Cascading undefined testing

Asked Mar 01 '17 at 17:01

Active Mar 01 '17 at 18:43

Viewed 81 times

Is there a way to synthetize a "nil or empty" testing like this one ?

if (!shoppingCartLine ||
    !shoppingCartLine.relationships ||
    !shoppingCartLine.relationships.offer ||
    !shoppingCartLine.relationships.offer.links ||
    !shoppingCartLine.relationships.offer.links.self)
return null;

to an helper like this :

if (isNilOrEmpty(shoppingCartLine.relationships.offer.links.self))
return null;

or maybe like C#6.0 Null-Conditional Operator :

if (!shoppingCartLine?.relationships?.offer?.links?.self)
return null;

without throwing an error :

Cannot read property 'links' of undefined

edited Mar 01 '17 at 18:43

Deividas

6,437
2
26
27

asked Mar 01 '17 at 17:01

Guillaume R

Do you mean this http://stackoverflow.com/questions/2673121/how-to-check-if-object-has-any-properties-in-javascript ? – Murat Karagöz Mar 01 '17 at 17:04

Cascading undefined testing

0 Answers0