前端常用的js函數方法

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1.郵箱

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

2.手機號碼

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

3.電話號碼

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

4.是否url地址

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

5.是否字符串

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

6.是否數字

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

7.是否boolean

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

8.是否函數

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

9.是否為null

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

10.是否undefined

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

11.是否對象

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

12.是否數組

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

13.是否時間

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

14.是否正則

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

15.是否錯誤對象

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

16.是否Symbol函數

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

17.是否Promise對象

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

18.是否Set對象

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

到此這篇關於常用的js函數方法的文章就介紹到這瞭,更多相關常用的js函數內容請搜索WalkonNet以前的文章或繼續瀏覽下面的相關文章希望大傢以後多多支持WalkonNet！

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