Question

How to use question question equals ??= logical assignment operator in TypeScript

Answer 1

const a = 3;
a ??= 7;
console.log(a);
 
let b = 3;
b ??= 7;
console.log(b);
  
let x = undefined;
x ??= 12;
console.log(x);
x ??= 80;
console.log(x);


let y = null;
y ??= 99;
console.log(y);
 
  
  
  
    
/*
run:

3 
3 
12 
12 
99 
  
*/

 

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