isArray(element)) { const flattenedElement = flatten(element, depth - 1); // Recursively flatten nested arrays result.push(...flattenedElement); // Use spread operator for efficient merging } else { result.push(element); } } return result; } // Examples const arr1 = [1, 2, [3, 4...
The reduce method can flatten nested arrays into a single array. main.js const nested = [[1, 2], [3, 4], [5, 6]]; const flat = nested.reduce((acc, current) => { return acc.concat(current); }, []); console.log(flat); ...
The concat method does not recursively flatten nested arrays. main.js const arr1 = [1, 2, [3, 4]]; const arr2 = [[5, 6], 7, 8]; const combined = arr1.concat(arr2); console.log(combined); When concatenating arrays containing nested arrays, the nested arrays remain as single ...
constflattened=nested.flat(nested.length); log(flattened); // ['', '', ''] constarr1=[1,2,3,[1,2,3,4,[2,3,4]]]; functionflattenDeep(arr){ returnarr.reduce( (acc,val)=> Array.isArray(val)?acc.concat(flattenDeep(val)):acc.concat(val), [], ); } flattenDeep(arr1); /...
// Flattens recursively until the array contains no nested arrays numbers.flat(Infinity) > [1, 2, 3, 4, 5, 6] 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 参考地址:https://developer.mozilla.org/zh-CN/docs/Web/JavaScript/Reference/Global_Objects/Array/flat...
// Flatten any nested arrays return concat.apply( [], ret ); //如果callback没有返回值,那么value就是[] } 背景标白的区域为与each方法不同的地方,可以简单的理解为返回对象是否是副本(map是副本),另外map是为数组或类数组对象量身定做的,而each可以应用于全部对象。
_flattenObject: Flattens a nested object into a single-level object, using dot notation for nested keys. _deepMerge: Deeply merges two objects, recursively merging nested objects. _chunk: Splits an array into smaller arrays (chunks) of a specified size. _asyncDebounce: Creates a debounced ver...
const arr = [1, 2, [3, 4, [5, 6]]];arr.flat(); // [1, 2, 3, 4, [5, 6]]arr.flat(2); // [1, 2, 3, 4, 5, 6]// You can use Infinity to flatten all the nested arrays no matter how deep the array is const arrExtreme = [1, [2, [3, [4, [5, 6, 7,...
你可以在reduce参数中使用数组重构（[item]代替item）来有效地扁平化它，用reduce删除重复项，最后排序。
}//Flatten any nested arraysreturnconcat.apply( [], ret );//如果callback没有返回值,那么value就是[] } 背景标白的区域为与each方法不同的地方,可以简单的理解为返回对象是否是副本(map是副本),另外map是为数组或类数组对象量身定做的,而each可以应用于全部对象。