序言
在他们日常生活合作开发的这时候，可能将会碰到各式各样的市场需求，但他们Sompuis可能将找不出最合适的配套措施去化解。书到用沙塘镇能越，上面的那些JavaScript的辅助工具表达式可能将就所派上用场了，他们能展开F83E43Se，提升我们的管理效率。
我把上面的方式都大体分了个类放到了我的GitHub上。他们能clone留下来间接采用，也能在须要加进时在里头去搜寻，充分运用ctrl+F
。
那个库房也会持预览的，假如里头没，但须要加进的辅助工具表达式，他们也能在issues明确提出来，没准就试试了他们哟~他们修完科学知识后雷西县随手再浏览Freemen App递送下个人简历，暂没noted的爸爸妈妈也能先囤下工作岗位，下跪诸位合作开发人员元老誊本指，让小编能管吻排骨。
二阶奇偶校验check辅助工具表达式
这儿的二阶表达式主要就参照了any-rule。
校正无法包涵拉丁字母
/** * @param { string } value */export const isNoWord = value => /^[^A-Za-z]*$/g.test(value);
校正中文和数字
/** * @param { string } value */export const isCHNAndEN = value => /^((?:[\u3400-\u4DB5\u4E00-\u9FEA\uFA0E\uFA0F\uFA11\uFA13\uFA14\uFA1F\uFA21\uFA23\uFA24\uFA27-\uFA29]|[\uD840-\uD868\uD86A-\uD86C\uD86F-\uD872\uD874-\uD879][\uDC00-\uDFFF]|\uD869[\uDC00-\uDED6\uDF00-\uDFFF]|\uD86D[\uDC00-\uDF34\uDF40-\uDFFF]|\uD86E[\uDC00-\uDC1D\uDC20-\uDFFF]|\uD873[\uDC00-\uDEA1\uDEB0-\uDFFF]|\uD87A[\uDC00-\uDFE0])|(\d))+$/g.test(value);
校正邮政编码(中国)
/** * @param { string } value */export const isPostcode = value => /^(0[1-7]|1[0-356]|2[0-7]|3[0-6]|4[0-7]|5[1-7]|6[1-7]|7[0-5]|8[013-6])\d{4}$/g.test(value);
校正微信号，6至20位，以拉丁字母开头，拉丁字母，数字，减号，下划线
/** * @param { string } value */export const isWeChatNum = value => /^[a-zA-Z][-_a-zA-Z0-9]{5,19}$/g.test(value);
校正16进制颜色
/** * @param { string } value */export const isColor16 = value => /^#?([a-fA-F0-9]{6}|[a-fA-F0-9]{3})$/g.test(value);
校正火车车次
/** * @param { string } value */export const isTrainNum = value => /^[GCDZTSPKXLY1-9]\d{1,4}$/g.test(value);
校正手机机身码(IMEI)
/** * @param { string } value */export const isIMEI = value => /^\d{15,17}$/g.test(value);
校正必须带端口号的网址(或ip)
/** * @param { string } value */export const isHttpAndPort = value => /^((ht|f)tps?:\/\/)?[\w-]+(\.[\w-]+)+:\d{1,5}\/?$/g.test(value);
校正网址(支持端口和”?+参数”和”#+参数)
/** * @param { string } value */export const isRightWebsite = value => /^(((ht|f)tps?):\/\/)?[\w-]+(\.[\w-]+)+([\w.,@?^=%&:/~+#-]*[\w@?^=%&/~+#-])?$/g.test(value);
校正统一社会信用代码
/** * @param { string } value */export const isCreditCode = value => /^[0-9A-HJ-NPQRTUWXY]{2}\d{6}[0-9A-HJ-NPQRTUWXY]{10}$/g.test(value);
校正迅雷链接
/** * @param { string } value */export const isThunderLink = value => /^thunderx?:\/\/[a-zA-Z\d]+=$/g.test(value);
校正ed2k链接(宽松匹配)
/** * @param { string } value */export const ised2k = value => /^ed2k:\/\/\|file\|.+\|\/$/g.test(value);
校正磁力链接(宽松匹配)
/** * @param { string } value */export const isMagnet = value => /^magnet:\?xt=urn:btih:[0-9a-fA-F]{40,}.*$/g.test(value);
校正子网掩码
/** * @param { string } value */export const isSubnetMask = value => /^(?:\d{1,2}|1\d\d|2[0-4]\d|25[0-5])(?:\.(?:\d{1,2}|1\d\d|2[0-4]\d|25[0-5])){3}$/g.test(value);
校正linux”文件夹”路径
/** * @param { string } value */export const isLinuxFolderPath = value => /^(\/[^/]+)+\/?$/g.test(value);
校正linux”文件”路径
/** * @param { string } value */export const isLinuxFilePath = value => /^(\/[^/]+)+$/g.test(value);
校正window”文件夹”路径
/** * @param { string } value */export const isWindowsFolderPath = value => /^[a-zA-Z]:\\(?:\w+\\?)*$/g.test(value);
校正window下”文件”路径
/** * @param { string } value */export const isWindowsFilePath = value => /^[a-zA-Z]:\\(?:\w+\\)*\w+\.\w+$/g.test(value);
校正股票代码(A股)
/** * @param { string } value */export const isAShare = value => /^(s[hz]|S[HZ])(000[\d]{3}|002[\d]{3}|300[\d]{3}|600[\d]{3}|60[\d]{4})$/g.test(value);
校正版本号格式必须为X.Y.Z
/** * @param { string } value */export const isVersion = value => /^\d+(?:\.\d+){2}$/g.test(value);
校正视频链接地址（视频格式可按需增删）
/** * @param { string } value */export const isVideoUrl = value => /^https?:\/\/(.+\/)+.+(\.(swf|avi|flv|mpg|rm|mov|wav|asf|3gp|mkv|rmvb|mp4))$/i.test(value);
校正图片链接地址（图片格式可按需增删）
/** * @param { string } value */export const isImageUrl = value => /^https?:\/\/(.+\/)+.+(\.(gif|png|jpg|jpeg|webp|svg|psd|bmp|tif))$/i.test(value);
校正银行卡号（10到30位, 覆盖对公/私账户, 参照微信支付）
/** * @param { string } value */export const isAccountNumber = value => /^[1-9]\d{9,29}$/g.test(value);
校正中文姓名
/** * @param { string } value */export const isChineseName = value => /^(?:[\u4e00-\u9fa5·]{2,16})$/g.test(value);
校正英文姓名
/** * @param { string } value */export const isEnglishName = value => /(^[a-zA-Z]{1}[a-zA-Z\s]{0,20}[a-zA-Z]{1}$)/g.test(value);
校正车牌号(新能源)
/** * @param { string } value */export const isLicensePlateNumberNER = value => /[京津沪渝冀豫云辽黑湘皖鲁新苏浙赣鄂桂甘晋蒙陕吉闽贵粤青藏川宁琼使领 A-Z]{1}[A-HJ-NP-Z]{1}(([0-9]{5}[DF])|([DF][A-HJ-NP-Z0-9][0-9]{4}))$/g.test(value);
校正车牌号(非新能源)
/** * @param { string } value */export const isLicensePlateNumberNNER = value => /^[京津沪渝冀豫云辽黑湘皖鲁新苏浙赣鄂桂甘晋蒙陕吉闽贵粤青藏川宁琼使领 A-Z]{1}[A-HJ-NP-Z]{1}[A-Z0-9]{4}[A-Z0-9挂学警港澳]{1}$/g.test(value);
校正车牌号(新能源+非新能源)
/** * @param { string } value */export const isLicensePlateNumber = value => /^(?:[京津沪渝冀豫云辽黑湘皖鲁新苏浙赣鄂桂甘晋蒙陕吉闽贵粤青藏川宁琼使领 A-Z]{1}[A-HJ-NP-Z]{1}(?:(?:[0-9]{5}[DF])|(?:[DF](?:[A-HJ-NP-Z0-9])[0-9]{4})))|(?:[京津沪渝冀豫云辽黑湘皖鲁新苏浙赣鄂桂甘晋蒙陕吉闽贵粤青藏川宁琼使领 A-Z]{1}[A-Z]{1}[A-HJ-NP-Z0-9]{4}[A-HJ-NP-Z0-9 挂学警港澳]{1})$/g.test(value);
校正手机号中国(严谨), 根据工信部2019年最新公布的手机号段
/** * @param { string } value */export const isMPStrict = value => /^(?:(?:\+|00)86)?1(?:(?:3[\d])|(?:4[5-7|9])|(?:5[0-3|5-9])|(?:6[5-7])|(?:7[0-8])|(?:8[\d])|(?:9[1|8|9]))\d{8}$/g.test(value);
校正手机号中国(宽松), 只要是13,14,15,16,17,18,19开头即可
/** * @param { string } value */export const isMPRelaxed = value => /^(?:(?:\+|00)86)?1[3-9]\d{9}$/g.test(value);
校正email(邮箱)
/** * @param { string } value */export const isEmail = value => /^[a-zA-Z0-9.!#$%&*+/=?^_`{|}~-]+@[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?(?:\.[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)*$/g.test(value);
校正座机电话(国内),如: 0341-86091234
/** * @param { string } value */export const isLandlineTelephone = value => /\d{3}-\d{8}|\d{4}-\d{7}/g.test(value);
校正身份证号(1代,15位数字)
/** * @param { string } value */export const isIDCardOld = value => /^\d{8}(0\d|10|11|12)([0-2]\d|30|31)\d{3}$/g.test(value);
校正身份证号(2代,18位数字),最后一位是奇偶校验位,可能将为数字或字符X
/** * @param { string } value */export const isIDCardNew = value => /^\d{6}(18|19|20)\d{2}(0\d|10|11|12)([0-2]\d|30|31)\d{3}[\dXx]$/g.test(value);
校正身份证号, 支持1/2代(15位/18位数字)
/** * @param { string } value */export const isIDCard = value => /(^\d{8}(0\d|10|11|12)([0-2]\d|30|31)\d{3}$)|(^\d{6}(18|19|20)\d{2}(0\d|10|11|12)([0-2]\d|30|31)\d{3}(\d|X|x)$)/g.test(value);
校正护照（包涵香港、澳门）
/** * @param { string } value */export const isPassport = value => /(^[EeKkGgDdSsPpHh]\d{8}$)|(^(([Ee][a-fA-F])|([DdSsPp][Ee])|([Kk][Jj])|([Mm][Aa])|(1[45]))\d{7}$)/g.test(value);
校正帐号是否合法(拉丁字母开头，允许5-16字节，允许拉丁字母数字下划线组合
/** * @param { string } value */export const isWebAccount = value => /^[a-zA-Z]\w{4,15}$/g.test(value);
校正中文/汉字
/** * @param { string } value */export const isChineseCharacter = value => /^(?:[\u3400-\u4DB5\u4E00-\u9FEA\uFA0E\uFA0F\uFA11\uFA13\uFA14\uFA1F\uFA21\uFA23\uFA24\uFA27-\uFA29]|[\uD840-\uD868\uD86A-\uD86C\uD86F-\uD872\uD874-\uD879][\uDC00-\uDFFF]|\uD869[\uDC00-\uDED6\uDF00-\uDFFF]|\uD86D[\uDC00-\uDF34\uDF40-\uDFFF]|\uD86E[\uDC00-\uDC1D\uDC20-\uDFFF]|\uD873[\uDC00-\uDEA1\uDEB0-\uDFFF]|\uD87A[\uDC00-\uDFE0])+$/g.test(value);
校正小数
/** * @param { string } value */export const isDecimal = value => /^\d+\.\d+$/g.test(value);
校正数字
/** * @param { string } value */export const isNumber = value => /^\d{1,}$/g.test(value);
校正qq号格式
/** * @param { string } value */export const isQQNum = value => /^[1-9][0-9]{4,10}$/g.test(value);
校正数字和拉丁字母组成
/** * @param { string } value */export const isNumAndStr = value => /^[A-Za-z0-9]+$/g.test(value);
校正英文拉丁字母
/** * @param { string } value */export const isEnglish = value => /^[a-zA-Z]+$/g.test(value);
校正大写英文拉丁字母
/** * @param { string } value */export const isCapital = value => /^[A-Z]+$/g.test(value);
校正小写英文拉丁字母
/** * @param { string } value */export const isLowercase = value => /^[a-z]+$/g.test(value);
浏览器操作相关browser辅助工具表达式
返回当前url
export const currentURL = () => window.location.href;
url参数（第一种）
/** * @param {*} name * @param {*} origin */export function getUrlParam(name, origin = null) { let reg = new RegExp(“(^|&)” + name + “=([^&]*)(&|$)”); let r = null; if (origin == null) { r = window.location.search.substr(1).match(reg); } else { r = origin.substr(1).match(reg); } if (r != null) return decodeURIComponent(r[2]); return null;}
/** * @param {*} name * @param {*} origin */export function getUrlParams(name, origin = null) { let url = location.href; let temp1 = url.split(?); let pram = temp1[1]; let keyValue = pram.split(&); let obj = {}; for (let i = 0; i < keyValue.length; i++) { let item = keyValue[i].split(=); let key = item[0]; let value = item[1]; obj[key] = value; } return obj[name];}
修改url中的参数
/** * @param { string } paramName * @param { string } replaceWith */export function replaceParamVal(paramName,replaceWith) { var oUrl = location.href.toString(); var re=eval(/(+ paramName+=)([^&]*)/gi); location.href = oUrl.replace(re,paramName+=+replaceWith); return location.href;}
删除url中指定的参数
/** * @param { string } name */export function funcUrlDel(name){ var loca =location; var baseUrl = loca.origin + loca.pathname + “?”; var query = loca.search.substr(1); if (query.indexOf(name)>-1) { var obj = {}; var arr = query.split(“&”); for (var i = 0; i < arr.length; i++) { arr[i] = arr[i].split(“=”); obj[arr[i][0]] = arr[i][1]; } delete obj[name]; var url = baseUrl + JSON.stringify(obj).replace(/[\”\{\}]/g,””).replace(/\:/g,”=”).replace(/\,/g,”&”); return url }}
export function getClientHeight() { let clientHeight = 0; if (document.body.clientHeight && document.documentElement.clientHeight) { clientHeight = (document.body.clientHeight < document.documentElement.clientHeight) ? document.body.clientHeight : document.documentElement.clientHeight; } else { clientHeight = (document.body.clientHeight > document.documentElement.clientHeight) ? document.body.clientHeight : document.documentElement.clientHeight; } return clientHeight;}
export function getPageViewWidth() { let d = document, a = d.compatMode == “BackCompat” ? d.body : d.documentElement; return a.clientWidth;}
export function getPageWidth() { let g = document, a = g.body, f = g.documentElement, d = g.compatMode == “BackCompat” ? a : g.documentElement; return Math.max(f.scrollWidth, a.scrollWidth, d.clientWidth);}
export function getViewportOffset() { if (window.innerWidth) { return { w: window.innerWidth, h: window.innerHeight } } else { // ie8及其以下 if (document.compatMode === “BackCompat”) { // 怪异模式 return { w: document.body.clientWidth, h: document.body.clientHeight } } else { // 标准模式 return { w: document.documentElement.clientWidth, h: document.documentElement.clientHeight } } }}
export function getPageScrollTop() { let a = document; return a.documentElement.scrollTop || a.body.scrollTop;}
export function getPageScrollLeft() { let a = document; return a.documentElement.scrollLeft || a.body.scrollLeft;}
开启全屏
/** * @param {*} element */export function launchFullscreen(element) { if (element.requestFullscreen) { element.requestFullscreen() } else if (element.mozRequestFullScreen) { element.mozRequestFullScreen() } else if (element.msRequestFullscreen) { element.msRequestFullscreen() } else if (element.webkitRequestFullscreen) { element.webkitRequestFullScreen() }}
关闭全屏
export function exitFullscreen() { if (document.exitFullscreen) { document.exitFullscreen() } else if (document.msExitFullscreen) { document.msExitFullscreen() } else if (document.mozCancelFullScreen) { document.mozCancelFullScreen() } else if (document.webkitExitFullscreen) { document.webkitExitFullscreen() }}
返回当前滚动条位置
export const getScrollPosition = (el = window) => ({ x: el.pageXOffset !== undefined ? el.pageXOffset : el.scrollLeft, y: el.pageYOffset !== undefined ? el.pageYOffset : el.scrollTop});
滚动到指定元素区域
export const smoothScroll = element =>{ document.querySelector(element).scrollIntoView({ behavior: smooth });};
平滑滚动到页面顶部
export const scrollToTop = () => { const c = document.documentElement.scrollTop || document.body.scrollTop; if (c > 0) { window.requestAnimationFrame(scrollToTop); window.scrollTo(0, c – c / 8); }};
http跳转https
export const httpsRedirect = () => { if (location.protocol !== https:) location.replace(https:// + location.href.split(//)[1]);};
检查页面底部是否可见
export const bottomVisible = () =>{ return document.documentElement.clientHeight + window.scrollY >= (document.documentElement.scrollHeight || document.documentElement.clientHeight);};
打开一个窗口
/** * @param { string } url * @param { string } windowName * @param { number } width * @param { number } height */export function openWindow(url, windowName, width, height) { var x = parseInt(screen.width / 2.0) – width / 2.0; var y = parseInt(screen.height / 2.0) – height / 2.0; var isMSIE = navigator.appName == “Microsoft Internet Explorer”; if (isMSIE) { var p = “resizable=1,location=no,scrollbars=no,width=”; p = p + width; p = p + “,height=”; p = p + height; p = p + “,left=”; p = p + x; p = p + “,top=”; p = p + y; window.open(url, windowName, p); } else { var win = window.open( url, “ZyiisPopup”, “top=” + y + “,left=” + x + “,scrollbars=” + scrollbars + “,dialog=yes,modal=yes,width=” + width + “,height=” + height + “,resizable=no” ); eval(“try { win.resizeTo(width, height); } catch(e) { }”); win.focus(); }}
自适应页面（rem）
/** * @param { number } width */export function AutoResponse(width = 750) { const target = document.documentElement; target.clientWidth >= 600 ? (target.style.fontSize = “80px”) : (target.style.fontSize = target.clientWidth / width * 100 + “px”);}
日期辅助工具date辅助工具表达式
能参照我的另一篇文章《前端的各种日期操作》，或者间接到我的GitHub查看
浏览器存储相关storage辅助工具表达式
主要就为浏览器存储方面的辅助工具表达式，大部分搬运自大神火狼1
localStorage 存贮
/** * 目前对象值假如是表达式 、RegExp等特殊对象存贮会被忽略 * @param { String } key 属性 * @param { string } value 值 */export const localStorageSet = (key, value) => { if (typeof (value) === object) value = JSON.stringify(value); localStorage.setItem(key, value)};
/** * @param {String} key 属性 */export const localStorageGet = (key) => { return localStorage.getItem(key)};
localStorage 移除
/** * @param {String} key 属性 */export const localStorageRemove = (key) => { localStorage.removeItem(key)};
localStorage 存贮某一段时间失效
/** * @param {String} key 属性 * @param {*} value 存贮值 * @param { number } expire 过期时间,毫秒数 */export const localStorageSetExpire = (key, value, expire) => { if (typeof (value) === object) value = JSON.stringify(value); localStorage.setItem(key, value); setTimeout(() => { localStorage.removeItem(key) }, expire)};
sessionStorage 存贮
/** * @param {String} key 属性 * @param {*} value 值 */export const sessionStorageSet = (key, value) => { if (typeof (value) === object) value = JSON.stringify(value); sessionStorage.setItem(key, value)};
/** * @param {String} key 属性 */export const sessionStorageGet = (key) => { return sessionStorage.getItem(key)};
sessionStorage 删除
/** * @param {String} key 属性 */export const sessionStorageRemove = (key) => { sessionStorage.removeItem(key)};
sessionStorage 存贮某一段时间失效
/** * @param {String} key 属性 * @param {*} value 存贮值 * @param {String} expire 过期时间,毫秒数 */export const sessionStorageSetExpire = (key, value, expire) => { if (typeof (value) === object) value = JSON.stringify(value); sessionStorage.setItem(key, value); setTimeout(() => { sessionStorage.removeItem(key) }, expire)};
cookie 存贮
/** * @param {String} key 属性 * @param {*} value 值 * @param { String } expire 过期时间,单位天 */export const cookieSet = (key, value, expire) => { const d = new Date(); d.setDate(d.getDate() + expire); document.cookie = `${key}=${value};expires=${d.toUTCString()}`};
coo
/** * @param {String} key 属性 */export const cookieGet = (key) => { const cookieStr = unescape(document.cookie); const arr = cookieStr.split(; ); let cookieValue = ; for (let i = 0; i < arr.length; i++) { const temp = arr[i].split(=); if (temp[0] === key) { cookieValue = temp[1]; break } } return cookieValue};
cookie 删除
/** * @param {String} key 属性 */export const cookieRemove = (key) => { document.cookie = `${encodeURIComponent(key)}=;expires=${new Date()}`};
更多的辅助工具表达式
这儿包涵了平时可能将常用的辅助工具表达式，包涵数字，字符串，数组和对象等等操作。
金钱格式化，三位加逗号
/** * @param { number } num */export const formatMoney = num => num.toString().replace(/\B(?=(\d{3})+(?!\d))/g, “,”);
截取字符串并加身略号
export function subText(str, length) { if (str.length === 0) { return ; } if (str.length > length) { return str.substr(0, length) + “…”; } else { return str; }}
/** * @param file * @param format 指定文件格式 * @param size 指定文件大小(字节) * @param formatMsg 格式错误提示 * @param sizeMsg 大小超出限制提示 * @returns {Promise<any>} */export function fileToBase64String(file, format = [jpg, jpeg, png, gif], size = 20 * 1024 * 1024, formatMsg = 文件格式不正确, sizeMsg = 文件大小超出限制) { return new Promise((resolve, reject) => { // 格式过滤 let suffix = file.type.split(/)[1].toLowerCase(); let inFormat = false; for (let i = 0; i < format.length; i++) { if (suffix === format[i]) { inFormat = true; break; } } if (!inFormat) { reject(formatMsg); } // 大小过滤 if (file.size > size) { reject(sizeMsg); } // 转base64字符串 let fileReader = new FileReader(); fileReader.readAsDataURL(file); fileReader.onload = () => { let res = fileReader.result; resolve({base64String: res, suffix: suffix}); reject(异常文件，请重新选择); } })}
B转换到KB,MB,GB并保留两位小数
/** * @param { number } fileSize */export function formatFileSize(fileSize) { let temp; if (fileSize < 1024) { return fileSize + B; } else if (fileSize < (1024 * 1024)) { temp = fileSize / 1024; temp = temp.toFixed(2); return temp + KB; } else if (fileSize < (1024 * 1024 * 1024)) { temp = fileSize / (1024 * 1024); temp = temp.toFixed(2); return temp + MB; } else { temp = fileSize / (1024 * 1024 * 1024); temp = temp.toFixed(2); return temp + GB; }}
base64转file
/** * @param { base64 } base64 * @param { string } filename 转换后的文件名 */export const base64ToFile = (base64, filename )=> { let arr = base64.split(,); let mime = arr[0].match(/:(.*?);/)[1]; let suffix = mime.split(/)[1] ;// 图片后缀 let bstr = atob(arr[1]); let n = bstr.length; let u8arr = new Uint8Array(n); while (n–) { u8arr[n] = bstr.charCodeAt(n) } return new File([u8arr], `${filename}.${suffix}`, { type: mime })};
base64转blob
/** * @param { base64 } base64 */export const base64ToBlob = base64 => { let arr = base64.split(,), mime = arr[0].match(/:(.*?);/)[1], bstr = atob(arr[1]), n = bstr.length, u8arr = new Uint8Array(n); while (n–) { u8arr[n] = bstr.charCodeAt(n); } return new Blob([u8arr], { type: mime });};
blob转file
/** * @param { blob } blob * @param { string } fileName */export const blobToFile = (blob, fileName) => { blob.lastModifiedDate = new Date(); blob.name = fileName; return blob;};
file转base64
/** * @param { * } file 图片文件 */export const fileToBase64 = file => { let reader = new FileReader(); reader.readAsDataURL(file); reader.onload = function (e) { return e.target.result };};
递归生成树形结构
export function getTreeData(data, pid, pidName = parentId, idName = id, childrenName = children, key) { let arr = []; for (let i = 0; i < data.length; i++) { if (data[i][pidName] == pid) { data[i].key = data[i][idName]; data[i][childrenName] = getTreeData(data, data[i][idName], pidName, idName, childrenName); arr.push(data[i]); } } return arr;}
遍历树节点
export function foreachTree(data, childrenName = children, callback) { for (let i = 0; i < data.length; i++) { callback(data[i]); if (data[i][childrenName] && data[i][childrenName].length > 0) { foreachTree(data[i][childrenName], childrenName, callback); } }}
追溯父节点
export function traceParentNode(pid, data, rootPid, pidName = parentId, idName = id, childrenName = children) { let arr = []; foreachTree(data, childrenName, (node) => { if (node[idName] == pid) { arr.push(node); if (node[pidName] != rootPid) { arr = arr.concat(traceParentNode(node[pidName], data, rootPid, pidName, idName)); } } }); return arr; }
寻找所有子节点
export function traceChildNode(id, data, pidName = parentId, idName = id, childrenName = children) { let arr = []; foreachTree(data, childrenName, (node) => { if (node[pidName] == id) { arr.push(node); arr = arr.concat(traceChildNode(node[idName], data, pidName, idName, childrenName)); } }); return arr;}
根据pid生成树形结构
port const createTree = (items, id = null, link = pid) =>{ items.filter(item => item[link] === id).map(item => ({ …item, children: createTree(items, item.id) }));};
查询数组中是否存在某个元素并返回元素第一次出现的下标
/** * @param {*} item * @param { array } data */export function inArray(item, data) { for (let i = 0; i < data.length; i++) { if (item === data[i]) { return i; } } return -1;}
Windows根据详细版本号判断当前系统名称
/** * @param { string } osVersion */export function OutOsName(osVersion) { if(!osVersion){ return } let str = osVersion.substr(0, 3); if (str === “5.0”) { return “Win 2000” } else if (str === “5.1”) { return “Win XP” } else if (str === “5.2”) { return “Win XP64” } else if (str === “6.0”) { return “Win Vista” } else if (str === “6.1”) { return “Win 7” } else if (str === “6.2”) { return “Win 8” } else if (str === “6.3”) { return “Win 8.1” } else if (str === “10.”) { return “Win 10” } else { return “Win” }}
判断手机是Andoird还是IOS
/** * 0: ios * 1: android * 2: 其它 */export function getOSType() { let u = navigator.userAgent, app = navigator.appVersion; let isAndroid = u.indexOf(Android) > -1 || u.indexOf(Linux) > -1; let isIOS = !!u.match(/\(i[^;]+;( U;)? CPU.+Mac OS X/); if (isIOS) { return 0; } if (isAndroid) { return 1; } return 2;}
表达式防抖
/** * @param { function } func * @param { number } wait 延迟执行毫秒数 * @param { boolean } immediate true 表立即执行，false 表非立即执行 */export function debounce(func,wait,immediate) { let timeout; return function () { let context = this; let args = arguments; if (timeout) clearTimeout(timeout); if (immediate) { let callNow = !timeout; timeout = setTimeout(() => { timeout = null; }, wait); if (callNow) func.apply(context, args) } else { timeout = setTimeout(() => { func.apply(context, args) }, wait); } }}
表达式节流
/** * @param { function } func 表达式 * @param { number } wait 延迟执行毫秒数 * @param { number } type 1 表时间戳版，2 表定时器版 */export function throttle(func, wait ,type) { let previous, timeout; if(type===1){ previous = 0; }else if(type===2){ timeout = null; } return function() { let context = this; let args = arguments; if(type===1){ let now = Date.now(); if (now – previous > wait) { func.apply(context, args); previous = now; } }else if(type===2){ if (!timeout) { timeout = setTimeout(() => { timeout = null; func.apply(context, args) }, wait) } } }}
判断数据类型
/** * @param {*} target */export function type(target) { let ret = typeof(target); let template = { “[object Array]”: “array”, “[object Object]”:”object”, “[object Number]”:”number – object”, “[object Boolean]”:”boolean – object”, “[object String]”:string-object }; if(target === null) { return null; }else if(ret == “object”){ let str = Object.prototype.toString.call(target); return template[str]; }else{ return ret; }}
生成指定范围随机数
/** * @param { number } min * @param { number } max */export const RandomNum = (min, max) => Math.floor(Math.random() * (max – min + 1)) + min;
数组乱序
/** * @param {array} arr */export function arrScrambling(arr) { let array = arr; let index = array.length; while (index) { index -= 1; let randomIndex = Math.floor(Math.random() * index); let middleware = array[index]; array[index] = array[randomIndex]; array[randomIndex] = middleware } return array}
数组交集
/** * @param { array} arr1 * @param { array } arr2 */export const similarity = (arr1, arr2) => arr1.filter(v => arr2.includes(v));
数组中某元素出现的次数
/** * @param { array } arr * @param {*} value */export function countOccurrences(arr, value) { return arr.reduce((a, v) => v === value ? a + 1 : a + 0, 0);}
加法表达式（精度丢失问题）
/** * @param { number } arg1 * @param { number } arg2 */export function add(arg1, arg2) { let r1, r2, m; try { r1 = arg1.toString().split(“.”)[1].length } catch (e) { r1 = 0 } try { r2 = arg2.toString().split(“.”)[1].length } catch (e) { r2 = 0 } m = Math.pow(10, Math.max(r1, r2)); return (arg1 * m + arg2 * m) / m}
减法表达式（精度丢失问题）
/** * @param { number } arg1 * @param { number } arg2 */export function sub(arg1, arg2) { let r1, r2, m, n; try { r1 = arg1.toString().split(“.”)[1].length } catch (e) { r1 = 0 } try { r2 = arg2.toString().split(“.”)[1].length } catch (e) { r2 = 0 } m = Math.pow(10, Math.max(r1, r2)); n = (r1 >= r2) ? r1 : r2; return Number(((arg1 * m – arg2 * m) / m).toFixed(n));}
除法表达式（精度丢失问题）
/** * @param { number } num1 * @param { number } num2 */export function division(num1,num2){ let t1,t2,r1,r2; try{ t1 = num1.toString().split(.)[1].length; }catch(e){ t1 = 0; } try{ t2=num2.toString().split(“.”)[1].length; }catch(e){ t2=0; } r1=Number(num1.toString().replace(“.”,””)); r2=Number(num2.toString().replace(“.”,””)); return (r1/r2)*Math.pow(10,t2-t1);}
乘法表达式（精度丢失问题）
/** * @param { number } num1 * @param { number } num2 */export function mcl(num1,num2){ let m=0,s1=num1.toString(),s2=num2.toString(); try{m+=s1.split(“.”)[1].length}catch(e){} try{m+=s2.split(“.”)[1].length}catch(e){} return Number(s1.replace(“.”,””))*Number(s2.replace(“.”,””))/Math.pow(10,m);}
递归优化（尾递归）
/** * @param { function } f */export function tco(f) { let value; let active = false; let accumulated = []; return function accumulator() { accumulated.push(arguments); if (!active) { active = true; while (accumulated.length) { value = f.apply(this, accumulated.shift()); } active = false; return value; } };}
生成随机整数
export function randomNumInteger(min, max) { switch (arguments.length) { case 1: return parseInt(Math.random() * min + 1, 10); case 2: return parseInt(Math.random() * (max – min + 1) + min, 10); default: return 0 }}
去除空格
/** * @param { string } str 待处理字符串 * @param { number } type 去除空格类型 1-所有空格 2-前后空格 3-前空格 4-后空格 默认为1 */export function trim(str, type = 1) { if (type && type !== 1 && type !== 2 && type !== 3 && type !== 4) return; switch (type) { case 1: return str.replace(/\s/g, “”); case 2: return str.replace(/(^\s)|(\s*$)/g, “”); case 3: return str.replace(/(^\s)/g, “”); case 4: return str.replace(/(\s$)/g, “”); default: return str; }}
大小写转换
/** * @param { string } str 待转换的字符串 * @param { number } type 1-全大写 2-全小写 3-首拉丁字母大写 其他-不转换 */export function turnCase(str, type) { switch (type) { case 1: return str.toUpperCase(); case 2: return str.toLowerCase(); case 3: return str[0].toUpperCase() + str.substr(1).toLowerCase(); default: return str; }}
随机16进制颜色 hexColor
/** * 方式一 */export function hexColor() { let str = #; let arr = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, F]; for (let i = 0; i < 6; i++) { let index = Number.parseInt((Math.random() * 16).toString()); str += arr[index] } return str;}
随机16进制颜色 randomHexColorCode
/** * 方式二 */export const randomHexColorCode = () => { let n = (Math.random() * 0xfffff * 1000000).toString(16); return # + n.slice(0, 6);};
转义html(防XSS攻击)
export const escapeHTML = str =>{ str.replace( /[&<>”]/g, tag => ({ &: &, <: <, >: >, “”: , “: ” }[tag] || tag) );};
检测移动/PC设备
export const detectDeviceType = () => { return/Android|webOS|iPhone|iPad|iPod|BlackBerry|IEMobile|Opera Mini/i.test(navigator.userAgent) ? Mobile : Desktop; };
隐藏所有指定标签
/** * 例: hide(document.querySelectorAll(img)) */export const hideTag = (…el) => […el].forEach(e => (e.style.display = none));
返回指定元素的生效样式
/** * @param { element} el 元素节点 * @param { string } ruleName 指定元素的名称 */export const getStyle = (el, ruleName) => getComputedStyle(el)[ruleName];
检查是否包涵子元素
/** * @param { element } parent * @param { element } child * 例：elementContains(document.querySelector(head), document.querySelector(title)); // true */export const elementContains = (parent, child) => parent !== child && parent.contains(child);
数字超过规定大小加上加号“+”，如数字超过99显示99+
/** * @param { number } val 输入的数字 * @param { number } maxNum 数字规定界限 */export const outOfNum = (val, maxNum) =>{ val = val ? val-0 :0; if (val > maxNum ) { return `${maxNum}+` }else{ return val; }};
未完待续…
最后
上面的辅助工具表达式，一部分来自于他们平时的总结，一部分来自于上面的参照文章,，感谢大神们的总结。假如对你有帮助，为了方便查阅，不妨在GitHub上点个star~
那个库房会持续预览，假如你有更好的点子，或者没找到你想要的辅助工具表达式，欢迎issues~
文中若有不准确或错误的地方，欢迎指出，更欢迎issues~
原作者姓名： xmanlin
原出处：segmentfault举报/反馈
