121 lines
2.1 KiB
Markdown
121 lines
2.1 KiB
Markdown
|
<!--
|
||
|
|
|
||
|
|
@license Apache-2.0
|
||
|
|
|
||
|
|
Copyright (c) 2018 The Stdlib Authors.
|
||
|
|
|
||
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
||
|
|
you may not use this file except in compliance with the License.
|
||
|
|
You may obtain a copy of the License at
|
||
|
|
|
||
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
||
|
|
|
||
|
|
Unless required by applicable law or agreed to in writing, software
|
||
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
||
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||
|
|
See the License for the specific language governing permissions and
|
||
|
|
limitations under the License.
|
||
|
|
|
||
|
|
-->
|
||
|
|
|
||
|
|
# isBoolean
|
||
|
|
|
||
|
|
> Test if a value is a boolean.
|
||
|
|
|
||
|
|
<section class="usage">
|
||
|
|
|
||
|
|
### Usage
|
||
|
|
|
||
|
|
```javascript
|
||
|
|
var isBoolean = require( '@stdlib/assert/is-boolean' );
|
||
|
|
```
|
||
|
|
|
||
|
|
#### isBoolean( value )
|
||
|
|
|
||
|
|
Tests if a `value` is a `boolean`.
|
||
|
|
|
||
|
|
<!-- eslint-disable no-new-wrappers -->
|
||
|
|
|
||
|
|
```javascript
|
||
|
|
var bool = isBoolean( false );
|
||
|
|
// returns true
|
||
|
|
|
||
|
|
bool = isBoolean( true );
|
||
|
|
// returns true
|
||
|
|
|
||
|
|
bool = isBoolean( new Boolean( false ) );
|
||
|
|
// returns true
|
||
|
|
|
||
|
|
bool = isBoolean( new Boolean( true ) );
|
||
|
|
// returns true
|
||
|
|
```
|
||
|
|
|
||
|
|
#### isBoolean.isPrimitive( value )
|
||
|
|
|
||
|
|
Tests if a `value` is a primitive `boolean`.
|
||
|
|
|
||
|
|
<!-- eslint-disable no-new-wrappers -->
|
||
|
|
|
||
|
|
```javascript
|
||
|
|
var bool = isBoolean.isPrimitive( true );
|
||
|
|
// returns true
|
||
|
|
|
||
|
|
bool = isBoolean.isPrimitive( false );
|
||
|
|
// returns true
|
||
|
|
|
||
|
|
bool = isBoolean.isPrimitive( new Boolean( true ) );
|
||
|
|
// returns false
|
||
|
|
```
|
||
|
|
|
||
|
|
#### isBoolean.isObject( value )
|
||
|
|
|
||
|
|
Tests if a `value` is a `Boolean` object.
|
||
|
|
|
||
|
|
<!-- eslint-disable no-new-wrappers -->
|
||
|
|
|
||
|
|
```javascript
|
||
|
|
var bool = isBoolean.isObject( true );
|
||
|
|
// returns false
|
||
|
|
|
||
|
|
bool = isBoolean.isObject( new Boolean( false ) );
|
||
|
|
// returns true
|
||
|
|
```
|
||
|
|
|
||
|
|
</section>
|
||
|
|
|
||
|
|
<!-- /.usage -->
|
||
|
|
|
||
|
|
<section class="examples">
|
||
|
|
|
||
|
|
### Examples
|
||
|
|
|
||
|
|
<!-- eslint-disable no-new-wrappers -->
|
||
|
|
|
||
|
|
<!-- eslint no-undef: "error" -->
|
||
|
|
|
||
|
|
```javascript
|
||
|
|
var isBoolean = require( '@stdlib/assert/is-boolean' );
|
||
|
|
|
||
|
|
var bool = isBoolean( false );
|
||
|
|
// returns true
|
||
|
|
|
||
|
|
bool = isBoolean( new Boolean( false ) );
|
||
|
|
// returns true
|
||
|
|
|
||
|
|
bool = isBoolean( 'true' );
|
||
|
|
// returns false
|
||
|
|
|
||
|
|
bool = isBoolean( null );
|
||
|
|
// returns false
|
||
|
|
```
|
||
|
|
|
||
|
|
</section>
|
||
|
|
|
||
|
|
<!-- /.examples -->
|
||
|
|
|
||
|
|
<section class="links">
|
||
|
|
|
||
|
|
</section>
|
||
|
|
|
||
|
|
<!-- /.links -->
|