how to calculate summary using javascript?

Question

var data = [
    {
        _id:            '6d2847090a6a1b',
        user_id:        '580da5653bd3cc5802f6c37c',
        name:           'aaaa',
        sum: 250
        
    },
    
    {
        _id:            '75f36d2847090a6a36580871',
        user_id:        '3bd3cc5802f6c37c580da565',
        name:           'bbbb',
       sum :30
    },
    {
        _id:            '6a3087184367090a6a3e58fd284',
        user_id:        '2f63bc580c37c580da565d3c',
        name:           'ccc',
        sum :100
    }
];


var giftedObject = [];
data.forEach(function(userSummary){
    userSummary.numberOfGifted = Math.floor(userSummary.sum / 100);
    for(var i = 0; i < userSummary.numberOfGifted; i++){
        giftedObject.push({
            user_id: userSummary.user_id,
            name: userSummary.name,
            gifted_point: 1,
            active: true
        });
    }
    
});
var result = {giftedObject: giftedObject};
console.log(result);

Above is my code .here when ever user reached 100 points giftedObjectobject will create.

if user reached 100 point that time one object will create

if user reached 200 point that time two object will create

after creating object we need to reduce the gifted values from data

expected result :

gifted object result:

{
        active:true
        user_id:        '580da5653bd3cc5802f6c37c',
        gifted_point: 1
        name:           'aaaa',


    },

    {
         active:true
        user_id:        '580da5653bd3cc5802f6c37c',
        gifted_point: 1
        name:           'aaaa',
    },
    {

         active:true
        user_id:        '2f63bc580c37c580da565d3c',
        gifted_point: 1
        name: 'ccc',
    }

final data result

 {
            _id:            '6d2847090a6a1b',
            user_id:        '580da5653bd3cc5802f6c37c',
            name:           'aaaa',
            sum: 248

        },

        {
            _id:            '75f36d2847090a6a36580871',
            user_id:        '3bd3cc5802f6c37c580da565',
            name:           'bbbb',
           sum :30
        },
        {
            _id:            '6a3087184367090a6a3e58fd284',
            user_id:        '2f63bc580c37c580da565d3c',
            name:           'ccc',
            sum :99
        }

It is not at all clear what you're trying to do. everything working fine but after creating object we need to reduce (minus) in sum value — Jamiec
– Jamiec, Commented Dec 14, 2016 at 17:43
Along the lines of @Jamiec, you want to create a new list of objects, while modifying the original list of objects in place to reduce the sum of each entry by the number of objects created for the new list? — Jared Smith
– Jared Smith, Commented Dec 14, 2016 at 17:45

Nina Scholz · Accepted Answer · 2016-12-14 18:00:25Z

2

You could subtract gifted_points from the sum.

var data = [{ _id: '6d2847090a6a1b', user_id: '580da5653bd3cc5802f6c37c', name: 'aaaa', sum: 250 }, { _id: '75f36d2847090a6a36580871', user_id: '3bd3cc5802f6c37c580da565', name: 'bbbb', sum: 30 }, { _id: '6a3087184367090a6a3e58fd284', user_id: '2f63bc580c37c580da565d3c', name: 'ccc', sum: 100 }],
    giftedObject = [];

data.forEach(function (userSummary) {
    var i,
        gifted_point = Math.floor(userSummary.sum / 100);

    userSummary.sum -= gifted_point;
    for (i = 0; i < gifted_point; i++) {
        giftedObject.push({
            user_id: userSummary.user_id,
            name: userSummary.name,
            gifted_point: 1,
            active: true
        });
    }
});

result = { giftedObject: giftedObject };
console.log(data);
console.log(result);

.as-console-wrapper { max-height: 100% !important; top: 0; }

edited Dec 14, 2016 at 18:00

answered Dec 14, 2016 at 17:45

Nina Scholz

388k26 gold badges367 silver badges417 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

its me Over a year ago

i need to get two different objects one for final data and one for giftedObject

fafl · Accepted Answer · 2016-12-14 17:46:00Z

0

How about decrementing the sum inside the for-loop?

for(var i = 0; i < userSummary.numberOfGifted; i++){
    giftedObject.push({
        user_id: userSummary.user_id,
        name: userSummary.name,
        gifted_point: 1,
        active: true
    });
    userSummary.sum -= 1; // <--- add this line
}

answered Dec 14, 2016 at 17:46

fafl

7,5074 gold badges32 silver badges54 bronze badges

Collectives™ on Stack Overflow

how to calculate summary using javascript?

2 Answers 2

1 Comment

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

1 Comment

Comments

Your Answer

Sign up or log in

Post as a guest

Related