Answers for "javascript add parameter to object"

javascript add to object

var element = {}, cart = [];
element.id = id;
element.quantity = quantity;
cart.push(element);

// Array of Objects in form {element: {id: 10, quantity: 10} }
var element = {}, cart = [];
element.id = id;
element.quantity = quantity;
cart.push({element: element});

javascript add parameter to object

const obj = {
    key1: value1,
    key2: value2
};

obj.key3 = value3;