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JavaScript

var json = 
[
    {
        "name": "847_KK_0_KK_0tab1_checkbox",
        "cost": 10,
        "additionname": "Topping mango1",
        "addtionid": 100
    },
    {
        "name": "847_KK_1_KK_0tab1_checkbox",
        "cost": 12,
        "additionname": " Topping mango2",
        "addtionid": 101
    },
    {
        "name": "847_KK_1_KK_0tab2_checkbox",
        "cost": 12,
        "additionname": " Topping mango2",
        "addtionid": 111
    },
    {
        "name": "847_KK_1_KK_0tab2_checkbox",
        "cost": 12,
        "additionname": " Topping mango2",
        "addtionid": 111
    }
] ;

toppings_quantitywise = [];

values = [];

for (var i = 0; i < json.length; i++) {
			var name = json[i].name;
			var additionname = json[i].additionname;
    
    values.push(additionname);

			 toppings_quantitywise.push({
                        'name': 'Quantity'+,
                        'value': values
                    });
			
		}