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H2P: utils

针对 Date、localStorage 的操作

目前为 2020-09-13 提交的版本。查看 最新版本。

此脚本不应直接安装，它是一个供其他脚本使用的外部库。如果您需要使用该库，请在脚本元属性加入：// @require https://update.cn-greasyfork.org/scripts/411278/847397/H2P%3A%20utils.js 

  1. // ==UserScript==
  2. // @name        H2P: utils
  3. // @namespace   http://tampermonkey.net/
  4. // @version     0.0.7
  5. // @icon        http://www.douyutv.com/favicon.ico
  6. // @description 针对 Date、localStorage 的操作
  7. // @author      H2P
  8. // @compatible  chrome
  9. // ==/UserScript==
  10.  
  11. ((w) => {
  12.   'use strict';
  13.  
  14.   /**
  15.    * 在字符串前（后）添加 0
  16.    * @param {String} s
  17.    * @param {Number} len 
  18.    * @param {Boolean} isAddFront 
  19.    */
  20.   function add0(s = '', len = 0, isAddFront = true) {
  21.     s = s.toString();
  22.     while (s.length < len) { s = isAddFront ? '0' + s : s + '0'; }
  23.     return s;
  24.   }
  25.  
  26.   w.$util = (() => {
  27.     function Util() {
  28.       /**
  29.        * 键盘按键对应的 event code
  30.        */
  31.       this.keyCode = {
  32.         'a': 65, 'b': 66, 'c': 67, 'd': 68, 'e': 69, 'f': 70, 'g': 71,
  33.         'h': 72, 'i': 73, 'j': 74, 'k': 75, 'l': 76, 'm': 77, 'n': 78,
  34.         'o': 79, 'p': 80, 'q': 81, 'r': 82, 's': 83, 't': 84,
  35.         'u': 85, 'v': 86, 'w': 87, 'x': 88, 'y': 89, 'z': 90,
  36.       }
  37.  
  38.       /**
  39.        * 返回毫秒
  40.        * @param {Number} num 
  41.        */
  42.       this.timeMS = (num = 0) => {
  43.         num = Number.parseInt(num);
  44.         return num < 946684800000 ? num * 1000 : num;
  45.       }
  46.   
  47.       /**
  48.        * localStorage 相关操作
  49.        */
  50.       this.LS = (() => {
  51.         function LS() {
  52.           this.init = (itemKey = '', itemPre = {}) => {
  53.             let item = Object.assign({}, itemPre, this.get(itemKey));
  54.             for (let key in item) { if (!(key in itemPre)) { delete item[key]; } }
  55.             localStorage.removeItem(itemKey);
  56.             localStorage.setItem(itemKey, JSON.stringify(item));
  57.             return item;
  58.           }
  59.           this.set = (itemKey = '', item = {}) => { localStorage.setItem(itemKey, JSON.stringify(item)); },
  60.           this.get = (itemKey = '') => JSON.parse(localStorage.getItem(itemKey)) || {},
  61.           this.remove = (itemKey = '') => { localStorage.removeItem(itemKey); }
  62.         }
  63.         return new LS();
  64.       })();
  65.   
  66.       this.HMS = (time = 0) => {
  67.         time = this.timeMS(time);
  68.         let h = Number.parseInt(time / 3600000);
  69.         let m = Number.parseInt(time % 3600000 / 60000);
  70.         let s = Number.parseInt(time % 3600000 % 60000 / 1000);
  71.         return {
  72.           h: add0(h, 2),
  73.           m: add0(m, 2),
  74.           s: add0(s, 2),
  75.         }
  76.       }
  77.     }
  78.     return new Util();
  79.   })();
  80.  
  81.   // return millisecond
  82.   Date.prototype.$timems = Date.prototype.getTime;
  83.   // return second
  84.   Date.prototype.$times = function() { return Number.parseInt(this.getTime() / 1000); }
  85.   // format time: yyyy-MM-dd hh-mm-ss
  86.   Date.prototype.$formatTime = function() { return `${this.getFullYear()}-${add0(this.getMonth() + 1, 2)}-${add0(this.getDate(), 2)} ${add0(this.getHours(), 2)}:${add0(this.getMinutes(), 2)}:${add0(this.getSeconds(), 2)}`; }
  87.   // format date: yyyy-MM-dd
  88.   Date.prototype.$formatDate = function() { return `${this.getFullYear()}-${add0(this.getMonth() + 1, 2)}-${add0(this.getDate(), 2)}`; } 
  89.  
  90.   /**
  91.    * 根据 xpath 查询元素
  92.    * @param {String} xpath 
  93.    * @param {Boolean} queryOneElement 
  94.    */
  95.   w.$H2P = (xpath = 'body', queryOneElement = true) => queryOneElement ? document.querySelector(xpath) : Array.from(document.querySelectorAll(xpath));
  96. })(window);