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[JavaScript] js removes variable properties

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Posted on 6/8/2017 1:44:25 PM | | | |


Delete attributes

The only way to delete an attribute is to use the delete operator; Setting a property to undefined or null does not actually remove the property, but only removes the association between the property and the value.


The output above has bar undefined and foo null - only baz is actually removed, so it disappears from the output.




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 Landlord| Posted on 8/10/2017 4:27:02 PM |




If you want to remove a js variable object, you must use delete, and assign the object you want to remove as empty, and it cannot be removed!
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