በአንድ ነገር ውስጥ ቁልፍ መኖሩን ያረጋግጡ. JavaScript

በአንድ ነገር ውስጥ ቁልፍ መኖሩን ያረጋግጡ. JavaScript



በኦፕሬተር ውስጥ በመጠቀም በነገር ውስጥ ቁልፍ መኖሩን ያረጋግጡ
JavaScript example code

JavaScript

  Output result
The key exists.
hasOwnProperty()ን በመጠቀም በነገር ውስጥ ቁልፍ መኖሩን ያረጋግጡ
JavaScript example code

JavaScript

  Output result
The key exists.


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