How to check an object property if the property name is an empty string?

Question

JavaScript object properties can be named with an empty string, for example:

foo = { "" : "bar" } 

Point notation does not seem to be able to name this property. Console output:

 foo. >> "missing name after . operator" 

What would you call a property?

Answer 1

Use an empty string as a key with console syntax:

 foo[""] 

Answer 2

This can be done using the square brackets. Console output:

 foo[""] >> "bar" 

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