hey I want to calculate the sum of one property from array of object using lodash
suppose the array of object looks like this ...
salary":[{
"bills":[{"electricity":300,"milk":500},
{"electricity":240,"milk":200},
{"electricity":800,"milk":900}]
}]
I want to calculate the sum of 'milk' from that object using lodash.
Use nested _.sumBy() calls. The internal gets the sum of milk from one salary, and the external sums all salaries:
const data = {"salary":[{"bills":[{"electricity":300,"milk":500},{"electricity":240,"milk":200},{"electricity":800,"milk":900}]}]}
const result = _.sumBy(data.salary, ({ bills }) => _.sumBy(bills, 'milk'))
console.log(result)<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.11/lodash.js"></script>Something like this
const bills = salary.map((s)=> s.bills)
_(bills).map((objs,key)=>({
'milk': _.sumBy(objs, 'milk')
})).value
