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Start your free trialkaran Badhwar
Web Development Techdegree Graduate 18,135 PointsHelp me understand this example. please
I saw an example for reduce (), but this is very confusing can somebody please explain me and is this a write way to write a syntax
const people = [
{name: 'kyle', age: 26},
{name: 'karan', age : 27},
{name: 'Rahil', age : 27},
{name: 'Vinay', age: 25}
];
const result = people.reduce(groupedPeople, person) => {
const age = person.age;
if (groupedPeople[age] == null) groupedPeople[age] = []
groupedPeople[age].push(person)
}, {});
console.log(result);
1 Answer
Steven Parker
231,272 PointsThis syntax is fine, but it is perhaps a bit complex for a first example.
Take a look at the thorough explanation on the MDN page for reduce(). It also contains several more examples of different levels of complexity.
karan Badhwar
Web Development Techdegree Graduate 18,135 Pointskaran Badhwar
Web Development Techdegree Graduate 18,135 PointsSteven Parker, but if ever I encounter such type of syntax how do I know for future reference what's happening, coz now it takes me time to understand that
Steven Parker
231,272 PointsSteven Parker
231,272 PointsReduce is perhaps one of the less intuitive things in JavaScript. Luckily, there are always handy online references. If I haven't it used much recently, I have to go look up the syntax myself.