把警示窗改为显示在页面右上角，显示几秒后会自动关闭。用鼠标点按窗口会立即关闭，并把内容拷贝到系统剪贴簿。
当前为
// ==UserScript==
// @name elegant alert()
// @name:zh-CN 优雅的 alert()
// @name:zh-TW 優雅的 alert()
// @description Customized alert box at the top right corner, auto close in 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。用鼠标点按窗口会立即关闭，并把内容拷贝到系统剪贴簿。
// @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 1.06
// @include *://*
// @run-at document-start
// @grant none
// ==/UserScript==
(function() {
'use strict';
var alertWrap = null;
const ElegantAlertBox = function(msg){
const boxFont = '400 14pt sans-serif',
boxFontColor = '#220',
boxColor = 'rgba(240,240,210,.85)',
boxHoverColor = 'rgba(255,255,255,.85)',
popFontColor = '#8FF',
popBgColor = '#b00',
countdownColor = 'rgba(0,0,255,.1)',
duration = '6100';
if(!alertWrap) {
const css = '@media screen and (max-width: 600pt) { .elegantAlertBoxWrapper>div { max-width:75vw } }'+
'@media screen and (min-width: 600pt) { .elegantAlertBoxWrapper>div { max-width:450pt } }'+
'.elegantAlertBoxWrapper { position:fixed; top:3mm; right:2mm; padding:5mm; max-height:calc(100vh - 13mm); z-index:2147483647; -webkit-user-select:none; user-select:none; }'+
'.elegantAlertBoxWrapper>div { position:relative; float:right; clear:right; font:'+ boxFont +'; line-height:1.25; color:'+ popFontColor +'; background:'+ popBgColor +'; min-height:1.25em; padding:2px 2mm; margin-bottom:1.5mm; overflow:auto; border-radius:5px; opacity:0; 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>div>.eaBar { position: absolute; left:0; top:0; width:100%; height:100%; background:'+ countdownColor +'; border-radius: 3px }'+
'.elegantAlertBoxWrapper>.pop { color:'+ boxFontColor +'; background:'+ boxColor +'; opacity:1; max-height:10em; animation: pulse1 .3s 1 }'+
'.elegantAlertBoxWrapper>.eaNormal { color:'+ boxFontColor +'; background:'+ boxColor +'; opacity:1; max-height:10em; }'+
'.elegantAlertBoxWrapper>.eaNormal>.eaBar, .elegantAlertBoxWrapper>.eaClose>.eaBar { width:0; transition:' + duration + 'ms linear}'+
'.elegantAlertBoxWrapper>.eaClose { background:'+ boxColor +'; opacity:0; min-height:0; max-height:0; padding:0 2mm; margin:0; transition: .6s linear }'+
'.elegantAlertBoxWrapper>.eaNormal:hover { font-weight:600; background:'+ boxHoverColor +'; z-index:2; box-shadow:inset 0 0 0 1px rgba(255,255,255,.8), 0 1px 2mm rgba(0,0,0,.8); animation: pulse2 .2s 1 }'+
'.elegantAlertBoxWrapper>.eaNormal:active { box-shadow:0 0 0 1px #777, inset 0 1px 2px #555; transform:scale(0.97); transition: .1s }'+
'@keyframes pulse1 { 0% { opacity:0.5 } 12% { color: ' + popFontColor + '; background: ' + popBgColor + '; transform: scale(1.1) } 50% { transform: scale(1.02) } 100% { opacity:1; } }'+
'@keyframes pulse2 { 0% { } 30% { left: -2px; } 70% { left: 1px } 100% { } }',
cssStyle = document.createElement('style');
if(cssStyle.styleSheet) cssStyle.styleSheet.cssText = css;
else cssStyle.appendChild(document.createTextNode(css));
document.querySelector('head').appendChild(cssStyle);
alertWrap = document.createElement('div');
alertWrap.setAttribute("class", "elegantAlertBoxWrapper");
document.body.appendChild(alertWrap);
}
this.exist = true;
this.createBox = function(text){
var box = this,
alBox = document.createElement('div');
alertWrap.appendChild(alBox);
alBox.innerHTML = '<div class="eaBar"></div>' + text;
alBox.setAttribute("class", "pop");
alBox.onclick = function(){
let tmp = document.createElement('textArea');
tmp.value = text;
document.body.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");
setTimeout(function(){
if(box.exist) box.close();
}, duration);
}, 500);
};
this.close = function(){
var box = this;
box.elm.setAttribute("class", "eaClose");
setTimeout(function(){
if(box.exist) {
box.elm.remove();
if(!alertWrap.hasChildNodes()) {
alertWrap.remove();
alertWrap = null
}
box.elm = null;
box.exist = false;
}
}, 1000);
};
this.elm = this.createBox(msg);
this.show();
};
window.alert = function(message){
if(document.readyState == 'loading') setTimeout(function(){ window.alert(message); }, 250);
else new ElegantAlertBox(message);
};
})();