Question

How to get the length of an enum in TypeScript

Answer 1

enum Languages {
  TypeScript = 'A',
  Java = 'B',
  Python = 'C',
  CPP = 'D'
}
 
console.log(Object.keys(Languages).length); 

 
 
 
  
/*
  
run:
  
4
 
*/

 

70+ SQL courses for beginners and professionals

Answer 2

enum Languages {
  TypeScript = 'A',
  Java = 'B',
  Python = 'C',
  CPP = 9
}
 
// 'TypeScript', 'Java', 'Python', 'CPP', 9 

console.log(Object.keys(Languages).length); 

 
 
 
  
/*
  
run:
  
5
 
*/

 

70+ SQL courses for beginners and professionals