ReactJS-Interview-Questions/Javascript_Array.html at main · shilpa-maity/ReactJS-Interview-Questions · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <script type="text/javascript">
        //Question 1 :
         // var user = {'id':1001,'name':'John','age':22,'e-mail':'a@a.com'};
            // var user = {
            //     id :1001,
            //     name:'John',
            //     age :22,
            //     'e-mail':'a@a.com'
            // } ;
            // console.log(user,typeof(user));
            // console.log(user['e-mail']);
            //console.log(user['age']);


            //Question 2 :
            var users = [
                {'id':1001,'name':'John','age':22,'e-mail':'j@j.com'},
                {'id':1002,'name':'SMith','age':23,'e-mail':'s@s.com'},
                {'id':1003,'name':'Joe','age':21,'e-mail':'y@y.com'}
            ];
            //It is an Compound Object single Object holds multiple objects under itself.
            console.log(users,typeof(users),users.length);
            //calculate total & average Age
            var totalAge =0;
            for(var i=0;i<users.length;i++){
                console.log(users[i]['e-mail']);
                totalAge+=users[i].age;
            }
            console.log("Total Age is "+totalAge);
            console.log("Average age is :"+(totalAge/users.length));

           for(var xyz of users){
            console.log(xyz['e-mail']);
           }

           for(var index in users){
            console.log(index);
           }


//Question 3:
//1.Display entire food list in console.
//2.Display only biriyani items and calculate total & average price.
//3.Calculate Gross total of all chicken related items .
//4.Find Out maximum cost Item , min cost item.
// 5.display those food items whose price is between 150-350.
 var foodList = [
  {'food_id':1001,'food':'Chicken Biriyani','price':200},
  {'food_id':1002,'food':'Mutton Biriyani','price':350},
  {'food_id':1003,'food':'Chilly Chicken','price':150},
  {'food_id':1004,'food':'Paneer Masala','price':220},
  {'food_id':1005,'food':'Chicken Lollypop','price':120}
];
console.log(foodList,typeof(foodList),foodList.length);
//1.Display entire food list in console.
for(var i=0;i<foodList.length;i++){
    console.log(foodList[i]);
}
//2.Display only biriyani items and calculate total & average price.
var totalPrice =0;
var biriyaniCount =0;
for(var i=0;i<foodList.length;i++){
    if(foodList[i]['food'].includes('Biriyani')){
        console.log(foodList[i]);
        totalPrice+=foodList[i].price;
        biriyaniCount++;
    }
}
console.log("Total Price of Biriyani is "+totalPrice);
console.log("Average Price of Biriyani is "+(totalPrice/biriyaniCount));
//3.Calculate Gross total of all chicken related items .
var grossTotal =0;
for(var i=0;i<foodList.length;i++){
    if(foodList[i]['food'].includes('Chicken')){
        console.log(foodList[i]);
        grossTotal+=foodList[i].price;
    }
}
console.log("Gross Total of Chicken related items is "+grossTotal);
//4.Find Out maximum cost Item , minimum  cost item.
var maxCost = foodList[0].price;
var minCost = foodList[0].price;
var maxCostItem = foodList[0].food;
var minCostItem = foodList[0].food;
for(var i=0;i<foodList.length;i++){
    if(foodList[i].price>maxCost){
        maxCost = foodList[i].price;
        maxCostItem = foodList[i].food;
    }
    if(foodList[i].price<minCost){
        minCost = foodList[i].price;
        minCostItem = foodList[i].food;
    }
}
console.log("Maximum Cost Item is "+maxCostItem+" with price "+maxCost);
console.log("Minimum Cost Item is "+minCostItem+" with price "+minCost);
//5.display those food items whose price is between 150-350.
for(var i=0;i<foodList.length;i++){
    if(foodList[i].price>=150 && foodList[i].price<=350){
        console.log(foodList[i]);
    }
}


    </script>
</body>
</html>