const example ECMA 6

const_003.js

/**
 * Constant as an array
 */
const OBJ =  ["foo","bar"];
console.log(OBJ);
// chaging the value of a constant "variable" =)
// no errors displayed
OBJ[0] = "another value";
OBJ[1] = "example text";

console.log(OBJ);

// but if you try to change the structure it self
// ERROR...
OBJ = {newProp : "qwerty"};

// END