I have an array in JavaScript that looks like this:
[
{ quantity: 1, name: 'Menu sandwiches' },
{ quantity: 1, name: 'Menu sandwiches' },
{ quantity: 1, name: 'Menu sandwiches' },
{ quantity: 1, name: 'Pizza' },
{ quantity: 1, name: 'Piza' }
]Now, I want to transform this array into:
[
{ quantity: 3, name: 'Menu Sandwich' },
{ quantity: 2, name: 'Pizza' }
]Can someone please help me achieve this?
Suppose the values in the initial array are not always 1:
function combineQuantities(arr) {
let result = {};
arr.forEach(({quantity, name}) => {
result[name] = result[name] || {name, quantity: 0};
result[name].quantity += quantity;
})
return Object.values(result);
}
This function creates a new object with attribute names based on the 'name' property of each item in the array. It then loops through the array, accumulating quantities for each unique name. The final output is an array without keys, just the desired form.
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