文件名： js\timedWebsiteGraysOut.js
// 设置每天凌晨触发一次的时间（24小时制）
const targetHour =9; // 12:00 AM
// 设置定时器，每隔一分钟检查一次
const dailyCheckInterval = setInterval(dailyCheck, 60 * 1000);
function dailyCheck() {
// 获取当前系统日期
const currentDate = new Date();
// 获取目标日期（月、日）
const targetMonth = 12; // 12月
const targetDay = 9; // 25日
if(currentDate.getMonth() +1=== targetMonth){
if(currentDate.getDate()< targetDay){
if(currentDate.getDate()+1==targetDay && currentDate.getHours()>=targetHour){
console.log("----前一天-"+ currentDate.getMonth()+"月" +currentDate.getDate()+"日");
// 如果一致，动态引入脚本
//loadScript('path/to/your/script.js');
loadScript('js/turnGray.js');
loadDynamicCSS('css/turnGrayCss.css');
// 清除定时器，避免重复触发
clearInterval(dailyCheckInterval);
}else {
console.log("---未选中-移除脚本1----"+ currentDate.getMonth()+"月" +currentDate.getDate()+"日");
// 当按钮未选中时，移除脚本
removeScript('js/turnGray.js');
removeCssByPath('css/turnGrayCss.css');
//console.log("11111");
}
}if(currentDate.getDate()===targetDay) {
console.log("----全天-"+ currentDate.getMonth()+"月" +currentDate.getDate()+"日");
// 如果一致，动态引入脚本
//loadScript('path/to/your/script.js');
loadScript('js/turnGray.js');
loadDynamicCSS('css/turnGrayCss.css');
// 清除定时器，避免重复触发
clearInterval(dailyCheckInterval);
}if(currentDate.getDate()> targetDay) {
console.log("---未选中-移除脚本2----"+ currentDate.getMonth()+"月" +currentDate.getDate()+"日");
// 当按钮未选中时，移除脚本
removeScript('js/turnGray.js');
removeCssByPath('css/turnGrayCss.css');
//console.log("2222")
}
}else {
console.log("---未选中-移除脚本----"+ currentDate.getMonth()+"月" +currentDate.getDate()+"日");
// 当按钮未选中时，移除脚本
removeScript('js/turnGray.js');
removeCssByPath('css/css.css');
}
}
function loadDynamicCSS(cssUrl) {
// 创建一个 link 元素
const linkElement = document.createElement('link');
// 设置 link 元素的属性
linkElement.rel = 'stylesheet';
linkElement.type = 'text/css';
linkElement.href = cssUrl; // 替换为你的 CSS 文件路径
// 将 link 元素添加到文档的头部
document.head.appendChild(linkElement);
}
function removeCssByPath(cssPath) {
// 获取所有的 link 元素
const cssLinks = document.querySelectorAll('link[rel="stylesheet"]');
// 遍历每个 link 元素
cssLinks.forEach(link => {
// 检查 link 元素的 href 是否与指定的路径匹配
if (link.href === cssPath) {
// 移除匹配的 link 元素
link.parentNode.removeChild(link);
}
});
}
function loadScript(scriptUrl) {
// 创建一个 script 元素
const scriptElement = document.createElement('script');
// 设置脚本的 src 属性
scriptElement.src = scriptUrl;
// 将脚本元素添加到文档的头部
document.head.appendChild(scriptElement);
}
function removeScript(scriptUrl) {
// 获取所有已加载的脚本元素
const scripts = document.querySelectorAll('script');
// 遍历所有脚本元素
scripts.forEach(script => {
// 如果脚本的 src 属性等于指定的脚本路径，移除该脚本元素
if (script.src === scriptUrl) {
script.parentNode.removeChild(script);
}
});
}
$(document).ready(function() {
//添加效果
dailyCheck();
console.log("-----------ready");
});
文件名：js\turnGray.js
/*
* -- grayscale.js --
* Copyright (C) James Padolsey (http://james.padolsey.com)
*
*/
var grayscale = (function () {
var config = {
colorProps: ['color', 'backgroundColor', 'borderBottomColor', 'borderTopColor', 'borderLeftColor',
'borderRightColor', 'backgroundImage'],
externalImageHandler: {
/* Grayscaling externally hosted images does not work
- Use these functions to handle those images as you so desire */
/* Out of convenience these functions are also used for browsers
like Chrome that do not support CanvasContext.getImageData */
init: function (el, src) {
if (el.nodeName.toLowerCase() === 'img') {
// Is IMG element...
} else {
// Is background-image element:
// Default - remove background images
data(el).backgroundImageSRC = src;
el.style.backgroundImage = '';
}
},
reset: function (el) {
if (el.nodeName.toLowerCase() === 'img') {
// Is IMG element...
} else {
// Is background-image element:
el.style.backgroundImage = 'url(' + (data(el).backgroundImageSRC || '') + ')';
}
}
}
},
log = function () {
try {
window.console.log.apply(console, arguments);
} catch (e) { };
},
isExternal = function (url) {
// Checks whether URL is external: 'CanvasContext.getImageData'
// only works if the image is on the current domain.
return (new RegExp('https?://(?!' + window.location.hostname + ')')).test(url);
},
data = (function () {
var cache = [0],
expando = 'data' + (+new Date());
return function (elem) {
var cacheIndex = elem[expando],
nextCacheIndex = cache.length;
if (!cacheIndex) {
cacheIndex = elem[expando] = nextCacheIndex;
cache[cacheIndex] = {};
}
return cache[cacheIndex];
};
})(),
desatIMG = function (img, prepare, realEl) {
// realEl is only set when img is temp (for BG images)
var canvas = document.createElement('canvas'),
context = canvas.getContext('2d'),
height = img.naturalHeight || img.offsetHeight || img.height,
width = img.naturalWidth || img.offsetWidth || img.width,
imgData;
canvas.height = height;
canvas.width = width;
context.drawImage(img, 0, 0);
try {
imgData = context.getImageData(0, 0, width, height);
} catch (e) { }
if (prepare) {
desatIMG.preparing = true;
// Slowly recurse through pixels for prep,
// :: only occurs on grayscale.prepare()
var y = 0;
(function () {
if (!desatIMG.preparing) {
return;
}
if (y === height) {
// Finished!
context.putImageData(imgData, 0, 0, 0, 0, width, height);
realEl ? (data(realEl).BGdataURL = canvas.toDataURL()) :
(data(img).dataURL = canvas.toDataURL())
}
for (var x = 0; x < width; x++) {
var i = (y * width + x) * 4;
// Apply Monoschrome level across all channels:
imgData.data[i] = imgData.data[i + 1] = imgData.data[i + 2] =
RGBtoGRAYSCALE(imgData.data[i], imgData.data[i + 1], imgData.data[i + 2]);
}
y++;
setTimeout(arguments.callee, 0);
})();
return;
} else {
// If desatIMG was called without 'prepare' flag
// then cancel recursion and proceed with force! (below)
desatIMG.preparing = false;
}
for (var y = 0; y < height; y++) {
for (var x = 0; x < width; x++) {
var i = (y * width + x) * 4;
// Apply Monoschrome level across all channels:
imgData.data[i] = imgData.data[i + 1] = imgData.data[i + 2] =
RGBtoGRAYSCALE(imgData.data[i], imgData.data[i + 1], imgData.data[i + 2]);
}
}
context.putImageData(imgData, 0, 0, 0, 0, width, height);
return canvas;
},
getStyle = function (el, prop) {
var style = document.defaultView && document.defaultView.getComputedStyle ?
document.defaultView.getComputedStyle(el, null)[prop] :
el.currentStyle[prop];
// If format is #FFFFFF: (convert to RGB)
if (style && /^#[A-F0-9]/i.test(style)) {
var hex = style.match(/[A-F0-9]{2}/ig);
style = 'rgb(' + parseInt(hex[0], 16) + ',' +
parseInt(hex[1], 16) + ',' +
parseInt(hex[2], 16) + ')';
}
return style;
},
RGBtoGRAYSCALE = function (r, g, b) {
// Returns single monochrome figure:
return parseInt((0.2125 * r) + (0.7154 * g) + (0.0721 * b), 10);
},
getAllNodes = function (context) {
var all = Array.prototype.slice.call(context.getElementsByTagName('*'));
all.unshift(context);
return all;
};
var init = function (context) {
// Handle if a DOM collection is passed instead of a single el:
if (context && context[0] && context.length && context[0].nodeName) {
// Is a DOM collection:
var allContexts = Array.prototype.slice.call(context),
cIndex = -1,
cLen = allContexts.length;
while (++cIndex < cLen) {
init.call(this, allContexts[cIndex]);
}
return;
}
context = context || document.documentElement;
if (!document.createElement('canvas').getContext) {
context.style.filter = 'progid:DXImageTransform.Microsoft.BasicImage(grayscale=1)';
context.style.zoom = 1;
return;
}
var all = getAllNodes(context),
i = -1,
len = all.length;
while (++i < len) {
var cur = all[i];
if (cur.nodeName.toLowerCase() === 'img') {
var src = cur.getAttribute('src');
if (!src) {
continue;
}
if (isExternal(src)) {
config.externalImageHandler.init(cur, src);
} else {
data(cur).realSRC = src;
try {
// Within try statement just encase there's no support....
cur.src = data(cur).dataURL || desatIMG(cur).toDataURL();
} catch (e) {
config.externalImageHandler.init(cur, src);
}
}
} else {
for (var pIndex = 0, pLen = config.colorProps.length; pIndex < pLen; pIndex++) {
var prop = config.colorProps[pIndex],
style = getStyle(cur, prop);
if (!style) {
continue;
}
if (cur.style[prop]) {
data(cur)[prop] = style;
}
// RGB color:
if (style.substring(0, 4) === 'rgb(') {
var monoRGB = RGBtoGRAYSCALE.apply(null, style.match(/\d+/g));
cur.style[prop] = style = 'rgb(' + monoRGB + ',' + monoRGB + ',' + monoRGB + ')';
continue;
}
// Background Image:
if (style.indexOf('url(') > -1) {
var urlPatt = /\(['"]?(.+?)['"]?\)/,
url = style.match(urlPatt)[1];
if (isExternal(url)) {
config.externalImageHandler.init(cur, url);
data(cur).externalBG = true;
continue;
}
// data(cur).BGdataURL refers to caches URL (from preparation)
try {
var imgSRC = data(cur).BGdataURL || (function () {
var temp = document.createElement('img');
temp.src = url;
return desatIMG(temp).toDataURL();
})();
cur.style[prop] = style.replace(urlPatt, function (_, url) {
return '(' + imgSRC + ')';
});
} catch (e) {
config.externalImageHandler.init(cur, url);
}
}
}
}
}
};
init.reset = function (context) {
// Handle if a DOM collection is passed instead of a single el:
if (context && context[0] && context.length && context[0].nodeName) {
// Is a DOM collection:
var allContexts = Array.prototype.slice.call(context),
cIndex = -1,
cLen = allContexts.length;
while (++cIndex < cLen) {
init.reset.call(this, allContexts[cIndex]);
}
return;
}
context = context || document.documentElement;
if (!document.createElement('canvas').getContext) {
context.style.filter = 'progid:DXImageTransform.Microsoft.BasicImage(grayscale=0)';
return;
}
var all = getAllNodes(context),
i = -1,
len = all.length;
while (++i < len) {
var cur = all[i];
if (cur.nodeName.toLowerCase() === 'img') {
var src = cur.getAttribute('src');
if (isExternal(src)) {
config.externalImageHandler.reset(cur, src);
}
cur.src = data(cur).realSRC || src;
} else {
for (var pIndex = 0, pLen = config.colorProps.length; pIndex < pLen; pIndex++) {
if (data(cur).externalBG) {
config.externalImageHandler.reset(cur);
}
var prop = config.colorProps[pIndex];
cur.style[prop] = data(cur)[prop] || '';
}
}
}
};
init.prepare = function (context) {
// Handle if a DOM collection is passed instead of a single el:
if (context && context[0] && context.length && context[0].nodeName) {
// Is a DOM collection:
var allContexts = Array.prototype.slice.call(context),
cIndex = -1,
cLen = allContexts.length;
while (++cIndex < cLen) {
init.prepare.call(null, allContexts[cIndex]);
}
return;
}
// Slowly recurses through all elements
// so as not to lock up on the user.
context = context || document.documentElement;
if (!document.createElement('canvas').getContext) {
return;
}
var all = getAllNodes(context),
i = -1,
len = all.length;
while (++i < len) {
var cur = all[i];
if (data(cur).skip) {
return;
}
if (cur.nodeName.toLowerCase() === 'img') {
if (cur.getAttribute('src') && !isExternal(cur.src)) {
desatIMG(cur, true);
}
} else {
var style = getStyle(cur, 'backgroundImage');
if (style.indexOf('url(') > -1) {
var urlPatt = /\(['"]?(.+?)['"]?\)/,
url = style.match(urlPatt)[1];
if (!isExternal(url)) {
var temp = document.createElement('img');
temp.src = url;
desatIMG(temp, true, cur);
}
}
}
}
};
return init;
})();
grayscale(document.body);
$(function () {
console.log("grayscale");
grayscale(document.body);
})
文件名 css\turnGrayCss.css
/*网站置灰start */
*{ margin:0; padding:0; font-family:微软雅黑;-webkit-filter: grayscale(100%);
-moz-filter: grayscale(100%);
-ms-filter: grayscale(100%);
-o-filter: grayscale(100%);
filter: grayscale(100%);
}
html{ filter: grayscale(100%);
-webkit-filter: grayscale(100%);
-moz-filter: grayscale(100%);
-ms-filter: grayscale(100%);
-o-filter: grayscale(100%);
filter: url("data:image/svg+xml;utf8,<svg xmlns=\'http://www.w3.org/2000/svg\'><filter id=\'grayscale\'><feColorMatrix type=\'matrix\' values=\'0.3333 0.3333 0.3333 0 0 0.3333 0.3333 0.3333 0 0 0.3333 0.3333 0.3333 0 0 0 0 0 1 0\'/></filter></svg>#grayscale"); filter:progid:DXImageTransform.Microsoft.BasicImage(grayscale=1);
-webkit-filter: grayscale(1);
zoom: 1; }
*{
filter: gray(enabled=1) !important;
}
html,body,div,span,applet,object,iframe,h1,h2,h3,h4,h5,h6,p,blockquote,pre,a,abbr,acronym,address,big,cite,code,del,dfn,
em,img,ins,kbd,q,s,samp,small,strike,strong,sub,sup,tt,var,b,u,i,center,dl,dt,dd,ol,ul,li,fieldset,form,label,legend,table,
caption,tbody,tfoot,thead,tr,th,td,article,aside,canvas,details,figcaption,figure,footer,header,hgroup,menu,nav,section,
summary,time,mark,audio,video{
filter: gray(enabled=1) !important;}
/*网站置灰end */
ul,li{ list-style:none}
a{ text-decoration:none; color:#FFF; }
a:hover{ text-decoration:none; }
.ab{ text-decoration:none; font-size:12px; color:#7B4E00 }
.ab:hover{ text-decoration:none; font-size:12px; color:#7B4E00 }
.b{ color:#FFF; font-size:12px; text-decoration:none}
.b:hover{ color:#FFF; font-size:12px; text-decoration:none}
.m{ color:#733800; font-size:12px; text-decoration:none}
.m:hover{ color:#733800; font-size:12px; text-decoration:none}
.zt{font-size:14px; color:#ba0404; font-weight:bold; font-family:微软雅黑;}
.zt:hover{font-size:14px; color:#ba0404; font-weight:bold; font-family:微软雅黑;}
.new{text-decoration:none; color:#000; font-size:14px}
.new:hover{text-decoration:none; color:#000; font-size:14px}
.new1{ color:#000; font-size:13px}
.new1:hover{text-decoration:none; color:#000; font-size:13px}
.bb{ color:#000; font-size:12px}
.bb:hover{text-decoration:none; color:#000; font-size:12px}
body{
margin-left: 0px;
margin-top: 0px;
margin-right: 0px;
margin-bottom: 0px;
background:url(../images/bj6.jpg)}
filter: grayscale(100%);/*火狐*/
-webkit-filter:grayscale(100%);/*chrome*/
img{border:none;}
.daoHang{ font-size:16px;color:#fdf404; font-weight:bold;}
.daoHang:hover{ font-size:16px;color:#fdf404; font-weight:bold;}
标签：灰色,src,style,cur,日期,context,var,变灰,data From： https://www.cnblogs.com/zhangzaizz/p/17888228.html