I'm trying to remove keys from an object where the values is Array(0). Here's the object:
{fruit: Array(1), dairy: Array(2), vegetables: Array(0)}
This is the desired result:
{fruit: Array(1), dairy: Array(2)}
So far, I've been playing with the delete operator and .filter/.reduce methods.
Any help would be awesome :)
Just iterate over the keys of the object, check if the value for that key is an empty array and if so, delete it:
let obj = {
a: [1],
b: [],
c: 5,
d: false
}
for (const key in obj) { if (Array.isArray(obj[key]) && !obj[key].length) delete obj[key] };
console.log(obj);The filter/reduce operators are for Arrays not for objects. If you must use the filter/reduce operators, you can try:
const obj = {a: [1], b: [1,2], c: []};
const filtered = Object.keys(obj)
.filter(key => Array.isArray(obj[key]) && obj[key].length != 0)
.reduce((acc, key) => {acc[key] = obj[key]; return acc}, {});
console.log(filtered);