javascript flatten array of object code example
Example 1: javascript array flatten
const arr1 = [1, 2, [3, 4]];
arr1.flat();
const arr2 = [1, 2, [3, 4, [5, 6]]];
arr2.flat();
const arr3 = [1, 2, [3, 4, [5, 6]]];
arr3.flat(2);
const arr4 = [1, 2, [3, 4, [5, 6, [7, 8, [9, 10]]]]];
arr4.flat(Infinity);
Example 2: flatten array object javascript
var flattenArray = function(data) {
return data.reduce(function iter(r, a) {
if (a === null) {
return r;
}
if (Array.isArray(a)) {
return a.reduce(iter, r);
}
if (typeof a === 'object') {
return Object.keys(a).map(k => a[k]).reduce(iter, r);
}
return r.concat(a);
}, []);
}
console.log(flattenArray(data))