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The global isNaN is not precise at all, and Number.isNaN is an ES6 feature that makes it preferrable to use assert's sameValue for NaN values, as it handles it internally using the comparison.
11 lines
335 B
JavaScript
11 lines
335 B
JavaScript
// Copyright 2009 the Sputnik authors. All rights reserved.
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// This code is governed by the BSD license found in the LICENSE file.
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/*---
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info: Result of number conversion from undefined value is NaN
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es5id: 9.3_A1_T1
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description: Undefined convert to Number by explicit transformation
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---*/
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assert.sameValue(Number(undefined), NaN);
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