Sometimes you may need to flatten a deeply nested array into a single level array. You can achieve this using the
However, this method may not work on older browsers. An alternative way is to use recursion.
Here’s an example of how you can use recursion to flatten an array:
You can merge objects using the
Object.assign() method. However, this method only works for shallow objects. To merge nested objects, you can use a library like lodash or write your own recursive function.
Here’s an example of how you can merge two nested objects:
filter() method allows you to filter an array based on a condition, while the
map() method transforms each element of an array into a new element.
However, you can combine these two methods into a single
reduce() method. Here’s an example of how you can use the
reduce() method to filter and map an array:
You can filter an object based on a condition using the
Array.prototype.filter() methods to filter keys in an object.
You can create a new object based on an existing object by mapping its keys and values using the