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前端常用的60余种工具方法
2020-06-02 10:49:43

作者：vipbic

https://segmentfault.com/a/1190000022736837


1.邮箱

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

2.手机号码

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

3.电话号码

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.是否数字

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.是否函数

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

9.是否为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.是否对象

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

12.是否数组

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

13.是否时间

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

14.是否正则

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

15.是否错误对象

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

16.是否Symbol函数

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

17.是否Promise对象

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

18.是否Set对象

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

19.是否是微信浏览器

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

20.是否是移动端

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

21.是否是QQ浏览器

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

22.是否是爬虫

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) {  //安卓手机
return false
    } else if (u.indexOf('iPhone') > -1) {//苹果手机
return true
    } else if (u.indexOf('iPad') > -1) {//iPad
return false
    } else if (u.indexOf('Windows Phone') > -1) {//winphone手机
return false
    } else {
return false
    }
}

24.是否为PC端

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

25.去除html标签

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

26.获取url参数

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.动态引入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')[];
    t.parentNode.insertBefore(s, t);
}

28.根据url地址下载

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是否包含某个class

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

30.el添加某个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去除某个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.获取滚动的坐标

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

33.滚动到顶部

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

34.el是否在视口范围内

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

35.洗牌算法随机

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

36.拦截粘贴板

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.判断类型集合

export const checkStr = (str, type) => {
switch (type) {
case 'phone':   //手机号码
return /^1[3|4|5|6|7|8|9][0-9]{9}$/.test(str);
case 'tel':     //座机
return /^(0\d{2,3}-\d{7,8})(-\d{1,4})?$/.test(str);
case 'card':    //身份证
return /(^\d{15}$)|(^\d{18}$)|(^\d{17}(\d|X|x)$)/.test(str);
case 'pwd':     //密码以字母开头，长度在6~18之间，只能包含字母、数字和下划线
return /^[a-zA-Z]\w{5,17}$/.test(str)
case 'postal':  //邮政编码
return /[1-9]\d{5}(?!\d)/.test(str);
case 'QQ':      //QQ号
return /^[1-9][0-9]{4,9}$/.test(str);
case 'email':   //邮箱
return /^[\w-]+(\.[\w-]+)*@[\w-]+(\.[\w-]+)+$/.test(str);
case 'money':   //金额(小数点2位)
return /^\d*(?:\.\d{0,2})?$/.test(str);
case 'URL':     //网址
return /(http|ftp|https):\/\/[\w\-_]+(\.[\w\-_]+)+([\w\-\.,@?^=%&:/~\+#]*[\w\-\@?^=%&/~\+#])?/.test(str)
case 'IP':      //IP
return /((?:(?:25[0-5]|2[0-4]\\d|[01]?\\d?\\d)\\.){3}(?:25[0-5]|2[0-4]\\d|[01]?\\d?\\d))/.test(str);
case 'date':    //日期时间
return /^(\d{4})\-(\d{2})\-(\d{2}) (\d{2})(?:\:\d{2}|:(\d{2}):(\d{2}))$/.test(str) || /^(\d{4})\-(\d{2})\-(\d{2})$/.test(str)
case 'number':  //数字
return /^[0-9]$/.test(str);
case 'english': //英文
return /^[a-zA-Z]+$/.test(str);
case 'chinese': //中文
return /^[\\u4E00-\\u9FA5]+$/.test(str);
case 'lower':   //小写
return /^[a-z]+$/.test(str);
case 'upper':   //大写
return /^[A-Z]+$/.test(str);
case 'HTML':    //HTML标记
return /<("[^"]*"|'[^']*'|[^'">])*>/.test(str);
default:
return true;
    }
}

38.严格的身份证校验

export const isCardID = (sId) => {
if (!/(^\d{15}$)|(^\d{17}(\d|X|x)$)/.test(sId)) {
console.log('你输入的身份证长度或格式错误')
return false
    }
//身份证城市
var aCity = { 11: "北京", 12: "天津", 13: "河北", 14: "山西", 15: "内蒙古", 21: "辽宁", 22: "吉林", 23: "黑龙江", 31: "上海", 32: "江苏", 33: "浙江", 34: "安徽", 35: "福建", 36: "江西", 37: "山东", 41: "河南", 42: "湖北", 43: "湖南", 44: "广东", 45: "广西", 46: "海南", 50: "重庆", 51: "四川", 52: "贵州", 53: "云南", 54: "西藏", 61: "陕西", 62: "甘肃", 63: "青海", 64: "宁夏", 65: "新疆", 71: "台湾", 81: "香港", 82: "澳门", 91: "国外" };
if (!aCity[parseInt(sId.substr(, 2))]) {
console.log('你的身份证地区非法')
return false
    }

// 出生日期验证
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('身份证上的出生日期非法')
return false
    }

// 身份证号码校验
var sum = ,
        weights = [7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2],
        codes = "10X98765432"
for (var i = ; i < sId.length - 1; i++) {
        sum += sId[i] * weights[i];
    }
var last = codes[sum % 11]; //计算出来的后一位身份证号码
if (sId[sId.length - 1] != last) {
console.log('你输入的身份证号非法')
return false
    }

return true
}

39.随机数范围

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

40.将阿拉伯数字翻译成中文的大写数字

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", "点", "");
var a = ("" + num).replace(/(^0*)/g, "").split("."),
        k = ,
        re = "";
for (var i = a[].length - 1; i >= ; i--) {
switch (k) {
case :
                re = BB[7] + re;
break;
case 4:
if (!new RegExp("0{4}//d{" + (a[].length - i - 1) + "}$")
                    .test(a[]))
                    re = BB[4] + re;
break;
case 8:
                re = BB[5] + re;
                BB[7] = BB[5];
                k = ;
break;
        }
if (k % 4 == 2 && a[].charAt(i + 2) !=  && a[].charAt(i + 1) == )
            re = AA[] + re;
if (a[].charAt(i) != )
            re = AA[a[].charAt(i)] + BB[k % 4] + re;
        k++;
    }

if (a.length > 1) // 加上小数部分(如果有小数部分)
    {
        re += BB[6];
for (var i = ; 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;
}

41.将数字转换为大写金额

export const changeToChinese = (Num) => {
//判断如果传递进来的不是字符的话转换为字符
if (typeof Num == "number") {
        Num = new String(Num);
    };
    Num = Num.replace(/,/g, "") //替换tomoney()中的“,”
    Num = Num.replace(/ /g, "") //替换tomoney()中的空格
    Num = Num.replace(/￥/g, "") //替换掉可能出现的￥字符
if (isNaN(Num)) { //验证输入的字符是否为数字
//alert("请检查小写金额是否正确");
return "";
    };
//字符处理完毕后开始转换，采用前后两部分分别转换
var part = String(Num).split(".");
var newchar = "";
//小数点前进行转化
for (var i = part[].length - 1; i >= ; i--) {
if (part[].length > 10) {
return "";
//若数量超过拾亿单位，提示
        }
var tmpnewchar = ""
var perchar = part[].charAt(i);
switch (perchar) {
case "0":
                tmpnewchar = "零" + tmpnewchar;
break;
case "1":
                tmpnewchar = "壹" + tmpnewchar;
break;
case "2":
                tmpnewchar = "贰" + tmpnewchar;
break;
case "3":
                tmpnewchar = "叁" + tmpnewchar;
break;
case "4":
                tmpnewchar = "肆" + tmpnewchar;
break;
case "5":
                tmpnewchar = "伍" + tmpnewchar;
break;
case "6":
                tmpnewchar = "陆" + tmpnewchar;
break;
case "7":
                tmpnewchar = "柒" + tmpnewchar;
break;
case "8":
                tmpnewchar = "捌" + tmpnewchar;
break;
case "9":
                tmpnewchar = "玖" + tmpnewchar;
break;
        }
switch (part[].length - i - 1) {
case :
                tmpnewchar = tmpnewchar + "元";
break;
case 1:
if (perchar != ) tmpnewchar = tmpnewchar + "拾";
break;
case 2:
if (perchar != ) tmpnewchar = tmpnewchar + "佰";
break;
case 3:
if (perchar != ) tmpnewchar = tmpnewchar + "仟";
break;
case 4:
                tmpnewchar = tmpnewchar + "万";
break;
case 5:
if (perchar != ) tmpnewchar = tmpnewchar + "拾";
break;
case 6:
if (perchar != ) tmpnewchar = tmpnewchar + "佰";
break;
case 7:
if (perchar != ) tmpnewchar = tmpnewchar + "仟";
break;
case 8:
                tmpnewchar = tmpnewchar + "亿";
break;
case 9:
                tmpnewchar = tmpnewchar + "拾";
break;
        }
var newchar = tmpnewchar + newchar;
    }
//小数点之后进行转化
if (Num.indexOf(".") != -1) {
if (part[1].length > 2) {
// alert("小数点之后只能保留两位,系统将自动截断");
            part[1] = part[1].substr(, 2)
        }
for (i = ; 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 = "贰" + tmpnewchar;
break;
case "3":
                    tmpnewchar = "叁" + tmpnewchar;
break;
case "4":
                    tmpnewchar = "肆" + tmpnewchar;
break;
case "5":
                    tmpnewchar = "伍" + tmpnewchar;
break;
case "6":
                    tmpnewchar = "陆" + tmpnewchar;
break;
case "7":
                    tmpnewchar = "柒" + tmpnewchar;
break;
case "8":
                    tmpnewchar = "捌" + tmpnewchar;
break;
case "9":
                    tmpnewchar = "玖" + tmpnewchar;
break;
            }
if (i == ) tmpnewchar = tmpnewchar + "角";
if (i == 1) tmpnewchar = tmpnewchar + "分";
            newchar = newchar + tmpnewchar;
        }
    }
//替换所有无用汉字
while (newchar.search("零零") != -1)
        newchar = newchar.replace("零零", "零");
    newchar = newchar.replace("零亿", "亿");
    newchar = newchar.replace("亿万", "亿");
    newchar = newchar.replace("零万", "万");
    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;
}

42.判断一个元素是否在数组中

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

43.数组排序，{type} 1：从小到大 2：从大到小 3：随机

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;
        }
    })
}

44.去重

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

45.求两个集合的并集

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

46.求两个集合的交集

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;
    });
}

47.删除其中一个元素

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

48.将类数组转换为数组

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

49.大值

export const max = (arr) => {
return Math.max.apply(null, arr);
}

50.小值

export const min = (arr) => {
return Math.min.apply(null, arr);
}

51.求和

export const sum = (arr) => {
return arr.reduce((pre, cur) => {
return pre + cur
    })
}

52.平均值

export const average = (arr) => {
return this.sum(arr) / arr.length
}

53.去除空格,type: 1-所有空格 2-前后空格 3-前空格 4-后空格

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;
    }
}

54.字符转换，type: 1:首字母大写 2：首字母小写 3：大小写转换 4：全部大写 5：全部小写

export const changeCase = (str, type) => {
    type = type || 4
switch (type) {
case 1:
return str.replace(/\b\w+\b/g, function (word) {
return word.substring(, 1).toUpperCase() + word.substring(1).toLowerCase();

            });
case 2:
return str.replace(/\b\w+\b/g, function (word) {
return word.substring(, 1).toLowerCase() + word.substring(1).toUpperCase();
            });
case 3:
return str.split('').map(function (word) {
if (/[a-z]/.test(word)) {
return word.toUpperCase();
                } else {
return word.toLowerCase()
                }
            }).join('')
case 4:
return str.toUpperCase();
case 5:
return str.toLowerCase();
default:
return str;
    }
}

55.检测密码强度

export const checkPwd = (str) => {
var Lv = ;
if (str.length < 6) {
return Lv
    }
if (/[0-9]/.test(str)) {
        Lv++
    }
if (/[a-z]/.test(str)) {
        Lv++
    }
if (/[A-Z]/.test(str)) {
        Lv++
    }
if (/[\.|-|_]/.test(str)) {
        Lv++
    }
return Lv;
}

56.函数节流器

export const debouncer = (fn, time, interval = 200) => {
if (time - (window.debounceTimestamp || ) > interval) {
        fn && fn();
window.debounceTimestamp = time;
    }
}

57.在字符串中插入新字符串

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

58.判断两个对象是否键值相同

export const isObjectEqual = (a, b) => {
var aProps = Object.getOwnPropertyNames(a);
var bProps = Object.getOwnPropertyNames(b);

if (aProps.length !== bProps.length) {
return false;
    }

for (var i = ; i < aProps.length; i++) {
var propName = aProps[i];

if (a[propName] !== b[propName]) {
return false;
        }
    }
return true;
}

59.16进制颜色转RGBRGBA字符串

export const colorToRGB = (val, opa) => {

var pattern = /^(#?)[a-fA-F0-9]{6}$/; //16进制颜色值校验规则
var isOpa = typeof opa == 'number'; //判断是否有设置不透明度

if (!pattern.test(val)) { //如果值不符合规则返回空字符
return '';
    }

var v = val.replace(/#/, ''); //如果有#号先去除#号
var rgbArr = [];
var rgbStr = '';

for (var i = ; i < 3; i++) {
var item = v.substring(i * 2, i * 2 + 2);
var num = parseInt(item, 16);
        rgbArr.push(num);
    }

    rgbStr = rgbArr.join();
    rgbStr = 'rgb' + (isOpa ? 'a' : '') + '(' + rgbStr + (isOpa ? ',' + opa : '') + ')';
return rgbStr;
}

60.追加url参数

export const appendQuery = (url, key, value) => {
var options = key;
if (typeof options == 'string') {
        options = {};
        options[key] = value;
    }
    options = $.param(options);
if (url.includes('?')) {
        url += '&' + options
    } else {
        url += '?' + options
    }
return url;
}

源码地址：https://github.com/hangjob/vue-admin/blob/master/src/utils/util.js 

欢迎指正或star🙌🙌



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创建时间：2020-05-21 10:18:21
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