For today I will be writing another one of my quick little posts on lodash, just for the hell of it. My approach with lodash is that when I write a post on a certain lodash method, I am not just writing about lodash, but a certain way to preform a certain task often involving arrays, or array like objects. So under that light I think it is a good idea to write some content on the topic. Anyway todays post will center around the _.compact method that can be used to quickly remove false values away from an array. Covering the method by itself is not that involved, but it can branch off into some additional topics when it comes to doing the same with just plain old vanilla js.
For a basic example of this say we just have a simple array with some values in it. Some of these values will evaluate to false if you where to convert them to boolean, others will not. Say you want to just remove all the values that will evaluate to false, and keep the ones that do not. there are many ways to go about doing this, but if lodash is part of your projects stack the _.compact method can be used to make quick work of this. There are of course other methods in lodash, and doing so with plain old vanilla js is not big deal as well, so lets take a look at some examples.
So of course lets start of with using lodash _.compact method first, doing so is stupid simple just call the method passing the array that you want false values removed, and the desired array will be returned.
It is not to hard to make a vanilla js solution using Array.forEach, and drop the use of lodash for this kind of task. It is true that all we are doing here is that we are looping over the contents of an array, and applying a condition for each element, if that condition is true, the element is then pushed to a new array.