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Test if a value is an even number.
To use in Observable,
isEven = require( 'https://cdn.jsdelivr.net/gh/stdlib-js/assert-is-even@umd/browser.js' )To vendor stdlib functionality and avoid installing dependency trees for Node.js, you can use the UMD server build:
var isEven = require( 'path/to/vendor/umd/assert-is-even/index.js' )To include the bundle in a webpage,
<script type="text/javascript" src="https://cdn.jsdelivr.net/gh/stdlib-js/assert-is-even@umd/browser.js"></script>If no recognized module system is present, access bundle contents via the global scope:
<script type="text/javascript">
(function () {
window.isEven;
})();
</script>Tests if a value is an even number.
var Number = require( '@stdlib/number-ctor' );
var bool = isEven( 6.0 );
// returns true
bool = isEven( new Number( 6.0 ) );
// returns true
bool = isEven( 3.0 );
// returns false
bool = isEven( -3.14 );
// returns false
bool = isEven( null );
// returns false
bool = isEven( NaN );
// returns falseTests if a value is a primitive even number.
var Number = require( '@stdlib/number-ctor' );
var bool = isEven.isPrimitive( -4.0 );
// returns true
bool = isEven.isPrimitive( new Number( -4.0 ) );
// returns falseTests if a value is a Number object having an even number value.
var Number = require( '@stdlib/number-ctor' );
var bool = isEven.isObject( 4.0 );
// returns false
bool = isEven.isObject( new Number( 4.0 ) );
// returns true<!DOCTYPE html>
<html lang="en">
<body>
<script type="text/javascript" src="https://cdn.jsdelivr.net/gh/stdlib-js/number-ctor@umd/browser.js"></script>
<script type="text/javascript" src="https://cdn.jsdelivr.net/gh/stdlib-js/assert-is-even@umd/browser.js"></script>
<script type="text/javascript">
(function () {
var bool = isEven( 4.0 );
// returns true
bool = isEven( 0.0 );
// returns true
bool = isEven( new Number( 4 ) );
// returns true
bool = isEven( 5.0 );
// returns false
bool = isEven( NaN );
// returns false
bool = isEven( '5' );
// returns false
bool = isEven( null );
// returns false
})();
</script>
</body>
</html>@stdlib/assert-is-odd: test if a value is an odd number.
This package is part of stdlib, a standard library for JavaScript and Node.js, with an emphasis on numerical and scientific computing. The library provides a collection of robust, high performance libraries for mathematics, statistics, streams, utilities, and more.
For more information on the project, filing bug reports and feature requests, and guidance on how to develop stdlib, see the main project repository.
See LICENSE.
Copyright © 2016-2024. The Stdlib Authors.
