Can you use constant variables in JavaScript? [duplicate]

Answer 1

The solution is to create an object and put all your constants in the object:

const={};

const.x=20;

const.y=30;

Object.freeze(const);  // finally freeze the object

Usage:

var z=const.x + const.y;

Any attempt to modify the variable will generate an error:

const.x=100;  <== raises error