code.js

 /*if (true) {
  var name = '123';
}
console.log(name);
*/

/*
if (true) {
  let name = '123';

}
console.log(name);
*/

/*
for (var i=0; i<3; i++) {
  console.log(i);
}
console.log(i);
*/

/*
if (5<3) {
  console.log('this is impossible');
} else{
  console.log('really 5 is not less than 3' );
}
*/

/*
let i=0;
while (i < 4) {
  console.log(2);
}
*/

/*array basic example
let students = ['student1','student2','student3']
console.log(students[1]);
*/

/* not an error, but undefined
let students = ['student1','student2','student3']
console.log(students[40]);
*/

/* container
const friends = {friend1: '123456' , friend2: '789456'};
console.log(friends.friend1);
console.log(friends['friend2']);
*/

/*
function fac( n ) {
	if ( n == 0 )
		return 1;
	else
		return fac( n - 1 ) * n;
}
console.log(fac(8));
*/

/*
if (0 / 0 > 5 ) {
	console.log('you are an idiot');
} else {
	console.log('fuckin idiot');
}
*/

/* -Infinity
console.log( -3 / 0 );
*/

/* NaN
console.log( 0 / 0 );
*/

/*Boolean simplest
console.log( 3 < 2 );
*/


/* Logical operators
console.log(5<4 && 12>4);
console.log(5<4 || 12>4);
console.log(!5<4);
*/


/* ternary operator
console.log ( true ? 1 : 2) ;

console.log ( false ? 1 : 2) ;
*/


 /*automatic type conversion
console.log (8 * null )
// ! 0
console.log ("5" - 1)
// ! 4
console.log ("5" + 1)
// ! 51
console.log (" five " * 2)
// ! NaN
console.log ( false == 0)
// ! true
*/

/*
console.log ( null == undefined) ;
// ! true
console.log( null == 0) ;
// ! false
*/