type-bro

A js library for judging variable types.

CommonJS Module, ES6 Module

简体中文

Installation

• Download index.min.js to local and add in html:

<script src="/js/index.min.js">

• Or use CDN

<script src="https://cdn.jsdelivr.net/npm/type-bro@latest/index.min.js">

Usage

type.isArray([]); // true
type.isObject([]); // false

// or

const { isArray, isString } = type

isArray([]); // true
isString([]); // false

Method

is*

Method	Description	Parameter(value) type	The returned value
isArray(value)	Check if value is Array	Any	Boolean(true/false)
isBigInt(value)	Check if value is BigInt	Any	Boolean(true/false)
isBoolean(value)	Check if value is Boolean	Any	Boolean(true/false)
isFunction(value)	Check if value is Function	Any	Boolean(true/false)
isNull(value)	Check if value is null	Any	Boolean(true/false)
isNumber(value)	Check if value is Number	Any	Boolean(true/false)
isObject(value)	Check if value is Object	Any	Boolean(true/false)
isString(value)	Check if value is String	Any	Boolean(true/false)
isSymbol(value)	Check if value is Symbol	Any	Boolean(true/false)
isUndefined(value)	Check if value is undefined	Any	Boolean(true/false)
isAsyncFunction(value)	Check if value is Async Function	Any	Boolean(true/false)
isDecimal(value)	Check if value is Decimal	Any	Boolean(true/false)
isInfinity(value)	Check if value is Infinity	Any	Boolean(true/false)
isNan(value)	Check if value is NaN	Any	Boolean(true/false)
isNumeric(value)	Check if value is Number or String number	Any	Boolean(true/false)
isDate(value)	Check if value is Date	Any	Boolean(true/false)
isDom(value)	Check if value is Dom object	Any	Boolean(true/false)
isDOMException(value)	Check if value is DOMException	Any	Boolean(true/false)
isError(value)	Check if value is Error object	Any	Boolean(true/false)
isjQueryObj(value)	Check if value is jQuery object	Any	Boolean(true/false)
isMap(value)	Check if value is Map	Any	Boolean(true/false)
isPromise(value)	Check if value is Promise	Any	Boolean(true/false)
isRegExp(value)	Check if value is RegExp	Any	Boolean(true/false)
isSet(value)	Check if value is Set	Any	Boolean(true/false)
isWeakMap(value)	Check if value is WeakMap	Any	Boolean(true/false)
isWeakSet(value)	Check if value is WeakSet	Any	Boolean(true/false)
isPrototype(value)	Check if value is Prototype	Any	Boolean(true/false)
isURL(value)	Check if value is URL object. Note that object is not string!	Any	Boolean(true/false)

whichType(value)

Determine the type of parameter(value)

• Accepted parameter(value) type: Any
• Type of value returned: Object
  • typeof: Value is typeof value
  • prototype: The last bit type with value Object.prototype.toString.call(value)

Example:

type.whichType('');

/* return
{
  typeof: "string",
  prototype: "String"
}
*/

type.whichType(Promise.resolve());

/* return
{
  typeof: "object",
  prototype: "Promise"
}
*/