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"
}
*/