JavaScript常用方法
来源：互联网 发布：股票模拟软件哪个好 编辑：程序博客网 时间：2024/05/21 18:48
点击正则简单介绍
金额处理成小数百分位￥20:00accurate(salary){ if (salary % 1 === 0) { return `${salary}.00`; } else if (/^(-?\d+)(\.\d{1})?$/.test(salary)) { return `${salary}0`; } else if (/^(-?\d+)(\.\d{2})?$/.test(salary)) { return salary; }},去掉首尾空格/** * 清除字符串两边的空字符 * @param str * @param isGlobal * @returns {string|*} */ trim: function(str, isGlobal){ let result; result = String(str).replace(/(^\s+)|(\s+$)/g, ""); if(isGlobal) { result = result.replace(/\s/g, ""); } return result; }, sortBy: function (filed, rev, primer) { rev = (rev) ? -1 : 1; return function (a, b) { a = a[filed]; b = b[filed]; if (typeof (primer) !== 'undefined') { a = primer(a); b = primer(b); } if (a < b) { return rev * -1; } if (a > b) { return rev * 1; } return 1; } }, /**首字母大写，第二个字母后全部小写**/ toCamelCase: function (string) { string = String(string).toLowerCase().replace(/-(.)/g, function(match, group1) { return group1.toUpperCase(); }); return this.ucfirst(string); }, ucfirst: function (string) { return string.replace(/(\w)/, function(v){return v.toUpperCase()}); }, /** * 时间格式 * @param date {Date} 时间 * @param format [String] 格式，默认为yyyy-MM-dd hh:mm:ss * @return {String} */ dateFormat: function(date, format){ if(this.isString(date)){ date = this.dateCreate(date); }else if(!this.isDate(date)){ return date; } let cfg = { yyyy : date.getFullYear() //年 : 4位 , yy : date.getFullYear().toString().substring(2)//年 : 2位 , M : date.getMonth() + 1 //月 : 如果1位的时候不补0 , MM : this.zeroPad(date.getMonth() + 1, 2) //月 : 如果1位的时候补0 , d : date.getDate() //日 : 如果1位的时候不补0 , dd : this.zeroPad(date.getDate(), 2)//日 : 如果1位的时候补0 , hh : this.zeroPad(date.getHours(), 2) //时 , mm : this.zeroPad(date.getMinutes(), 2) //分 , ss : this.zeroPad(date.getSeconds(), 2) //秒 , h : date.getHours() , m : date.getMinutes() , s : date.getSeconds() , W : date.getDay() }; format || (format = "yyyy-MM-dd hh:mm:ss"); return format.replace(/([a-z])(\1)*/ig, function(m){return cfg[m];}); }, getTimestamp: function(serverTimeString){ if(!serverTimeString)return 0; if(!this.isString(serverTimeString)){ serverTimeString = String(serverTimeString); } let m = serverTimeString.match(/Date\(([\d\-]+)\)/); if(m && m[1]){ return parseInt(m[1]); } return 0; }, /** * 时间比较 * @param objDate1 * @param objDate2 * @param interval y 年,q 季度,m 月,d 日,w 周,h 小时,n 分钟,s 秒,ms 毫秒 * @returns {*} */ dateDiff: function(objDate1, objDate2, interval){ let d = objDate1, i = {}, t = d.getTime(), t2 = objDate2.getTime(); i['y'] = objDate2.getFullYear() - d.getFullYear(); i['q'] = i['y'] * 4 + Math.floor(objDate2.getMonth() / 4) - Math.floor(d.getMonth() / 4); i['m'] = i['y'] * 12 + objDate2.getMonth() - d.getMonth(); i['ms'] = objDate2.getTime() - d.getTime(); i['w'] = Math.floor((t2 + 345600000) / (604800000)) - Math.floor((t + 345600000) / (604800000)); i['d'] = Math.floor(t2 / 86400000) - Math.floor(t / 86400000); i['h'] = Math.floor(t2 / 3600000) - Math.floor(t / 3600000); i['n'] = Math.floor(t2 / 60000) - Math.floor(t / 60000); i['s'] = Math.floor(t2 / 1000) - Math.floor(t / 1000); return i[interval]; }, /** * 零填充 * @param num * @param len 填充长度 * @returns {String} */ zeroPad: function(num, len){ num += ''; len -= num.length; for(let i=0;i<len;i++)num = '0'+num; return num; }, /** * 字符串重复 * @param str 源字符 * @param len 重复次数 * @returns {*} */ repeat: function(str, len){ if(len > 1){ let old = str; for(let i=1;i<len;i++)str += old; } return str; }, setUrlParameter: function(name, value, url){ function changeURLPar(url, ref, value) { let str = ""; if (url.indexOf('?') !== -1) str = url.substr(url.indexOf('?') + 1); else return url + (value!==null?("?" + ref + "=" + value):''); let returnurl = ""; let setparam = ""; let arr; let modify = "0"; if (str.indexOf('&') !== -1) { arr = str.split('&'); for (let i in arr) { if (arr[i].split('=')[0] === ref) { setparam = value; modify = "1"; } else { setparam = arr[i].split('=')[1]; } if(value !== null)returnurl = returnurl + arr[i].split('=')[0] + "=" + setparam + "&"; } returnurl = returnurl.substr(0, returnurl.length - 1); if (modify === "0") if (returnurl === str) returnurl = returnurl + "&" + ref + "=" + value; } else { if (str.indexOf('=') !== -1) { arr = str.split('='); if (arr[0] === ref) { setparam = value; modify = "1"; } else { setparam = arr[1]; } if(setparam!==null)returnurl = arr[0] + "=" + setparam; if (modify === "0" && returnurl === str && value !== null){ returnurl = returnurl + "&" + ref + "=" + value; } }else{ if(value !== null)returnurl = ref + "=" + value; } } return url.substr(0, url.indexOf('?')) + (String(returnurl).length?"?" + returnurl:''); } if(this.isObject(name)){ url = url || value || document.URL; for(let k in name){ url = changeURLPar(url || value || document.URL, k, name[k]); } return url; }else{ return changeURLPar(url || document.URL, name, value); } }, /** * 创建一个日期 * @param dateStr * @returns {Date} */ dateCreate: function(dateStr){ dateStr = dateStr.replace(/-/g, '/'); return new Date(dateStr); }, str_tags: function(html){ if(typeof html !== "string")return html; html = html.replace(/(<br>|<br\/>|<br \/>)/g, '\r\n'); html = html.replace(/<\/?[^>]*>/g, ''); return html; }, nl2br: function(str){ if(typeof str !== "string")return str; return str.replace(/\n/g, '<br>'); }, /** * 生成范围随机数 * @param start * @param end * @returns {*} */ random: function(start, end){ end = end || start + start; return Math.round(Math.random() * (end - start)) + start }, randomString: function(){ return Math.random().toString(36).substr(2); }, /** * 添加千分位符号 * @returns string * @param input */ formatThousandth: function (input) { let n = parseFloat(input).toFixed(2); let re = /(\d{1,3})(?=(\d{3})+(?:\.))/g; return n.replace(re, "$1,"); }, /** * 产生任意长度随机字母数字组合 * @param randomFlag 是否任意长度 * @param min 任意长度最小位[固定位数] * @param max 任意长度最大位 * @returns {string} */ randomWord: function randomWord(randomFlag, min, max){ let str = "", range = min, arr = ['0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z']; // 随机产生 if(randomFlag){ range = Math.round(Math.random() * (max-min)) + min; } for(let i=0; i<range; i++){ let pos = Math.round(Math.random() * (arr.length-1)); str += arr[pos]; } return str; }, /** * 创建全局临时函数 * @param {function} func * @returns {string} */ createTempFunction: function(func){ let key = 'temp_function_' + Math.random().toString(36).substr(2); window[key] = func; return key; }, /** * * @param {string} tmpName * @param {Array} [args] * @returns {boolean} */ callTempFunction: function(tmpName, args){ if(!window[tmpName])return false; let tmp = window[tmpName]; delete window[tmpName]; if(typeof tmp === "function"){ return tmp.call(window, args); } return null; }, /** * 严格模式 * 判断值是否在数组中 * @param v * @param arr * @returns {boolean} */ inArray: function(v, arr){ if (!this.isArray(arr))return false; for (let i = 0; i < arr.length; i++) { if (v === arr[i]) { return true; } } return false; }, /** * 判断值是否在数组中 * @param v * @param arr * @returns {boolean} */ in_array: function(v, arr){ if (!this.isArray(arr))return false; for (let i = 0; i < arr.length; i++) { if (v === arr[i]) { return true; } } return false; }, array_duplicate: function(arr, key){ let tmp = {}; for(let k in arr){ if(this.isString(arr[k])){ tmp[arr[k]] = arr[k]; }else{ tmp[arr[k][key]] = arr[k]; } } let tmp2 = []; for(let k in tmp){ tmp2.push(tmp[k]); } return tmp2; }, /* * JSON数组去重 * @param: [array] json Array * @param: [string] 唯一的key名，根据此键名进行去重 */ uniqueArray: function (array, key){ let result = [array[0]]; for(let i = 1; i < array.length; i++){ let item = array[i]; let repeat = false; for (let j = 0; j < result.length; j++) { if (item[key] === result[j][key]) { repeat = true; break; } } if (!repeat) { result.push(item); } } return result; }, cookie: { constructor: function cookie(key, value, options) { // key and at least value given, set cookie... if (arguments.length > 1 && (!/Object/.test(Object.prototype.toString.call(value)) || value === null || value === undefined)) { options = utils.extend({}, options); if (value === null || value === undefined) { options.expires = -1; } if (typeof options.expires === 'number') { let days = options.expires, t = options.expires = new Date(); t.setDate(t.getDate() + days); } value = String(value); return (document.cookie = [ encodeURIComponent(key), '=', options.raw ? value : encodeURIComponent(value), options.expires ? '; expires=' + options.expires.toUTCString() : '', // use expires attribute, max-age is not supported by IE options.path ? '; path=' + options.path : '', options.domain ? '; domain=' + options.domain : '', options.secure ? '; secure' : '' ].join('')); } // key and possibly options given, get cookie... options = value || {}; let decode = options.raw ? function(s) { return s; } : decodeURIComponent; let pairs = document.cookie.split('; '); for (let i = 0, pair; pair = pairs[i] && pairs[i].split('='); i++) { if (decode(pair[0]) === key) return decode(pair[1] || ''); // IE saves cookies with empty string as "c; ", e.g. without "=" as opposed to EOMB, thus pair[1] may be undefined } return null; }, get: function(name, defaults){ let data = this.constructor(name); if(!data)data = defaults; return data; }, set: function(name, value, path){ return this.constructor(name, value, {path: path || '/'}) } }};(function(){ ['String', 'Function', 'Date', 'Array', 'Boolean', 'Null', 'Number', 'Object'].forEach((v, i)=>{ utils['is' + v] = function (obj) { return Object.prototype.toString.call(obj) === '[object ' + v + ']'; } }) /** * 判断是否手机号码 * @param mobile * @returns {boolean} */ utils['isMobile'] = function (mobile) { mobile = mobile || ''; return !!mobile.match(/^(0|86|17951)?(13[0-9]|15[012356789]|17[678]|18[0-9]|14[57])[0-9]{8}$/); }})();(function(){ /** * 倒计时 * @param {Integer} i 计时总秒数 * @param {Function} callback 计时完成后回调 * @param {Function} t 每次倒数时回调 */ function Countdown(i, callback, t){ this.total = this.i = i; this.callback = callback; this.t = t; } Countdown.prototype = { out: function(){ let self = this; if(self.runing && self.i > 0){ self.i--; if(self.t){ self.t(self.i); } setTimeout(function(){ self.out.call(self); }, 1000); }else{ self.callback.call(self) } return self; }, start: function(){ this.runing = true; return this.out(); }, stop: function(){ this.i = this.total; this.runing = false; } }; utils.Countdown = Countdown;})();(function(){ /** * Storage * @type {{storage: Function, get: Function, set: Function}} * @return {*} */ function Storage(name, value, expired){ if(!name)return null; let storage = window.localStorage; let date = new Date(); let _watch = name; name = 'STORAGE_COMPANY_' + String(name).toLocaleUpperCase(); if(value === null){ //当值为空时删除 if(storage.hasOwnProperty(name)){ storage.removeItem(name); } Storage._execWatch(_watch, null) }else if(!value){ let item = storage.getItem(name); if(item){ item = JSON.parse(item); if(item.expired > 0 && item.expired - date.getTime() < 0){ storage.removeItem(name); Storage._execWatch(_watch, null); }else{ return item.value; } } }else{ let ret = storage.setItem(name, JSON.stringify({ value: value, expired: expired > 0 ? date.getTime() + expired * 1000 : 0 })); Storage._execWatch(_watch, value. ret); return ret; } return null; } Storage._watchers = {}; Storage._execWatch = function(prop, args){ let _watch = Storage._watchers[prop] || []; _watch.forEach((handler, i)=>{ if(handler && typeof handler === "function"){ handler(args); } }) }; utils.Storage = Storage; utils.Storage.watch = function(prop, handler) { Storage._watchers[prop] = Storage._watchers[prop] || []; Storage._watchers[prop].push(handler); }; utils.Storage.watchOne = function(prop, handler) { Storage._watchers[prop] && delete Storage._watchers[prop]; Storage._watchers[prop] = [handler]; }; utils.Storage.unwatch = function(prop, handler) { let _handlers = Storage._watchers[prop] || []; if(handler){ for(let i=0;i<_handlers.length;i++){ if(_handlers[i] === handler){ _handlers.slice(i, 1); } } Storage._watchers[prop] = _handlers; }else{ Storage._watchers[prop] = []; } }; utils.Storage.get = function(name, defaultValue){ let value = Storage(name); return value || defaultValue; }; /** * * @param {String} name * @param {*} value * @param {int} expired 过期时间 * @returns {*} */ utils.Storage.set = function(name, value, expired){ if(typeof value === "undefined")throw new Error("The value must be filled in, may be null!"); return Storage(name, value || null, expired || 0); };(function(){ let base64 = {}; base64.map = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/='; base64.decode = function(s){ s += ''; let len = s.length; if((len === 0) || (len % 4 !== 0)){ return s; } let pads = 0; if(s.charAt(len - 1) === base64.map[64]){ pads++; if(s.charAt(len - 2) === base64.map[64]){ pads++; } len -= 4; } let i, b, map = base64.map, x = []; for(i = 0; i < len; i += 4){ b = (map.indexOf(s.charAt(i)) << 18) | (map.indexOf(s.charAt(i + 1)) << 12) | (map.indexOf(s.charAt(i + 2)) << 6) | map.indexOf(s.charAt(i + 3)); x.push(String.fromCharCode(b >> 16, (b >> 8) & 0xff, b & 0xff)); } switch(pads){ case 1: b = (map.indexOf(s.charAt(i)) << 18) | (map.indexOf(s.charAt(i)) << 12) | (map.indexOf(s.charAt(i)) << 6); x.push(String.fromCharCode(b >> 16, (b >> 8) & 0xff)); break; case 2: b = (map.indexOf(s.charAt(i)) << 18) | (map.indexOf(s.charAt(i)) << 12); x.push(String.fromCharCode(b >> 16)); break; } return unescape(x.join('')); }; base64.encode = function(s){ if(!s){ return; } s += ''; if(s.length === 0){ return s; } s = escape(s); let i, b, x = [], map = base64.map, padchar = map[64]; let len = s.length - s.length % 3; for(i = 0; i < len; i += 3){ b = (s.charCodeAt(i) << 16) | (s.charCodeAt(i+1) << 8) | s.charCodeAt(i+2); x.push(map.charAt(b >> 18)); x.push(map.charAt((b >> 12) & 0x3f)); x.push(map.charAt((b >> 6) & 0x3f)); x.push(map.charAt(b & 0x3f)); } switch(s.length - len){ case 1: b = s.charCodeAt(i) << 16; x.push(map.charAt(b >> 18) + map.charAt((b >> 12) & 0x3f) + padchar + padchar); break; case 2: b = (s.charCodeAt(i) << 16) | (s.charCodeAt(i + 1) << 8); x.push(map.charAt(b >> 18) + map.charAt((b >> 12) & 0x3f) + map.charAt((b >> 6) & 0x3f) + padchar); break; } return x.join(''); }; utils.base64 = base64;})();(function(){ let key = 0x8912; function encrypt(str) { let m = []; str = String(str); for (let i = 0; i < str.length; i++) { let c = str.charCodeAt(i) ^ key; m.push(String.fromCharCode(c)); } return m.join(''); } function decrypt(str) { let m = []; str = String(str); for (let i = 0; i < str.length; i++) { let c = key ^ str.charCodeAt(i); m.push(String.fromCharCode(c)); } return m.join(''); } utils.encrypt = function(str){ return utils.base64.encode(encrypt(str)); }; utils.decrypt = function(str){ if(str && str.match(/^[a-zA-Z0-9=/+]+?$/)){ str = utils.base64.decode(str); } return decrypt(str); };})();//短网址(function(){ utils.getShortUrl = function(url, callback){ global.Dom7.ajax({ url: 'https://msurl.cn/short_url.jsonp?callback=', data: { url: url }, dataType: 'json', success: function(data){ if(data && !data.error){ if(callback)callback(data.url); }else{ if(callback)callback(url); } } }); }})();utils.clearStorage = function(prefix, exclude){ if(typeof window.localStorage === 'undefined')return; let excludes = ['STORAGE_COMPANY_MEMBER_INFO', 'STORAGE_COMPANY_SESSION_ID']; if(exclude){ excludes = excludes.concat(exclude) } for(let key in window.localStorage){ if(utils.inArray(key, excludes)){ continue; } if(prefix){ if (key.substr(0, prefix.length) === prefix) { window.localStorage.removeItem(key); } }else{ window.localStorage.removeItem(key); } }};快捷键
- 加粗
Ctrl + B - 斜体
Ctrl + I - 引用
Ctrl + Q - 插入链接
Ctrl + L - 插入代码
Ctrl + K - 插入图片
Ctrl + G - 提升标题
Ctrl + H - 有序列表
Ctrl + O - 无序列表
Ctrl + U - 横线
Ctrl + R - 撤销
Ctrl + Z - 重做
Ctrl + Y
阅读全文
0 0
- 常用Javascript方法收集
- javascript常用调试方法
- javascript 常用的方法
- javaScript常用方法收集
- javascript常用方法
- Javascript常用方法
- JavaScript常用验证方法
- javascript 常用方法
- javascript 常用的方法.....
- 常用javascript 方法
- 常用javascript方法
- JavaScript常用方法大全
- javascript数组常用方法
- javascript:自定义常用方法
- Javascript常用优化方法
- javascript常用方法
- javascript 常用跳转方法
- Javascript常用方法
- XMind 8如何更换语言设置
- Android透明状态栏
- 【翻译】【Ionic3】模态框介绍
- laravel vue控件通过axios向api发起请求，获取分页实例对象reponse.data.data
- 20171222Link
- JavaScript常用方法
- html 百度静态资源公共库
- Eclipse中找不到Servlet
- 双向链表的插入与删除
- MySQL基础（二）
- http://blog.csdn.net/csdnnews/article/details/78838714
- Java练习（5）——折半查找扩展（插入元素）
- 线程任务接口Callable使用void做为返回类型
- HAWQ安装PXF插件
