Scope

scope

'use strict';
var globalObj = "Global";
/*
    global variables are accessible to all functions 
*/
function abc(){
    console.log("Global object is "+globalObj);
}

abc();
/*
    Variables outside a function are also available to inner function. Vice versa is not true 
*/
function bcd(){
    var a = 4;
    function inner(){
        var c = 7;
      console.log("a:"+a);
    }
    inner();
  console.log("c:"+c);
}
bcd();