javascript define constant code example

Example 1: how to dec are a constant in javascript

const myBirthday = '18.04.1982';

Example 2: constants in js

static methodName() { ... }
static propertyName [= value];

Example 3: const {} = object in javascript

/*The destructuring assignment syntax is a JavaScript expression that
makes it possible to unpack values from arrays, or properties from objects,
  into distinct variables.*/
  let array = [2,3]; 
  [a,b] = array;// unpacking array into var a and b
  console.log(a); //output 2
  console.log(b); //output 3
  let object = {name:"someone",weight:"500pounds"};
  let {name,weight} = object; // unpacking object into  var name and weight
  console.log(name);// output someone
  console.log(weight);//output 500pounds

//it i similar as doing this
/*
var a = array[0];
var b = array[1]
var name = object.name;
var weight = object.weight;

 */

Example 4: how to create a constant in javascript

const example1 = "hello this is string variable" ; //this is string constant
const example2 = 12345 ; //this is numeric constant
const example3 = true ; //boolean constant