Javascript Test If Variable Is Null

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Javascript Test If Variable Is Null

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Sep 17 2022 nbsp 0183 32 To check if a variable is undefined or null in JavaScript either use the equality operator or strict equality operator In JavaScript a variable is considered undefined if it is declared but not assigned a value Mar 29 2023 nbsp 0183 32 In this short guide you ll learn how to check if a variable is undefined null or nil in vanilla JavaScript and with Lodash with practical examples and advice on when to use which approach

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