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Answers and rating deltas for

How to determine if variable is 'undefined' or 'null'

Author Votes Δ
Sarfraz 534 +2.41
temporary_user_name 54 0.00
jkindwall 19 0.00
Chetan Sastry 8 -2.41
Welshboy 3 0.00
DenisS 3 0.00
Angelin Nadar 2 0.00
Jones Agyemang 1 0.00
Fazi 0 0.00
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