前端常用60余种工具方法-乐分享

作者：爱前端不爱恋爱
链接：https://zhuanlan.zhihu.com/p/143590337
来源：知乎
著作权归作者所有。商业转载请联系作者获得授权，非商业转载请注明出处。

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 = 0; v < Agents.length; v++) {
if (userAgentInfo.indexOf(Agents[v]) > 0) {
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')[0];
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 > 0) {
window.requestAnimationFrame(scrollToTop);
window.scrollTo(0, 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 > 0 && top < innerHeight) || (bottom > 0 && bottom < innerHeight)) &&
((left > 0 && left < innerWidth) || (right > 0 && right < innerWidth))
: top >= 0 && left >= 0 && bottom <= innerHeight && right <= innerWidth;
}

35.洗牌算法随机

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}$/.test(str);
case 'tel':     //座机
            return /^(0d{2,3}-d{7,8})(-d{1,4})?$/.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(0, 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

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前端常用60余种工具方法

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前端常用60余种工具方法

零基础开始学前端有什么建议？

JS初学者笔记 变量||语法||操作符

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