const syntax javascript 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 in javascript
const value = 10;
const constant = value;
Example 3: javascript const
const b = 1; // this variable unique and can't change it.