controlflow.js

// if(2===2)
// {
//     console.log(`yes`);
    
// }
// if(3===3) console.log(`yes`);
// if (1===1) {
//     console.log(`yes`);

// }
// else if (4==4) {
//     console.log(`yes`);

// } else {
    
// }
const Day="Friday"
switch (Day) {
    case "Monday":
        console.log(`Day is${Day}`);
        
        break;
    case "Tuesday":
        console.log(`Day is${Day}`);
        
        break;
    case "Wednesday":
        console.log(`Day is${Day}`);
        
        break;
    case "Thursday":
        console.log(`Day is${Day}`);
        
        break;
    case "Friday":
        console.log(`Day is${Day}`);
        
        break;
    case Saturday:
        console.log(`Day is${Day}`);
        
        break;
    case Sunday:
        console.log(`Day is${Day}`);
        
        break;

    default:
        console.log(`not a valid dayy`);
        
        break;
}
//falsy value = false, "" ,bigint0n,  null, undefinned, NaN, 0, -0 ;
//Truthy value = [], function(){}, {} " ","0"," ","false";

// let userEmail="samarpitjainsj3@gmail.com"
// if (userEmail) {
//     console.log(`email veriified`);
    
// }
// const object1={}

// if (Object.keys(object1).length===0) {
//     console.log(`${object1} is empty`);
    
// }
for (let i = 0; i < 10; i++) {
    console.log(i);
        
}