一批提升你工作效率的JS工具方法

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

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

5、是否字符串

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

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'
}

19、判斷是否是微信瀏覽器

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

20、判斷是否是移動端

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

21、判斷是否是QQ瀏覽器

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

22、判斷是否是爬蟲

export const isSpider = () => {
	const ua = navigator.userAgent.toLowerCase();
    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、判斷是否是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、判斷是否是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文件

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地址下載對應東西

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、判斷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、判斷是否滾動到頂部

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

34、判斷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、將數字轉爲大寫金額

export const changeToChinese = (Num) => {
    //判斷如果傳遞進來的不是字符的話轉換爲字符
    if (typeof Num == "number") {
        Num = new String(Num);
    };
    Num = Num.replace(/,/g, "") //替換tomoney()中的“,”
    Num = Num.replace(/ /g, "") //替換tomoney()中的空格
    Num = Num.replace(/￥/g, "") //替換掉可能出現的￥字符
    if (isNaN(Num)) { //驗證輸入的字符是否爲數字
        //alert("請檢查小寫金額是否正確");
        return "";
    };
    //字符處理完畢後開始轉換，採用前後兩部分分別轉換
    var part = String(Num).split(".");
    var newchar = "";
    //小數點前進行轉化
    for (var i = part[0].length - 1; i >= 0; i--) {
        if (part[0].length > 10) {
            return "";
            //若數量超過拾億單位，提示
        }
        var tmpnewchar = ""
        var perchar = part[0].charAt(i);
        switch (perchar) {
            case "0":
                tmpnewchar = "零" + tmpnewchar;
                break;
            case "1":
                tmpnewchar = "壹" + tmpnewchar;
                break;
            case "2":
                tmpnewchar = "貳" + tmpnewchar;
                break;
            case "3":
                tmpnewchar = "叄" + tmpnewchar;
                break;
            case "4":
                tmpnewchar = "肆" + tmpnewchar;
                break;
            case "5":
                tmpnewchar = "伍" + tmpnewchar;
                break;
            case "6":
                tmpnewchar = "陸" + tmpnewchar;
                break;
            case "7":
                tmpnewchar = "柒" + tmpnewchar;
                break;
            case "8":
                tmpnewchar = "捌" + tmpnewchar;
                break;
            case "9":
                tmpnewchar = "玖" + tmpnewchar;
                break;
        }
        switch (part[0].length - i - 1) {
            case 0:
                tmpnewchar = tmpnewchar + "元";
                break;
            case 1:
                if (perchar != 0) tmpnewchar = tmpnewchar + "拾";
                break;
            case 2:
                if (perchar != 0) tmpnewchar = tmpnewchar + "佰";
                break;
            case 3:
                if (perchar != 0) tmpnewchar = tmpnewchar + "仟";
                break;
            case 4:
                tmpnewchar = tmpnewchar + "萬";
                break;
            case 5:
                if (perchar != 0) tmpnewchar = tmpnewchar + "拾";
                break;
            case 6:
                if (perchar != 0) tmpnewchar = tmpnewchar + "佰";
                break;
            case 7:
                if (perchar != 0) tmpnewchar = tmpnewchar + "仟";
                break;
            case 8:
                tmpnewchar = tmpnewchar + "億";
                break;
            case 9:
                tmpnewchar = tmpnewchar + "拾";
                break;
        }
        var newchar = tmpnewchar + newchar;
    }
    //小數點之後進行轉化
    if (Num.indexOf(".") != -1) {
        if (part[1].length > 2) {
            // alert("小數點之後只能保留兩位,系統將自動截斷");
            part[1] = part[1].substr(0, 2)
        }
        for (i = 0; i < part[1].length; i++) {
            tmpnewchar = ""
            perchar = part[1].charAt(i)
            switch (perchar) {
                case "0":
                    tmpnewchar = "零" + tmpnewchar;
                    break;
                case "1":
                    tmpnewchar = "壹" + tmpnewchar;
                    break;
                case "2":
                    tmpnewchar = "貳" + tmpnewchar;
                    break;
                case "3":
                    tmpnewchar = "叄" + tmpnewchar;
                    break;
                case "4":
                    tmpnewchar = "肆" + tmpnewchar;
                    break;
                case "5":
                    tmpnewchar = "伍" + tmpnewchar;
                    break;
                case "6":
                    tmpnewchar = "陸" + tmpnewchar;
                    break;
                case "7":
                    tmpnewchar = "柒" + tmpnewchar;
                    break;
                case "8":
                    tmpnewchar = "捌" + tmpnewchar;
                    break;
                case "9":
                    tmpnewchar = "玖" + tmpnewchar;
                    break;
            }
            if (i == 0) tmpnewchar = tmpnewchar + "角";
            if (i == 1) tmpnewchar = tmpnewchar + "分";
            newchar = newchar + tmpnewchar;
        }
    }
    //替換所有無用漢字
    while (newchar.search("零零") != -1)
        newchar = newchar.replace("零零", "零");
    newchar = newchar.replace("零億", "億");
    newchar = newchar.replace("億萬", "億");
    newchar = newchar.replace("零萬", "萬");
    newchar = newchar.replace("零元", "元");
    newchar = newchar.replace("零角", "");
    newchar = newchar.replace("零分", "");
    if (newchar.charAt(newchar.length - 1) == "元") {
        newchar = newchar + "整"
    }
    return newchar;
}

38、判斷一個元素是否在數組中

export const contains = (arr, val) => {
    return arr.indexOf(val) != -1 ? true : false;
}

39、數組排序 {type} 1：從小到大 2：從大到小 3：隨機

export const sort = (arr, type = 1) => {
    return arr.sort((a, b) => {
        switch (type) {
            case 1:
                return a - b;
            case 2:
                return b - a;
            case 3:
                return Math.random() - 0.5;
            default:
                return arr;
        }
    })
}

40、數組去重

export const unique = (arr) => {
    if (Array.hasOwnProperty('from')) {
        return Array.from(new Set(arr));
    } else {
        var n = {}, r = [];
        for (var i = 0; i < arr.length; i++) {
            if (!n[arr[i]]) {
                n[arr[i]] = true;
                r.push(arr[i]);
            }
        }
        return r;
    }
}

41、求兩個集合的並集

export const union = (a, b) => {
    var newArr = a.concat(b);
    return this.unique(newArr);
}

42、求兩個集合的交集

export const intersect = (a, b) => {
    var _this = this;
    a = this.unique(a);
    return this.map(a, function (o) {
        return _this.contains(b, o) ? o : null;
    });
}

43、刪除其中某一個元素

export const remove = (arr, ele) => {
    var index = arr.indexOf(ele);
    if (index > -1) {
        arr.splice(index, 1);
    }
    return arr;
}

44、將類數組轉換爲數組

export const formArray = (ary) => {
    var arr = [];
    if (Array.isArray(ary)) {
        arr = ary;
    } else {
        arr = Array.prototype.slice.call(ary);
    };
    return arr;
}

45、去除空格 type: 1-所有空格 2-前後空格 3-前空格 4-後空格

export const trim = (str, type) => {
    type = type || 1
    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;
    }
}

46、在字符串中插入新的字符串

export const insertStr = (soure, index, newStr) => {
    var str = soure.slice(0, index) + newStr + soure.slice(index);
    return str;
}