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  • Nageshwer Reddy Mar-15-2019 06:53:50 AM ( 2 months ago )

     

    I have the following output which needs to be parsed and have to calculate the total in order to display it on the front end in angular 7:-

    {
        "cart": [
            {
                "id": 28,
                "Name": "Retin a gel",
                "Price": 50,
                "Quantity": 3,
                "Cost": 150,
                "createdAt": "2019-03-15 02:44:55.047 +00:00",
                "updatedAt": "2019-03-15 02:45:04.574 +00:00"
            }
        ]
    }

    in want to parse through this output and calculate total which sum of all total cost in typescript as a function to display it on the front end ? can some tell me how design such function?

  • Naveen Shastri Mar-15-2019 06:55:39 AM ( 2 months ago )

    You can reduce with destructuring like so:

    let totalSum = yourObject.cart.reduce((acc, { Cost }) => acc + Cost, 0);
  • Pooja Bhardwaj Mar-15-2019 06:57:19 AM ( 2 months ago )

    You can do like this,I hope it helps

    let total = 0;
    let JsonRes= "{
    "cart": [
        {
            "id": 28,
            "Name": "Retin a gel",
            "Price": 50,
            "Quantity": 3,
            "Cost": 150,
            "createdAt": "2019-03-15 02:44:55.047 +00:00",
            "updatedAt": "2019-03-15 02:45:04.574 +00:00"
        }
       ]
     }"
    
    for (let i = 0; i < JsonRes.cart.length(); i++) {
          total  + = +JsonRes.cart[i].Cost; 
    }
    console.log(total);

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