I’m looping through an array of objects, each of which has a nested array of objects: I want to add the same key value pair to all of the objects within the nested array. In other words, all of the objects in item.values should have a new key value pair added, call it newpair. I’d like to clone it…
Tag: lodash
Terse way to intersperse element between all elements in JavaScript array?
Say I have an array var arr = [1, 2, 3], and I want to separate each element by an element eg. var sep = “&”, so the output is [1, “&”, 2, “&”, 3]. Another way to think about it is I want to do Array.prototype.join (arr.join(sep)) without the result being a stri…
Iterate an array as a pair (current, next) in JavaScript
In the question Iterate a list as pair (current, next) in Python, the OP is interested in iterating a Python list as a series of current, next pairs. I have the same problem, but I’d like to do it in JavaScript in the cleanest way possible, perhaps using lodash. It is easy to do this with a simple for l…
Best way to reset all values in an Javascript object
My javascript object looks something like: Upon some events in my code, I would like to reset these values to undefined like below: I use libraries like lodash, however i don’t see any function that would perform this. I know how to do this manually, but I was wondering if there is a “Best practic…
Update if exists or add new element to array of objects – elegant way in javascript + lodash
So I have an array of objects like that: uid is unique id of the object in this array. I’m searching for the elegant way to modify the object if we have the object with the given uid, or add a new element, if the presented uid doesn’t exist in the array. I imagine the function to be behave like
How can I remove an element from a list, with lodash?
I have an object that looks like this: I have lodash installed in my application for other things. Is there an efficient way to use lodash to delete the entry: {“subTopicId”:2, “number”:32} from the obj object? Or is there a javascript way to do this? Answer As lyyons pointed out in th…
Convert returned JSON Object Properties to (lower first) camelCase
I have JSON returned from an API like so: To keep this consistent with my code style (camelCase – lower case first letter) I want to transform the array to produce the following: What’s the easiest/best way to do this? Create a new Contact object and iterate over all the contacts in the returned a…