Javascript Check If Variable Is Null
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Javascript Check If Variable Is Null
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How To Check Null In Java
The first will execute the block following the if statement if myVar is truthy i e evaluates to true in a conditional while the second will execute the block if myVar is any value other than null The only values that are not truthy in JavaScript are the following a k a falsy values null undefined 0 the empty string false You can use the loose equality operator to check for null values let firstName null console log firstName null true But this can be tricky because if the variable is undefined it will also return true because both null and undefined are loosely equal
How To Check If A Variable Is Null Or Undefined In JavaScript
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