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jis

v1.0.36

Published

When you need validate the variable data type

Downloads

41

Readme

Jis

jis is a data type verifier for older browsers. Based in Object.prototype.toString.call

The library has some methods to check the data type.

Installation

npm install jis

You can install this library with npm or yarn. And you can add in devDependecies with

npm install jis --dev

Usage

Import in ES5 or higher
let jis = require('jis')
Import in TS
import jis from 'jis'

Methods

$array

jis.$array( [] ) // true

jis.$array( true ) //false
jis.$array( function() {} ) // false
jis.$array( null ) // false
jis.$array( 12 ) // false
jis.$array( {} ) // false
jis.$array( '' ) // false
jis.$array( undefined ) // false
$boolean

jis.$boolean( true ) // true
jis.$boolean( false ) // true

jis.$boolean( [] ) //false
jis.$boolean( function() {} ) // false

// ...
$function

jis.$function( function() {} ) // true

jis.$function( 12 ) // false
jis.$function( {} ) // false
jis.$function( '' ) // false

// ...
$null

jis.$null( null ) // true

jis.$null( {} ) // false
jis.$null( '' ) // false
jis.$null( undefined ) // false

// ...
$number

jis.$number( 12 ) // true

jis.$number( function() {} ) // false
jis.$number( null ) // false
jis.$number( undefined ) // false

// ...
$object

jis.$object( {} ) // true

jis.$object( [] ) // false
jis.$object( true ) //false
jis.$object( 12 ) // false

// ...
$string

jis.$string( 'Some text' ) // true

jis.$string( [] ) // false
jis.$string( true ) //false
jis.$string( undefined ) // false

// ...
$undefined

jis.$undefined( undefined ) // true

jis.$undefined( [] ) // false
jis.$undefined( {} ) // false
jis.$undefined( '' ) // false

// ...
$numeric

Check if the argument is a number or number string (including exponential)


jis.$numeric( 12 ) // true
jis.$numeric( '12' ) // true
jis.$numeric( '-12' ) // true
jis.$numeric( '+12' ) // true
jis.$numeric( '12.' ) // true
jis.$numeric( '12.e5' ) // true
jis.$numeric( '12.E5' ) // true
jis.$numeric( '12.E-5' ) // true
jis.$numeric( '-12.E-5' ) // true
jis.$numeric( '+12.E-5' ) // true

jis.$numeric( '12.E-' ) // false
jis.$numeric( 'A3B' ) // false
jis.$numeric( undefined ) // false
jis.$numeric( null ) // false
$primitive

Check if the argument is primitive type


jis.$primitive(undefined) // true
jis.$primitive(null) // true
jis.$primitive("something") // true
jis.$primitive(true) // true
jis.$primitive(false) // true
jis.$primitive(12) // true
jis.$primitive(Symbol()) // true

jis.$primitive({}) // false
jis.$primitive([]) // false
jis.$primitive(new Date()) // false
$empty

jis.$empty(null) // true
jis.$empty(undefined) // true
jis.$empty(false) // true
jis.$empty(0) // true
jis.$empty(0.0) // true
jis.$empty("") // true
jis.$empty("0") // true
jis.$empty([]) // true

jis.$empty(true) // false
jis.$empty(12) // false
jis.$empty(12.0) // false
jis.$empty("something") // false
jis.$empty("012") // false
jis.$empty([1, 2, 3]) // false
is

This method is the library core. Have more options.


jis.is( [], 'Array' ) // true
jis.is( false, 'Boolean' ) // true
jis.is( true, 'Boolean' ) // true
jis.is( function(){}, 'Function' ) // true
jis.is( null, 'Null' ) // true
jis.is( 12, 'Number' ) // true
jis.is( {}, 'Object' ) // true
jis.is( 'Text', 'String' ) // true
jis.is( undefined, 'Undefined' ) // true

let date = new Date();
jis.is(date, Date) // true

jis.is(/^$/g, RegExp) // true
jis.is(/^$/g, 'RegExp') // true

jis.is(12, 12) // true
jis.is(12, 13) // false

// ... experiment with this method :D