Loops 

console.log("Hello World!");
/////Loops in JavaScript 

var persons=[{name:"Alex",age:22},{name:"Maria",age:30}]


for (var i=0;i<persons.length;i++)
{
console.log(persons[i].name+'  '+persons[i].age);    
}

while(false)
{
    
}


do{
    
}while(false);