js const [ variable ] code example
Example 1: what is const in javascript
const age; // errror as const cannot be kept un-initialized;
const age = 20 ;
const age = 21 , // error as once declared const variable cann't be
// re-declared in same scope or different scope.
Example 2: const js +=
const foo; // Errror as const cannot be kept un-initialized;
const foo = "foo";
console.log(foo); //Output: foo
foo += " bar"; //Error