Home Original page

stdlib/lib/node_modules/@stdlib/assert/is-same-value at develop · stdlib-js/stdlib

isSameValue

Test if two arguments are the same value.

Usage

var isSameValue = require( '@stdlib/assert/is-same-value' );

isSameValue( a, b )

Tests if two arguments a and b are the same value.

var bool = isSameValue( false, false );
// returns true

bool = isSameValue( '', '' );
// returns true

bool = isSameValue( {}, {} );
// returns false

In contrast to the strict equality operator ===, the function distinguishes between +0 and -0 and treats NaNs as the same value.

var bool = ( 0.0 === -0.0 );
// returns true

bool = isSameValue( 0.0, -0.0 );
// returns false

bool = isSameValue( -0.0, -0.0 );
// returns true

bool = ( NaN === NaN );
// returns false

bool = isSameValue( NaN, NaN );
// returns true

Notes

Examples

var isSameValue = require( '@stdlib/assert/is-same-value' );

var bool = isSameValue( true, true );
// returns true

bool = isSameValue( true, false );
// returns false

bool = isSameValue( 'beep', 'beep' );
// returns true

bool = isSameValue( 3.14, 3.14 );
// returns true

bool = isSameValue( null, null );
// returns true

bool = isSameValue( 0.0, 0.0 );
// returns true

bool = isSameValue( -0.0, 0.0 );
// returns false

bool = isSameValue( NaN, NaN );
// returns true

bool = isSameValue( {}, {} );
// returns false

bool = isSameValue( [], [] );
// returns false

bool = isSameValue( isSameValue, isSameValue );
// returns true

See Also