Commonly used js function methods in the front end

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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