Convert array of object to object with keys

Question

say I have an array :

[ { name: \'A\', count: 100 }, { name: \'B\', count: 200 } ]

how can I get an object :

{ A : 100, B : 200         


        

Answer 1

Looks like a great opportunity to practice using Array.prototype.reduce (or reduceRight, depending on desired behaviour)

[{name: 'A', count: 100}, {name: 'B', count: 200}].reduceRight(
    function (o, e) {o[e.name] = e.count; return o;},
    {}
); // {B: 200, A: 100}

This could also be easily modified to become a summer,

o[e.name] = (o[e.name] || 0) + e.count;