前端常用60餘種工具方法（上）

1.郵箱

export const isEmail = (s) => {
    return /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+((.[a-zA-Z0-9_-]{2,3}){1,2})$/.test(s)
}

2.手機號碼

export const isMobile = (s) => {
    return /^1[0-9]{10}$/.test(s)
}

3.電話號碼

export const isPhone = (s) => {
    return /^([0-9]{3,4}-)?[0-9]{7,8}$/.test(s)
}

4.是否url地址

export const isURL = (s) => {
    return /^http[s]?:\/\/.*/.test(s)
}

5.是否字符串

export const isString = (o) => {
    return Object.prototype.toString.call(o).slice(8, -1) === 'String'
}

6.是否數字

export const isNumber = (o) => {
    return Object.prototype.toString.call(o).slice(8, -1) === 'Number'
}

7.是否boolean

export const isBoolean = (o) => {
    return Object.prototype.toString.call(o).slice(8, -1) === 'Boolean'
}

8.是否函數

export const isFunction = (o) => {
    return Object.prototype.toString.call(o).slice(8, -1) === 'Function'
}

9.是否爲null

export const isNull = (o) => {
    return Object.prototype.toString.call(o).slice(8, -1) === 'Null'
}

10.是否undefined

export const isUndefined = (o) => {
    return Object.prototype.toString.call(o).slice(8, -1) === 'Undefined'
}

11.是否對象

export const isObj = (o) => {
    return Object.prototype.toString.call(o).slice(8, -1) === 'Object'
}

12.是否數組

export const isArray = (o) => {
    return Object.prototype.toString.call(o).slice(8, -1) === 'Array'
}

13.是否時間

export const isDate = (o) => {
    return Object.prototype.toString.call(o).slice(8, -1) === 'Date'
}

14.是否正則

export const isRegExp = (o) => {
    return Object.prototype.toString.call(o).slice(8, -1) === 'RegExp'
}

15.是否錯誤對象

export const isError = (o) => {
    return Object.prototype.toString.call(o).slice(8, -1) === 'Error'
}

16.是否Symbol函數

export const isSymbol = (o) => {
    return Object.prototype.toString.call(o).slice(8, -1) === 'Symbol'
}

17.是否Promise對象

export const isPromise = (o) => {
    return Object.prototype.toString.call(o).slice(8, -1) === 'Promise'
}

18.是否Set對象

export const isSet = (o) => {
    return Object.prototype.toString.call(o).slice(8, -1) === 'Set'
}

export const ua = navigator.userAgent.toLowerCase();

19.是否是微信瀏覽器

export const isWeiXin = () => {
    return ua.match(/microMessenger/i) == 'micromessenger'
}

20.是否是移動端

export const isDeviceMobile = () => {
    return /android|webos|iphone|ipod|balckberry/i.test(ua)
}

21.是否是QQ瀏覽器

export const isQQBrowser = () => {
    return !!ua.match(/mqqbrowser|qzone|qqbrowser|qbwebviewtype/i)
}

22.是否是爬蟲

export const isSpider = () => {
    return /adsbot|googlebot|bingbot|msnbot|yandexbot|baidubot|robot|careerbot|seznambot|bot|baiduspider|jikespider|symantecspider|scannerlwebcrawler|crawler|360spider|sosospider|sogou web sprider|sogou orion spider/.test(ua)
}

23.是否ios

export const isIos = () => {
    var u = navigator.userAgent;
    if (u.indexOf('Android') > -1 || u.indexOf('Linux') > -1) {  //安卓手機
        return false
    } else if (u.indexOf('iPhone') > -1) {//蘋果手機
        return true
    } else if (u.indexOf('iPad') > -1) {//iPad
        return false
    } else if (u.indexOf('Windows Phone') > -1) {//winphone手機
        return false
    } else {
        return false
    }
}

24.是否爲PC端

export const isPC = () => {
    var userAgentInfo = navigator.userAgent;
    var Agents = ["Android", "iPhone",
        "SymbianOS", "Windows Phone",
        "iPad", "iPod"];
    var flag = true;
    for (var v = 0; v < Agents.length; v++) {
        if (userAgentInfo.indexOf(Agents[v]) > 0) {
            flag = false;
            break;
        }
    }
    return flag;
}

25.去除html標籤

export const removeHtmltag = (str) => {
    return str.replace(/<[^>]+>/g, '')
}

26.獲取url參數

export const getQueryString = (name) => {
    const reg = new RegExp('(^|&)' + name + '=([^&]*)(&|$)', 'i');
    const search = window.location.search.split('?')[1] || '';
    const r = search.match(reg) || [];
    return r[2];
}

27.動態引入js

export const injectScript = (src) => {
    const s = document.createElement('script');
    s.type = 'text/javascript';
    s.async = true;
    s.src = src;
    const t = document.getElementsByTagName('script')[0];
    t.parentNode.insertBefore(s, t);
}

28.根據url地址下載

export const download = (url) => {
    var isChrome = navigator.userAgent.toLowerCase().indexOf('chrome') > -1;
    var isSafari = navigator.userAgent.toLowerCase().indexOf('safari') > -1;
    if (isChrome || isSafari) {
        var link = document.createElement('a');
        link.href = url;
        if (link.download !== undefined) {
            var fileName = url.substring(url.lastIndexOf('/') + 1, url.length);
            link.download = fileName;
        }
        if (document.createEvent) {
            var e = document.createEvent('MouseEvents');
            e.initEvent('click', true, true);
            link.dispatchEvent(e);
            return true;
        }
    }
    if (url.indexOf('?') === -1) {
        url += '?download';
    }
    window.open(url, '_self');
    return true;
}

29.el是否包含某個class

export const hasClass = (el, className) => {
    let reg = new RegExp('(^|\\s)' + className + '(\\s|$)')
    return reg.test(el.className)
}

30.el添加某個class

export const addClass = (el, className) => {
    if (hasClass(el, className)) {
        return
    }
    let newClass = el.className.split(' ')
    newClass.push(className)
    el.className = newClass.join(' ')
}

31.el去除某個class

export const removeClass = (el, className) => {
    if (!hasClass(el, className)) {
        return
    }
    let reg = new RegExp('(^|\\s)' + className + '(\\s|$)', 'g')
    el.className = el.className.replace(reg, ' ')
}

32.獲取滾動的座標

export const getScrollPosition = (el = window) => ({
    x: el.pageXOffset !== undefined ? el.pageXOffset : el.scrollLeft,
    y: el.pageYOffset !== undefined ? el.pageYOffset : el.scrollTop
});

33.滾動到頂部

export const scrollToTop = () => {
    const c = document.documentElement.scrollTop || document.body.scrollTop;
    if (c > 0) {
        window.requestAnimationFrame(scrollToTop);
        window.scrollTo(0, c - c / 8);
    }
}

34.el是否在視口範圍內

export const elementIsVisibleInViewport = (el, partiallyVisible = false) => {
    const { top, left, bottom, right } = el.getBoundingClientRect();
    const { innerHeight, innerWidth } = window;
    return partiallyVisible
        ? ((top > 0 && top < innerHeight) || (bottom > 0 && bottom < innerHeight)) &&
        ((left > 0 && left < innerWidth) || (right > 0 && right < innerWidth))
        : top >= 0 && left >= 0 && bottom <= innerHeight && right <= innerWidth;
}

35.洗牌算法隨機

export const shuffle = (arr) => {
    var result = [],
        random;
    while (arr.length > 0) {
        random = Math.floor(Math.random() * arr.length);
        result.push(arr[random])
        arr.splice(random, 1)
    }
    return result;
}

36.劫持粘貼板

export const copyTextToClipboard = (value) => {
    var textArea = document.createElement("textarea");
    textArea.style.background = 'transparent';
    textArea.value = value;
    document.body.appendChild(textArea);
    textArea.select();
    try {
        var successful = document.execCommand('copy');
    } catch (err) {
        console.log('Oops, unable to copy');
    }
    document.body.removeChild(textArea);
}

37.判斷類型集合

export const checkStr = (str, type) => {
    switch (type) {
        case 'phone':   //手機號碼
            return /^1[3|4|5|6|7|8|9][0-9]{9}$/.test(str);
        case 'tel':     //座機
            return /^(0\d{2,3}-\d{7,8})(-\d{1,4})?$/.test(str);
        case 'card':    //身份證
            return /(^\d{15}$)|(^\d{18}$)|(^\d{17}(\d|X|x)$)/.test(str);
        case 'pwd':     //密碼以字母開頭，長度在6~18之間，只能包含字母、數字和下劃線
            return /^[a-zA-Z]\w{5,17}$/.test(str)
        case 'postal':  //郵政編碼
            return /[1-9]\d{5}(?!\d)/.test(str);
        case 'QQ':      //QQ號
            return /^[1-9][0-9]{4,9}$/.test(str);
        case 'email':   //郵箱
            return /^[\w-]+(\.[\w-]+)*@[\w-]+(\.[\w-]+)+$/.test(str);
        case 'money':   //金額(小數點2位)
            return /^\d*(?:\.\d{0,2})?$/.test(str);
        case 'URL':     //網址
            return /(http|ftp|https):\/\/[\w\-_]+(\.[\w\-_]+)+([\w\-\.,@?^=%&:/~\+#]*[\w\-\@?^=%&/~\+#])?/.test(str)
        case 'IP':      //IP
            return /((?:(?:25[0-5]|2[0-4]\\d|[01]?\\d?\\d)\\.){3}(?:25[0-5]|2[0-4]\\d|[01]?\\d?\\d))/.test(str);
        case 'date':    //日期時間
            return /^(\d{4})\-(\d{2})\-(\d{2}) (\d{2})(?:\:\d{2}|:(\d{2}):(\d{2}))$/.test(str) || /^(\d{4})\-(\d{2})\-(\d{2})$/.test(str)
        case 'number':  //數字
            return /^[0-9]$/.test(str);
        case 'english': //英文
            return /^[a-zA-Z]+$/.test(str);
        case 'chinese': //中文
            return /^[\\u4E00-\\u9FA5]+$/.test(str);
        case 'lower':   //小寫
            return /^[a-z]+$/.test(str);
        case 'upper':   //大寫
            return /^[A-Z]+$/.test(str);
        case 'HTML':    //HTML標記
            return /<("[^"]*"|'[^']*'|[^'">])*>/.test(str);
        default:
            return true;
    }
}

38.嚴格的身份證校驗

export const isCardID = (sId) => {
    if (!/(^\d{15}$)|(^\d{17}(\d|X|x)$)/.test(sId)) {
        console.log('你輸入的身份證長度或格式錯誤')
        return false
    }
    //身份證城市
    var aCity = { 11: "北京", 12: "天津", 13: "河北", 14: "山西", 15: "內蒙古", 21: "遼寧", 22: "吉林", 23: "黑龍江", 31: "上海", 32: "江蘇", 33: "浙江", 34: "安徽", 35: "福建", 36: "江西", 37: "山東", 41: "河南", 42: "湖北", 43: "湖南", 44: "廣東", 45: "廣西", 46: "海南", 50: "重慶", 51: "四川", 52: "貴州", 53: "雲南", 54: "西藏", 61: "陝西", 62: "甘肅", 63: "青海", 64: "寧夏", 65: "新疆", 71: "臺灣", 81: "香港", 82: "澳門", 91: "國外" };
    if (!aCity[parseInt(sId.substr(0, 2))]) {
        console.log('你的身份證地區非法')
        return false
    }

    // 出生日期驗證
    var sBirthday = (sId.substr(6, 4) + "-" + Number(sId.substr(10, 2)) + "-" + Number(sId.substr(12, 2))).replace(/-/g, "/"),
        d = new Date(sBirthday)
    if (sBirthday != (d.getFullYear() + "/" + (d.getMonth() + 1) + "/" + d.getDate())) {
        console.log('身份證上的出生日期非法')
        return false
    }

    // 身份證號碼校驗
    var sum = 0,
        weights = [7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2],
        codes = "10X98765432"
    for (var i = 0; i < sId.length - 1; i++) {
        sum += sId[i] * weights[i];
    }
    var last = codes[sum % 11]; //計算出來的最後一位身份證號碼
    if (sId[sId.length - 1] != last) {
        console.log('你輸入的身份證號非法')
        return false
    }

    return true
}

39.隨機數範圍

export const random = (min, max) => {
    if (arguments.length === 2) {
        return Math.floor(min + Math.random() * ((max + 1) - min))
    } else {
        return null;
    }
}

40.將阿拉伯數字翻譯成中文的大寫數字

export const numberToChinese = (num) => {
    var AA = new Array("零", "一", "二", "三", "四", "五", "六", "七", "八", "九", "十");
    var BB = new Array("", "十", "百", "仟", "萬", "億", "點", "");
    var a = ("" + num).replace(/(^0*)/g, "").split("."),
        k = 0,
        re = "";
    for (var i = a[0].length - 1; i >= 0; i--) {
        switch (k) {
            case 0:
                re = BB[7] + re;
                break;
            case 4:
                if (!new RegExp("0{4}//d{" + (a[0].length - i - 1) + "}$")
                    .test(a[0]))
                    re = BB[4] + re;
                break;
            case 8:
                re = BB[5] + re;
                BB[7] = BB[5];
                k = 0;
                break;
        }
        if (k % 4 == 2 && a[0].charAt(i + 2) != 0 && a[0].charAt(i + 1) == 0)
            re = AA[0] + re;
        if (a[0].charAt(i) != 0)
            re = AA[a[0].charAt(i)] + BB[k % 4] + re;
        k++;
    }

    if (a.length > 1) // 加上小數部分(如果有小數部分)
    {
        re += BB[6];
        for (var i = 0; i < a[1].length; i++)
            re += AA[a[1].charAt(i)];
    }
    if (re == '一十')
        re = "十";
    if (re.match(/^一/) && re.length == 3)
        re = re.replace("一", "");
    return re;
}

來源：思否  作者：vipbic

前端常用60餘種工具方法（下）

 

點擊這裏，瞭解更多精彩內容