我有一个对比度更改脚本,它设置 cookie 并在页面加载时获取它们。 这是 Codepen 上的工作发现,带有控制台日志:“对比从 cookie 加载的绿色单色!”, 但在 Webhost 上,该函数找不到任何 cookie,并响应“未找到 cookie!”到控制台日志。
我已多次检查代码,搜索其他相关答案,但我无法弄清楚为什么此代码无法在我的网络主机上运行。
请问您有什么想法或建议吗? BR 马蒂亚斯
代码笔:https://codepen.io/matt-prime/pen/abzGEoY
// CONTRAST CHANGER
$(document).ready(function(){
console.log( "Event Listener ready!" );
// CHECK FOR COOKIE
var x = document.cookie;
if(x=='blackwhite') {
blackwhite();
console.log( "Contrast blackwhite loaded from cookie!" );
}
else if(x=='whiteblack') {
whiteblack();
console.log( "Contrast whiteblack loaded from cookie!" );
}
else if(x=='yellowblue') {
yellowblue();
console.log( "Contrast yellowblue loaded from cookie!" );
}
else if(x=='blueyellow') {
blueyellow();
console.log( "Contrast blueyellow loaded from cookie!" );
}
else if(x=='bernsteinmonochrome') {
bernsteinmonochrome();
console.log( "Contrast bernsteinmonochrome loaded from cookie!" );
}
else if(x=='greenmonochrome') {
greenmonochrome();
console.log( "Contrast greenmonochrome loaded from cookie!" );
}
else if(x=='commodore64') {
commodore64();
console.log( "Contrast commodore64 loaded from cookie!" );
}
else {console.log( "No cookies found!" );
}
// CONTRAST DEFAULT
$(".change-reset").click(function(){
$("*").removeClass("contrast-black-white contrast-white-black contrast-yellow-blue contrast-blue-yellow contrast-monochrome-bernstein contrast-monochrome-gruen contrast-commodore64");
// RESET COOKIE
document.cookie=1
console.log( "Contrast cookie reset!" );
});
// CONTRAST BLACK WHITE
$(".changeBW").click(function(){blackwhite();});
// CONTRAST WHITE BLACK
$(".changeWB").click(function(){whiteblack();});
// CONTRAST YELLOW BLUE
$(".changeYB").click(function(){yellowblue();});
// CONTRAST BLUE YELLOW
$(".changeBY").click(function(){blueyellow()});
// KONTRAST BERNSTEIN MONOCHROM
$(".changeBM").click(function(){bernsteinmonochrome()});
// CONTRAST GREEN MONOCHROM
$(".changeGM").click(function(){greenmonochrome()});
// CONTRAST COMMODORE 64
$(".changeC64").click(function(){commodore64()});
// CONTRAST LAYOUT CSS CLASSES
function blackwhite(){
$("*").removeClass("contrast-black-white contrast-white-black contrast-yellow-blue contrast-blue-yellow contrast-monochrome-bernstein contrast-monochrome-gruen contrast-commodore64");
$("*").addClass("contrast-black-white");
$("i.icon.fas.fa-adjust.contrast-black-white").removeClass("contrast-black-white");
$("span.btn-label.contrast-black-white").removeClass("contrast-black-white");
document.cookie = 'blackwhite';
console.log( "Contrast cookie blackwhite set!" );
}
function whiteblack(){
$("*").removeClass("contrast-black-white contrast-white-black contrast-yellow-blue contrast-blue-yellow contrast-monochrome-bernstein contrast-monochrome-gruen contrast-commodore64");
$("*").addClass("contrast-white-black");
$("i.icon.fas.fa-adjust.contrast-white-black").removeClass("contrast-white-black");
$("span.btn-label.contrast-white-black").removeClass("contrast-white-black");
document.cookie = 'whiteblack';
console.log( "Contrast cookie whiteblack set!" );
}
function yellowblue(){
$("*").removeClass("contrast-black-white contrast-white-black contrast-yellow-blue contrast-blue-yellow contrast-monochrome-bernstein contrast-monochrome-gruen contrast-commodore64");
$("*").addClass("contrast-yellow-blue");
$("i.icon.fas.fa-adjust.contrast-yellow-blue").removeClass("contrast-yellow-blue");
$("span.btn-label.contrast-yellow-blue").removeClass("contrast-yellow-blue");
document.cookie = 'yellowblue';
console.log( "Contrast cookie yellowblue set!" );
}
function blueyellow(){
$("*").removeClass("contrast-black-white contrast-white-black contrast-yellow-blue contrast-blue-yellow contrast-monochrome-bernstein contrast-monochrome-gruen contrast-commodore64");
$("*").addClass("contrast-blue-yellow");
$("i.icon.fas.fa-adjust.contrast-blue-yellow").removeClass("contrast-blue-yellow");
$("span.btn-label.contrast-blue-yellow").removeClass("contrast-blue-yellow");
document.cookie = 'blueyellow';
console.log( "Contrast cookie blueyellow set!" );
}
})
最佳答案
它对我来说也不适用于 codepen。我认为发生的事情如下
- 有时,您在 codepen 中运行代码,该代码创建了具有您想要的值的 cookie
- Cookie 会保留在它们运行的域中,尤其是当其中没有过期日期时
- 现在,当您在 codepen 中运行该页面时,您会得到结果。
清除codepen中的cookie,看看你会得到相同的结果。这是有道理的。
您必须在某处设置 cookie(并且没有代码可以执行此操作)。然后,当页面加载时,它会检查该值。
您可以从您设置 cookie 值的服务器端返回一个非 Http cookie。实现取决于后端技术。您也可以在 Web 服务器上注入(inject) cookie。
您设置 cookie 的唯一位置是当 cookie 已经设置并且您在函数中重新设置它时。
关于javascript - 代码可以在 Codepen 中运行,但不能在我的虚拟主机上运行,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/59737752/