景色 */ background-color: #CCCCCC; }或简写为如下CSS样式： body{ background:url(./images/background.jpg) no-repeat center center; background-size:cover; background-attachment:fixed; background-color:#CCCCCC; }background-size中，100%和cover的区别background-size：100% 100%;---按容器比例撑满，图片变形；background-size：cover;---把背景图片放大到适合元素容器的尺寸，图片比例不变，但是要注意，超出容器的部分可能会裁掉。参考资料：blog.csdn.net/weixin_44433499/article/details/86219615blog.csdn.net/wzj2584454/article/details/78100233
前言前段时间在“soarli实验室”搭建了“AI书架”，涉及到大量pdf文件的问题，目标如下：点击即可在浏览器里面预览，不必下载尽量隐藏真实文件地址，最大化程度上尊重版权不明确提供下载/打印功能多设备、多浏览器均可用要能够确保打开、实际渲染的速度不能太慢考虑经济效益，尽最大可能减少恶意请求带来的影响如果直接跨域引用CDN上的资源，严格意义上讲，以上几点都不能满足。一次尝试源码打包 soarli - pdf jquery.media.js/* * jQuery Media Plugin for converting elements into rich media content. * * Examples and documentation at: http://malsup.com/jquery/media/ * Copyright (c) 2007-2010 M. Alsup * Dual licensed under the MIT and GPL licenses: * http://www.opensource.org/licenses/mit-license.php * http://www.gnu.org/licenses/gpl.html * * @author: M. Alsup * @version: 0.99 (05-JUN-2013) * @requires jQuery v1.1.2 or later * $Id: jquery.media.js 2460 2007-07-23 02:53:15Z malsup $ * * Supported Media Players: * - Flash * - Quicktime * - Real Player * - Silverlight * - Windows Media Player * - iframe * * Supported Media Formats: * Any types supported by the above players, such as: * Video: asf, avi, flv, mov, mpg, mpeg, mp4, qt, smil, swf, wmv, 3g2, 3gp * Audio: aif, aac, au, gsm, mid, midi, mov, mp3, m4a, snd, rm, wav, wma * Other: bmp, html, pdf, psd, qif, qtif, qti, tif, tiff, xaml * * Thanks to Mark Hicken and Brent Pedersen for helping me debug this on the Mac! * Thanks to Dan Rossi for numerous bug reports and code bits! * Thanks to Skye Giordano for several great suggestions! * Thanks to Richard Connamacher for excellent improvements to the non-IE behavior! */ /*global SWFObject alert Sys */ /*jshint forin:false */ ;(function($) { "use strict"; var mode = document.documentMode || 0; var msie = /MSIE/.test(navigator.userAgent); var lameIE = msie && (/MSIE (6|7|8)\.0/.test(navigator.userAgent) || mode < 9); /** * Chainable method for converting elements into rich media. * * @param options * @param callback fn invoked for each matched element before conversion * @param callback fn invoked for each matched element after conversion */ $.fn.media = function(options, f1, f2) { if (options == 'undo') { return this.each(function() { var $this = $(this); var html = $this.data('media.origHTML'); if (html) $this.replaceWith(html); }); } return this.each(function() { if (typeof options == 'function') { f2 = f1; f1 = options; options = {}; } var o = getSettings(this, options); // pre-conversion callback, passes original element and fully populated options if (typeof f1 == 'function') f1(this, o); var r = getTypesRegExp(); var m = r.exec(o.src.toLowerCase()) || ['']; var fn; if (o.type) m[0] = o.type; else m.shift(); for (var i=0; i < m.length; i++) { fn = m[i].toLowerCase(); if (isDigit(fn[0])) fn = 'fn' + fn; // fns can't begin with numbers if (!$.fn.media[fn]) continue; // unrecognized media type // normalize autoplay settings var player = $.fn.media[fn+'_player']; if (!o.params) o.params = {}; if (player) { var num = player.autoplayAttr == 'autostart'; o.params[player.autoplayAttr || 'autoplay'] = num ? (o.autoplay ? 1 : 0) : o.autoplay ? true : false; } var $div = $.fn.media[fn](this, o); $div.css('backgroundColor', o.bgColor).width(o.width); if (o.canUndo) { var $temp = $(' ').append(this); $div.data('media.origHTML', $temp.html()); // store original markup } // post-conversion callback, passes original element, new div element and fully populated options if (typeof f2 == 'function') f2(this, $div[0], o, player.name); break; } }); }; /** * Non-chainable method for adding or changing file format / player mapping * @name mapFormat * @param String format File format extension (ie: mov, wav, mp3) * @param String player Player name to use for the format (one of: flash, quicktime, realplayer, winmedia, silverlight or iframe */ $.fn.media.mapFormat = function(format, player) { if (!format || !player || !$.fn.media.defaults.players[player]) return; // invalid format = format.toLowerCase(); if (isDigit(format[0])) format = 'fn' + format; $.fn.media[format] = $.fn.media[player]; $.fn.media[format+'_player'] = $.fn.media.defaults.players[player]; }; // global defautls; override as needed $.fn.media.defaults = { standards: true, // use object tags only (no embeds for non-IE browsers) canUndo: true, // tells plugin to store the original markup so it can be reverted via: $(sel).mediaUndo() width: $(window).width(), height: $(window).height(), autoplay: 0, // normalized cross-player setting bgColor: '#ffffff', // background color params: { wmode: 'transparent'}, // added to object element as param elements; added to embed element as attrs attrs: {}, // added to object and embed elements as attrs flvKeyName: 'file', // key used for object src param (thanks to Andrea Ercolino) flashvars: {}, // added to flash content as flashvars param/attr flashVersion: '7', // required flash version expressInstaller: null, // src for express installer // default flash video and mp3 player (@see: http://jeroenwijering.com/?item=Flash_Media_Player) flvPlayer: 'mediaplayer.swf', mp3Player: 'mediaplayer.swf', // @see http://msdn2.microsoft.com/en-us/library/bb412401.aspx silverlight: { inplaceInstallPrompt: 'true', // display in-place install prompt? isWindowless: 'true', // windowless mode (false for wrapping markup) framerate: '24', // maximum framerate version: '0.9', // Silverlight version onError: null, // onError callback onLoad: null, // onLoad callback initParams: null, // object init params userContext: null // callback arg passed to the load callback } }; // Media Players; think twice before overriding $.fn.media.defaults.players = { flash: { name: 'flash', title: 'Flash', types: 'flv,mp3,swf', mimetype: 'application/x-shockwave-flash', pluginspage: 'http://www.adobe.com/go/getflashplayer', ieAttrs: { classid: 'clsid:d27cdb6e-ae6d-11cf-96b8-444553540000', type: 'application/x-oleobject', codebase: 'http://fpdownload.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=' + $.fn.media.defaults.flashVersion } }, quicktime: { name: 'quicktime', title: 'QuickTime', mimetype: 'video/quicktime', pluginspage: 'http://www.apple.com/quicktime/download/', types: 'aif,aiff,aac,au,bmp,gsm,mov,mid,midi,mpg,mpeg,mp4,m4a,psd,qt,qtif,qif,qti,snd,tif,tiff,wav,3g2,3gp', ieAttrs: { classid: 'clsid:02BF25D5-8C17-4B23-BC80-D3488ABDDC6B', codebase: 'http://www.apple.com/qtactivex/qtplugin.cab' } }, realplayer: { name: 'real', title: 'RealPlayer', types: 'ra,ram,rm,rpm,rv,smi,smil', mimetype: 'audio/x-pn-realaudio-plugin', pluginspage: 'http://www.real.com/player/', autoplayAttr: 'autostart', ieAttrs: { classid: 'clsid:CFCDAA03-8BE4-11cf-B84B-0020AFBBCCFA' } }, winmedia: { name: 'winmedia', title: 'Windows Media', types: 'asx,asf,avi,wma,wmv', mimetype: isFirefoxWMPPluginInstalled() ? 'application/x-ms-wmp' : 'application/x-mplayer2', pluginspage: 'http://www.microsoft.com/Windows/MediaPlayer/', autoplayAttr: 'autostart', oUrl: 'url', ieAttrs: { classid: 'clsid:6BF52A52-394A-11d3-B153-00C04F79FAA6', type: 'application/x-oleobject' } }, // special cases img: { name: 'img', title: 'Image', types: 'gif,png,jpg' }, iframe: { name: 'iframe', types: 'html,pdf' }, silverlight: { name: 'silverlight', types: 'xaml' } }; // // everything below here is private // // detection script for FF WMP plugin (http://www.therossman.org/experiments/wmp_play.html) // (hat tip to Mark Ross for this script) function isFirefoxWMPPluginInstalled() { var plugs = navigator.plugins || []; for (var i = 0; i < plugs.length; i++) { var plugin = plugs[i]; if (plugin['filename'] == 'np-mswmp.dll') return true; } return false; } var counter = 1; for (var player in $.fn.media.defaults.players) { var types = $.fn.media.defaults.players[player].types; $.each(types.split(','), function(i,o) { if (isDigit(o[0])) o = 'fn' + o; $.fn.media[o] = $.fn.media[player] = getGenerator(player); $.fn.media[o+'_player'] = $.fn.media.defaults.players[player]; }); } function getTypesRegExp() { var types = ''; for (var player in $.fn.media.defaults.players) { if (types.length) types += ','; types += $.fn.media.defaults.players[player].types; } return new RegExp('\\.(' + types.replace(/,/ig,'|') + ')\\b'); } function getGenerator(player) { return function(el, options) { return generate(el, options, player); }; } function isDigit(c) { return '0123456789'.indexOf(c) > -1; } // flatten all possible options: global defaults, meta, option obj function getSettings(el, options) { options = options || {}; var a, n; var $el = $(el); var cls = el.className || ''; // support metadata plugin (v1.0 and v2.0) var meta = $.metadata ? $el.metadata() : $.meta ? $el.data() : {}; meta = meta || {}; var w = meta.width || parseInt(((cls.match(/\bw:(\d+)/)||[])[1]||0),10) || parseInt(((cls.match(/\bwidth:(\d+)/)||[])[1]||0),10); var h = meta.height || parseInt(((cls.match(/\bh:(\d+)/)||[])[1]||0),10) || parseInt(((cls.match(/\bheight:(\d+)/)||[])[1]||0),10); if (w) meta.width = w; if (h) meta.height = h; if (cls) meta.cls = cls; // crank html5 style data attributes var dataName = 'data-'; for (var i=0; i < el.attributes.length; i++) { a = el.attributes[i], n = $.trim(a.name); var index = n.indexOf(dataName); if (index === 0) { n = n.substring(dataName.length); meta[n] = a.value; } } a = $.fn.media.defaults; var b = options; var c = meta; var p = { params: { bgColor: options.bgColor || $.fn.media.defaults.bgColor } }; var opts = $.extend({}, a, b, c); $.each(['attrs','params','flashvars','silverlight'], function(i,o) { opts[o] = $.extend({}, p[o] || {}, a[o] || {}, b[o] || {}, c[o] || {}); }); if (typeof opts.caption == 'undefined') opts.caption = $el.text(); // make sure we have a source! opts.src = opts.src || $el.attr('href') || $el.attr('src') || 'unknown'; return opts; } // // Flash Player // // generate flash using SWFObject library if possible $.fn.media.swf = function(el, opts) { var f, p; if (!window.SWFObject && !window.swfobject) { // roll our own if (opts.flashvars) { var a = []; for (f in opts.flashvars) a.push(f + '=' + opts.flashvars[f]); if (!opts.params) opts.params = {}; opts.params.flashvars = a.join('&'); } return generate(el, opts, 'flash'); } var id = el.id ? 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d=b.toLowerCase();c.fn["inner"+b]=function(){return this[0]?c.css(this[0],d,false,"padding"):null};c.fn["outer"+b]=function(f){return this[0]?c.css(this[0],d,false,f?"margin":"border"):null};c.fn[d]=function(f){var e=this[0];if(!e)return f==null?null:this;if(c.isFunction(f))return this.each(function(i){var j=c(this);j[d](f.call(this,i,j[d]()))});return"scrollTo"in e&&e.document?e.document.compatMode==="CSS1Compat"&&e.document.documentElement["client"+b]|| e.document.body["client"+b]:e.nodeType===9?Math.max(e.documentElement["client"+b],e.body["scroll"+b],e.documentElement["scroll"+b],e.body["offset"+b],e.documentElement["offset"+b]):f===v?c.css(e,d):this.css(d,typeof f==="string"?f:f+"px")}});z.jQuery=z.$=c})(window); 在此基础上确实可以解决跨域下隐藏真实URL时无法正常使用window.open问题（会弹出about:blank），但是在chrome和firefox以外不支持PDF预览的浏览器（疯狂暗示Safari等手机浏览器）仍不能正常显示。PDF.JS闪亮登场下载地址：https://mozilla.github.io/pdf.js/viewer.html默认指向compressed.tracemonkey-pldi-09.pdf屏蔽右键 隐藏打印/下载按钮注意此处display: none若写为visibility:hidden则只会表面隐藏，实际仍占用空间。隐藏真实链接 《智能革命》跨域问题(配置CORS）在目标服务器 http://localhost:8081 新增下面头部（响应头）即可。Access-Control-Allow-Origin: * Access-Control-Allow-Methods: GET, POST, PUT, OPTIONS Access-Control-Expose-Headers: Accept-Ranges, Content-Encoding, Content-Length, Content-Rangenginx（其他服务器类似）：location / { add_header Access-Control-Allow-Origin '*'; add_header Access-Control-Allow-Methods 'GET, POST, PUT, OPTIONS'; add_header Access-Control-Expose-Headers 'Accept-Ranges, Content-Encoding, Content-Length, Content-Range'; }使用方法：http://localhost/pdf.js/web/viewer.html?file=http://localhost:8081/demo.pdf以为这样就大功告成了吗？ 很遗憾，还是报了之前的错误file origin does not match viewer's在viewer.js文件里搜索关键字 （file origin does not match），哈哈真的有 （本来就有的好吗）。贴下关键代码, 在1863行左右：{ var HOSTED_VIEWER_ORIGINS = ['null', 'http://mozilla.github.io', 'https://mozilla.github.io']; validateFileURL = function validateFileURL(file) { if (file === undefined) { return; } try { var viewerOrigin = new URL(window.location.href).origin || 'null'; if (HOSTED_VIEWER_ORIGINS.indexOf(viewerOrigin) >= 0) { return; } var fileOrigin = new URL(file, window.location.href).origin; if (fileOrigin !== viewerOrigin) { throw new Error('file origin does not match viewer\'s'); } } catch (ex) { var message = ex && ex.message; PDFViewerApplication.l10n.get('loading_error', null, 'An error occurred while loading the PDF.').then(function (loadingErrorMessage) { PDFViewerApplication.error(loadingErrorMessage, { message: message }); }); throw ex; } }; }这里使用了try捕捉错误，注意第2个条件语句，因为当前源与目标源不一样，所以抛出了异常。if (fileOrigin !== viewerOrigin) { // throw new Error('file origin does not match viewer\'s'); }很好解决，只要把throw这行注释即可。 这就到此结束了，完美解决跨域问题。在又拍云上，添加响应头的方法如下（借助边缘规则）：到这里，问题完美解决~6.20午更新：禁用Ctrl+S发现按下Ctrl+S，PDF文件会被自动下载，为加强版权保护，进行如下操作：找到pdf/web/viewer.js，注释掉其中两行。（不同版本所在行数可能不同，根据行数找不到时请根据内容搜索）问题解决！进阶若对源文件保密性有相对更高的要求，可以按照如下方法做进一步的配置：参考资料：blog.csdn.net/xuexiaodong009/article/details/13297475blog.csdn.net/qq_22823581/article/details/53462314www.geek-share.com/detail/2754397278.htmlblog.csdn.net/bianliuzhu/article/details/80622215www.open-open.com/news/view/1fc3e18blog.csdn.net/laizhouxiaoboge/article/details/59103951www.xiejiahe.com/blog/detail/5be97f71df53a14006035e2ahelp.upyun.com/knowledge-base/cdn-how-to-use-edgerules/upyun-assets.b0.upaiyun.com/docs/cdn/edgerules/edgerules_rule_youxianji.pngwww.jianshu.com/p/23eda8bd0396www.cnblogs.com/andrezheng/p/9778198.html
通过CSS代码判断来实现自动PC端显示，手机端隐藏
实现场景描述：有些内容部署在PC端但是有不适合在手机端显示（比如盒子过大，遮挡内容）或者手机端显示毫无意义等。我们可以使用下面的代码来实现：电脑端显示，手机端隐藏。实现方法：CSS控制判断@media screen and (max-width: 1221px) { .wapnone{display:none; } }在需要隐藏的区域加一个DIV，代码如下： 你要css判断隐藏的内容 括号里面的1221px表示如果屏幕尺寸达到了1221像素以下将会隐藏否则显示，具体数值可以自行调试。原文地址：muuzi.cn/655.html
1. docsify介绍docsify 是一个动态生成文档网站的工具。不同于 GitBook、Hexo 的地方是它不会生成将 .md 转成 .html 文件，所有转换工作都是在运行时进行。这将非常实用，如果只是需要快速的搭建一个小型的文档网站，或者不想因为生成的一堆 .html 文件“污染” commit 记录，只需要创建一个 index.html 就可以开始写文档而且直接部署在 GitHub Pages。2. 引入docsify方式模板index.html 我的index.html 正在加载，请稍侯... 默认支持README.md，如需其他文件，接着看。3.关于每个页面和URL路径说明如果需要创建多个页面，或者需要多级路由的网站，在docsify里也能很容易的实现。例如创建一个guide.md文件，那么对应的路由就是/#/guide如果你的目录结构如下：-| ./ -| README.md -| guide.md -| zh-cn/ -| README.md -| guide.md那么对应的访问页面将是:./README.md => http://domain.com ./guide.md => http://domain.com/#/guide ./zh-cn/README.md => http://domain.com/#/zh-cn/ ./zh-cn/guide.md => http://domain.com/#/zh-cn/guide到这里基本功能就实现了，放Matlab安装教程方便给同学看的目的也达到了。后续：本想深入了解，但是时间预算不足...（懒）留下几个坑，看啥时候能填上：怎样实现搜索怎样才能不在http请求中暴漏md文件（防盗）其他功能有网友和官方文档已经总结到位了，链接在文末，顺便贴上部分截图防止失联：参考资料：docsify.js.org/#/zh-cn/segmentfault.com/a/1190000017576714juejin.im/post/5d672e286fb9a06aff5e8439
从明天起，做一个幸福的人，喂猫、学Python、周游网络世界...我有一所房子，位居网络深海、春暖花开。第4章表格第12章 XML与XHTML第13章CSS入门基础认识CSS传统HTML设计网页版面的缺点CSS的特点CSS的排版样式第14章 CSS文字与文本CSS中长度与颜色CSS中的文字属性CSS中的文本属性第15章 CSS背景与列表CSS 中背景的使用CSS中列表的使用第16章 CSS边框与边界CSS中边框的使用CSS中边界的使用第17章 CSS区块、浮动、定位、溢出、滚动条CSS中区块的使用CSS中浮动的使用CSS中定位的使用CSS中溢出的使用CSS中滚动条的使用第18章 CSS链接、光标、DHTML、缩放CSS 中链接的使用CSS 中光标的使用CSS 中 DHTML 的使用CSS 中缩放的使用第19章 CSS滤镜（非重点）Filter属性介绍（以下仅适用于IE浏览器）Alpha滤镜的使用Blur滤镜的使用Fliph、Flipv滤镜DropShadow滤镜Glow 滤镜Gray ,Invert,Xray 滤镜Shadow 滤镜Chrome写法：来源：https://www.runoob.com/cssref/css3-pr-filter.html.blur { -webkit-filter: blur(4px); filter: blur(4px); } .brightness { -webkit-filter: brightness(0.30); filter: brightness(0.30); } .contrast { -webkit-filter: contrast(180%); filter: contrast(180%); } .grayscale { -webkit-filter: grayscale(100%); filter: grayscale(100%); } .huerotate { -webkit-filter: hue-rotate(180deg); filter: hue-rotate(180deg); } .invert { -webkit-filter: invert(100%); filter: invert(100%); } .opacity { -webkit-filter: opacity(50%); filter: opacity(50%); } .saturate { -webkit-filter: saturate(7); filter: saturate(7); } .sepia { -webkit-filter: sepia(100%); filter: sepia(100%); } .shadow { -webkit-filter: drop-shadow(8px 8px 10px green); filter: drop-shadow(8px 8px 10px green); }第20章CSS定义选择器ID 与类(1).应用 ID(2).将 ID 与选择器结合(3).ID 的使用场合(4).避免使用 ID 的场合(5).应用类(6).结合多个类和 ID(7).利用类改写基本样式:(8).直接将类链接到元素上(9).避免,适合层叠分组继承上下文选择器子类选择器其他选择器代码注释与结构第21章 CSS构造模型div边距边框定位浮动第22章 CSS构造颜色、背景与图像1.设定颜色2.十六进制三元组3.使用 17 种具名颜色4.使用 span 更好的控制文本中局部区域的文本5.使用 display 属性提供区块转换6.背景图象渐变的制作7.给一个区块加上一个背景8.给标题加上一个小图标9.圆顶角10.简单的 CSS 阴影效果第23章CSS构造列表与导航1.内边距与外边距2.使用图片作为列表图标3.以背景图片作为项目列表图标4.内联列表5.背景图片和内联列表6.垂直导航栏7.创建垂直翻转的列表8.创建水平导航条第24章 CSS构造超链接1.给链接加上边框2.在文章段落中加上超级链接3.用背景图象添加记号4.利用派生来影响链接5.利用图片作为下划线6.突出显示不同类型的链接7.使用属性选择器来做链接8.创建按钮和翻转9.具有图象的翻转10.以访问链接样式11.纯 css 工具提示第25章 CSS 构造表格1.简单表格2.行组和列组3.表格选择符4.分隔的边框5.重复的边框6.隐藏和删除单元格、行、列7.垂直对齐数据第 26 章 CSS 构造表单1.表单标签的使用2.去掉默认的表单间隔3.给文本框添加漂亮的边框4.给下拉菜单设置背景色5.给文本区域添加滚动条6.表单外边框设置 fieldset legend7.结构化表单布局第27章 布局1. 流体浮动布局规格：当视窗变化时跟着变化采用：浮动布局兼容：兼容当前主流浏览器2. 流体定位布局规格：当视窗变化时跟着变化采用：定位布局兼容：兼容当前主流浏览器3. 固定浮动布局规格：固定大小，不能随着视窗改变采用：浮动布局兼容：兼容当前主流浏览器4.固定定位布局规格：固定大小，不能随着视窗改变采用：定位布局兼容：兼容当前主流浏览器
前言：前段时间过度青睐于web应用与云计算产品实例的体验，期间遇到过很多问题也解决过很多问题（当然还有暂未解决的问题），但是一直没有系统学习过其基础知识。今天无意间在学习强国网站学习一个CSS样式时在其上发现了一个资源宝库，如下图：在这个专栏，数学、物理、化学甚至是计算机的开放课程被搜罗的样样俱全，同时刚好看到了一门关于web的课程。借此机会，打算用一周左右的时间系统地学习下这一块儿，再系统地学完PHP+MYSQL（实在“没时间”的话就算了少睡会儿）真的得专注学习数学和机器学习了（这都5月中旬了，留给我的时间真的不多了）。回顾一下，大概是在初中一二年级的时候（应该是初一）首次对网站搭建产生了浓厚的兴趣（当时主要是受hao123的影响）。那时候接触到了HTML，听说了网页“三剑客”。但是当时由于资源实在有限（懒得找），了解最深的地方应该也就是超链接标签的写法了，至于web服务器－也就只是知道建网站需要有个“空间”，空间需要花很多钱去买，需要会使用一个名字叫做FTP的东西。。然后就拿新浪博客（现已关闭）的自定义栏目里面可以自定义源代码的功能练手。然后就没有然后了。。。一直到了大二上学期，一个超级偶然的机会，在学校的实验室里，认识了一个很厉害又有耐心的学长。从他那里先后了解到了Tomcat和Nginx，经过局域网内文件的成功传输，顿时明白了WEB服务器的作用，借助当时已经了解到的关于HEXO的知识和电脑120的一个计科大佬一起完成了电脑120网站后台发布与管理系统的配置。电脑120的网站有了雏形。考试之前只顾捣鼓电脑120的网站，自己搭建的博客闲置到一边了，为了纪念，已将其静态骨架保存在cdn站点首页，有缘的朋友们可以去看看。寒假期间，在Anoyer学长的启发下，接触到了Typecho，并利用寒假搭建了完全属于自己的第一个动态博客。当然，阿里云的学生机资格给了电脑120，在这儿只能用腾讯云1M的小水管了。好在各大免费CDN（首页底部挂有链接）和阿里云OSS，使得博客访问体验不算太差。博客只是基础设施，最重要的是内容的记载、知识的学习、能力的提升。写了这么多，也该看会儿视频，奔入主题啦。第一章：HTML详解与CSS选择器1.0内容介绍HTML+CSS部分主要参考资料开发工具和调试工具前端学习方法建议先完成再完美先理解问题练习、练习、再练习1.1Web是如何工作的：基本架构和原理Web无处不在：看新闻、刷微博、刷朋友圈、购物、学习…从输入URL，到页面呈现完成，究竟发生了什么？HTTP响应：HTTP：1.0、1.1、2.0HTML：4、51.2HTML基本要素（标记、元素、内容、属性）在HTML中，实际上一般不必区分“标记”和“元素”的概念。但是在严格定义中，我们通常把标记理解为“具体的某一个”，具有唯一性的概念；元素来理解为“某一类中的一个”-->每一个都可以有自己的属性。从面向对象的角度考虑：标记类比于“类”，元素类比于“对象”。HTML单标记元素HTML全局属性其中：id属性具有唯一性；class属性通常对应CSS中的class选择器；style属性叫做“行列样式属性”；title属性的作用主要是指定光标移上时显示的提示字样。1.3HTML 文档类型、注释1.4 HTML head及相关标记1.5 HTML 标题、段落和文本格式化1.6 HTML图片Image和超链接HyperlinkHTML图片其中，alt属性有利于图片友好显示和搜索引擎优化。HTML超链接1.7 HTML列表List和表格Table1.8 HTML的div和span作用：实现统一的样式设置/交互效果方法一：将效果添加到每个元素上（会导致维护超级困难）更好的方法：将他们放入一个统一的元素中概念的引入：块级元素：独占行行内元素：与其他元素共用行table元素从理论上讲可以直接用其多行多列的效果容纳其他元素，但最好不要这样做（应该用其直接存放数据）。1.9 HTML5中各种语义化分段元素引入这些分段元素的原因：如果用div id来自行分段：不利于项目交付（命名规则不尽相同）不利于搜索引擎优化因此引入了以上统一的分段元素规范。1.10 HTML表单Form1.11 文档对象模型DOMCSS选择器的基础1.12 HTML5最佳实践与全部标记总览1.13 HMTL Demo：开发和上线一个简单在线个人简历1.14 HTML中应用CSS的三种常用的方式文档内样式代码：元素的行内样式（代码可复用性低）：优化：外部样式文件（代码可复用性最高）：只需一行1.15 CSS规则基本语法选择器：选择器组：注意：选择器组里面若有任何一个选择器无效，则该选择器组无效。属性选择器：1.16 简单选择器（Type、ID、Class选择器）类型选择器：ID选择器：Class选择器：一个元素可以有多个class：这样设置可以使元素同时具有.outline的样式和.outline.abc的样式。1.17 属性选择器应用领域如：加上disabled属性后，会出现下图所示效果，视觉不友好。改进方法：改进后的效果：特定的属性选择器：例如：指定锚链接：1.18 上下文选择器e1 e2的选择可以简单理解为三步：选择能够匹配e1的所有元素取出所有匹配e1元素的后代元素在所有后代元素中挑选出能够匹配e2的元素e1>e2：选择e1中的子元素e2e1~e2：e1和e2是兄弟元素且e1在前e2在后e1+e2：选择e1的紧邻兄弟元素e2*：通配符例如：通配符星号的作用例如：1.19 伪类选择器第一种：结构化的伪类选择器目标：将选中的内容突出显示只需要：若要选择第二个子元素：只需要：若要选中奇数/偶数行：即实现效果：只需：第二种：UI伪类选择器例如：可以用来表示访问过的超链接特效。可以表示当鼠标悬停时触发的效果，如下。再例如：可以实现的效果是：仅当通过锚点访问时，添加黄色背景，如下图：小结：1.20 伪元素选择器若要给某一段话的每个首字符添加指定效果，可以通过标签（使用上下文选择器）：注意到此方法需要逐个添加span标签，因此我们可以尝试更好的方法：使用该方法时，首字符亦不会被添加到一个新的子元素中（所以叫做“伪元素”）：若要给首行添加效果：若要给元素添加固定首字符，如：除了直接修改HTML代码，还可以借助css：甚至可以对指定字符添加样式：类似的，还有::after。小结：1.21 CSS的级联Cascading和继承级联：当多个css作用于同一个HTML元素时：结果有一个规则无效。特指度（优先级）问题——ID>Class>Type若特指度相同，则后配置的规则生效。使用!important指定重要性——确保不会被覆盖如果都使用!important指定重要性或者没有都使用!important指定重要性，按照特指度判断。继承：如果元素没有设置属性值，则会默认继承父元素的属性值。小结：
效果：head部分添加一下内容： 参考资料：https://blog.csdn.net/qq_41320944/article/details/79921336https://www.zhihu.com/question/21386860