把警示窗改为显示在页面右上角，显示几秒后会自动关闭。用鼠标点按信息窗口会立即关闭，并把内容拷贝到系统剪贴板。
当前为
// ==UserScript==
// @name elegant alert()
// @name:zh-CN 优雅的 alert()
// @name:zh-TW 優雅的 alert()
// @description Display a non-blocking alert box at the top right corner, and automatically close after a few seconds. Click on the alert box will close it immediately and copy the alert message to clipboard.
// @description:zh-CN 把警示窗改为显示在页面右上角，显示几秒后会自动关闭。用鼠标点按信息窗口会立即关闭，并把内容拷贝到系统剪贴板。
// @description:zh-TW 把警示窗改為顯示在頁面右上角，顯示幾秒後會自動關閉。用滑鼠點按訊息窗口會立即關閉，並把內容複製到系統剪貼簿。
// @namespace https://greasyfork.org/zh-TW/users/393133-evan-tseng
// @author Evan Tseng
// @version 1.12
// @match *://*/*
// @run-at document-start
// @grant none
// @license MIT
// ==/UserScript==
(function() {
'use strict';
const boxFont = '400 15pt sans-serif',
boxFontColor = '#222',
boxBgColor = 'rgba(240,240,210,.85)',
boxHoverColor = 'rgba(255,255,255,.9)',
popFontColor = '#8ff',
popBgColor = '#b00',
countdownColor = 'rgba(100,100,240,.2)',
popDuration = 1600, // the period of highlight poping (ms)
duration = 6400, // message box default lifetime (ms)
fadeOutDuration = 700, // message box disppearing duration (ms)
eaCSS = '@media screen and (max-width: 40em) { .elegantAlertBoxWrapper>.eaNormal, .elegantAlertBoxWrapper>.eaClose { max-width:75vw } }' +
'@media screen and (min-width: 40em) { .elegantAlertBoxWrapper>.eaNormal, .elegantAlertBoxWrapper>.eaClose { max-width:30em } }' +
'.elegantAlertBoxWrapper { position:fixed; top:8mm; right:12mm; max-height:calc(100vh - 16mm); z-index:2147483647; user-select:none; }' +
'.elegantAlertBoxWrapper>div { position:relative; float:right; clear:right; font:' + boxFont + '!important; line-height:1; color:' + boxFontColor + '; background:' + boxBgColor + '; padding:.1em .6em; margin-bottom:.4em; white-space:nowrap; overflow:hidden; text-overflow:ellipsis; border-radius:1em; opacity:.2; cursor:pointer; box-shadow:inset 0 0 0 1px rgba(255,255,255,.8), 0 1px 2mm rgba(0,0,0,.7); backdrop-filter:blur(2px); -webkit-backdrop-filter:blur(2px) }' +
'.elegantAlertBoxWrapper .eaBar { position: absolute; left:0; top:0; width:100%; height:100%; background:' + countdownColor + '; border-radius: 3px }' +
'.elegantAlertBoxWrapper .pop { opacity:1; max-width:75vw; max-height:10em; animation: pulse1 ' + popDuration + 'ms 1 }' +
'.elegantAlertBoxWrapper>.eaNormal { opacity:1; max-height:4em; transition:.3s }' +
'.elegantAlertBoxWrapper>.eaClose { background:' + boxBgColor + '; opacity:0; min-height:0; max-height:0; padding-top:0; padding-bottom:0; margin:0; transition:' + fadeOutDuration + 'ms; -ms-overflow-style:none; scrollbar-width:none }' +
'.elegantAlertBoxWrapper>.eaClose::-webkit-scrollbar { display:none }' +
'.elegantAlertBoxWrapper>.eaNormal:hover { max-width:80vw; background:' + boxHoverColor + '; z-index:2; box-shadow:inset 0 0 0 1px #fff, 0 1px 2mm rgba(0,0,0,.8); transform:scale(1.05); transition:.1s }' +
'.elegantAlertBoxWrapper>.eaNormal:active { box-shadow:inset 0 1px 1mm #000, 0 0 0 1px #777; transform:scale(.97); transition:50ms }' +
'.elegantAlertTextCopy { position:absolute; top:-2em; width:8em; height:1em }' +
'@keyframes pulse1 { 0% { opacity:.5 } 6% { color:' + popFontColor + '; background:' + popBgColor + '; opacity:1; transform:scale(1.08) } 9% { transform:scale(1.05) } 14% { transform:scale(1) } }';
var cssElement = document.createElement('style');
if(cssElement.styleSheet) cssElement.styleSheet.cssText = eaCSS;
else cssElement.appendChild(document.createTextNode(eaCSS));
cssElement.setAttribute('title', 'Elegant Alert');
document.querySelector('head').appendChild(cssElement);
var alertWrapper = null;
const ElegantAlertBox = function(msg, lifeTime = duration){
if(!alertWrapper) {
document.documentElement.appendChild(alertWrapper = document.createElement('div'));
alertWrapper.setAttribute('class', 'elegantAlertBoxWrapper');
}
this.exist = true;
this.createBox = function(msgText){
var box = this,
alBox = document.createElement('div');
alertWrapper.appendChild(alBox);
alBox.innerHTML = '<div class="eaBar"></div>' + msgText;
alBox.setAttribute('class', 'pop');
alBox.addEventListener('click', function(){
let tmp = document.createElement('textArea');
tmp.setAttribute('class', 'elegantAlertTextCopy');
tmp.value = msgText;
document.documentElement.appendChild(tmp);
tmp.select();
document.execCommand('copy');
tmp.remove();
box.close();
});
return alBox;
};
this.show = function(){
var box = this;
setTimeout(function(){
box.elm.setAttribute('class', 'eaNormal');
box.elm.querySelector('.eaBar').setAttribute('style', 'width:0; transition: linear ' + lifeTime + 'ms');
setTimeout(function(){
if(box.exist) box.close();
}, lifeTime);
}, popDuration);
};
this.close = function(){
var box = this;
box.elm.classList.add('eaClose');
setTimeout(function(){
if(box.exist) {
box.exist = false;
box.elm.remove();
box.elm = null;
if(!alertWrapper.hasChildNodes()) {
alertWrapper.remove();
alertWrapper = null
}
}
}, fadeOutDuration);
};
this.elm = this.createBox(msg);
this.show();
};
window.alert = function(message){
if(document.body) {
let aa = new ElegantAlertBox(message);
setTimeout(function(){ aa = null }, duration + 1000);
}
else setTimeout(function(){ window.alert(message); }, 250);
};
})();