Javascript - possible to remove element of an associative array

Question

Is it possible to remove an element of a Javascript associative array (i.e., set back to native undefined)?

When I tried simply alert(array['knownKey']); array['knownKey']=undefined; alert(array['knownKey']); ... the second alert produced the literal undefined... whereas, the first alert returned nothing.

possible duplicate of Delete a key from an associative array — kennytm
– kennytm, Commented Aug 13, 2010 at 8:23

kennytm · Accepted Answer · 2010-08-13 08:21:10Z

2

To actually delete an element, use

delete array['knownkey'];

answered Aug 13, 2010 at 8:21

kennytm

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1 Comment

ina Over a year ago

very helpful coming from php dev perspective - lack of unset()

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