create a step wizzard in html code example

Example 1: javascript steps

//want to link the form inputs with the submit 

// add event listner 

formEl.addEventListener("submit",click);

function click(event){
    event.preventDefault();
 var from = event.target.from.value;
 var to = event.target.to.value;
 var capacity = event.target.capacity.value;
 var reserve = event.target.reserve.value;
 var object=new data(from,to,capacity,reserve);
 object.leftedSeats();
 object.render();
 object.total();
 set();

}

Example 2: javascript steps

// now I want to calculate the lefted seats 

data.prototype.leftedSeats=function() //Acsses the constructor
{
    
    this.lefted = this.capacity-this.reserve ;

}

data.prototype.leftedSeats();