javascript - Why i am getting undefined? -

here code:

var person = {     name: 'greg',     year: 20 }; object.defineproperties(person, {     gender :{         value: 'male'     },     edition : {         value : 12     },     edition : {         set:function  (no) {             if (no===13) {                 console.log('yes')             };         }     }  }) console.log(person.edition) 

looks did right, did not change descriptors ideas? thanks

when write person.edition, calling method. not defined. call set method need assignment. try this:

var person = {      name: 'greg',      year: 20  };  object.defineproperties(person, {      "gender" :{          value: 'male'      },      "edition" : {          value : 12      },      "edition" : {          set:function  (no) {              if (no===13) {                  console.log('yes')              };          }          , get:function  () {              return "hi";          }      }    })  console.log(person.edition)  person.edition = 13;