javascript/callbacktask.js at master · reenakesavan/javascript · GitHub

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function launchapplication (b)
{
    setTimeout(() => {
        console.log("Application opened");
        b()
    }, 500);
}
function Login (a)
{
    setTimeout(() => {
        console.log("Login with valid user name and password");
        a()
    }, 1500);
}
function searchitem (c)
{
    setTimeout(() => {
        console.log("Product is searched");
        c()
    }, 2000);
}
function reviewproduct (d)
{
    setTimeout(() => {
        console.log("Product is reviewed");
        d()
    }, 3000);
}
function Addtocart (e)
{
    setTimeout(() => {
        console.log(" Product is added to cart");
        e()
    }, 3500);
}
function Placeorder (f)
{
    setTimeout(() => {
        console.log(" Product send for order");
        f()
    }, 200);
}
function Payment (g)
{
    setTimeout(() => {
        console.log(" Payment initaited to place order");
        g()
    }, 100);
}
function Success ()
{
    setTimeout(() => {
        console.log(" Product order ");

    }, 300);
}

launchapplication(()=>{
    Login(()=>{
        searchitem(()=>{
            reviewproduct(()=>{
                Addtocart(()=>{
                    Placeorder(()=>{
                        Payment(Success)

                    })

                })

            })
        })
    })

})