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YaroslavW/null_undifined.js

Created March 1, 2019 16:03
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null and undefined checking
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null_undifined.js
// ===> For Null
const isNull = (val) => !val && typeof val === 'object';
isNull(null); // true
// ===> For undifined
const isUndefined = (value) => typeof value === 'undefined';
isUndefined(undefined); // true
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