快捷键粘贴当前时间文本

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快捷键粘贴当前时间文本

使用键盘快捷键（windows[Ctrl+Alt+T]，其他系统[Ctrl+Shift+T]）快速粘贴当前时间文本到当前输入框当前光标位置
当前为 2020-10-29 提交的版本，查看最新版本。
换行
// ==UserScript==
// @name         快捷键粘贴当前时间文本
// @namespace    http://tampermonkey.net/
// @version      2020.10.29.1
// @description  使用键盘快捷键（windows[Ctrl+Alt+T]，其他系统[Ctrl+Shift+T]）快速粘贴当前时间文本到当前输入框当前光标位置
// @author       PY-DNG
// @include      *
// @grant        none
// ==/UserScript==

document.addEventListener('keydown', function(){
    // 获取按键代码
    let keycode = event.keyCode
    // 检测快捷键（windows[Ctrl+Alt+T]，其他系统[Ctrl+Shift+T]）是否被触发
    let bool = detectOS().indexOf('Win') != -1 ? (keycode === 84 && event.ctrlKey && event.altKey) : (keycode === 84 && event.ctrlKey && event.shiftKey);
    if (bool){
        // 获取日期时间文本
        let d = new Date();
        let timetext = d.getFullYear().toString() + "年" + d.getMonth().toString() + "月" + d.getDate().toString() + "日 " + d.getHours().toString() + ":" + d.getMinutes().toString() + ":" + d.getSeconds().toString();
        let CT = document.activeElement;
        let CPS = getTextselection(false);
        let CPE = getTextselection(true);
        CT.value = CT.value.substring(0, CPS) + timetext + CT.value.substring(CPE, CT.value.length);
        CPE = CPS + timetext.length;
        CT.setSelectionRange(CPE, CPE);
        CT.focus();
    }
})

function getTextselection(End) {
    var oText = document.activeElement;
    var cursurPosition = -1;
    if(End){ // 获取选定区域结尾位置
        cursurPosition = oText.selectionEnd;
    }else{   // 获取选定区域起始位置
        if (oText.selectionStart) { //正常
            cursurPosition = oText.selectionStart;
        } else { //在最左边
            cursurPosition = 0;
        }
    }
    if(cursurPosition == undefined){cursurPosition = 0};
    return cursurPosition;
}

function detectOS() {
    var userAgent = navigator.userAgent;
    var isWin = (navigator.platform == "Win32") || (navigator.platform == "Windows");
    var isMac = (navigator.platform == "Mac68K") || (navigator.platform == "MacPPC") || (navigator.platform == "Macintosh") || (navigator.platform == "MacIntel");
    if (isMac) return "Mac";
    var isUnix = (navigator.platform == "X11") && !isWin && !isMac;
    if (isUnix) return "Unix";
    var isLinux = (String(navigator.platform).indexOf("Linux") > -1);
    if (isLinux) return "Linux";
    if (isWin) {
        var isWin2K = userAgent.indexOf("Windows NT 5.0") > -1 || userAgent.indexOf("Windows 2000") > -1;
        if (isWin2K) return "Win2000";
        var isWinXP = userAgent.indexOf("Windows NT 5.1") > -1 || userAgent.indexOf("Windows XP") > -1;
        if (isWinXP) return "WinXP";
        var isWin2003 = userAgent.indexOf("Windows NT 5.2") > -1 || userAgent.indexOf("Windows 2003") > -1;
        if (isWin2003) return "Win2003";
        var isWinVista= userAgent.indexOf("Windows NT 6.0") > -1 || userAgent.indexOf("Windows Vista") > -1;
        if (isWinVista) return "WinVista";
        var isWin7 = userAgent.indexOf("Windows NT 6.1") > -1 || userAgent.indexOf("Windows 7") > -1;
        if (isWin7) return "Win7";
    }
    return "other";
}