Questions tagged [underscore.js]
Underscore is a library for JavaScript that provides functional programming support.
51 questions
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Deep custom AngularJS Filter
I need to filter projects using a searchbar, it should filter all properties of the projects with a few exceptions. It's working, but it's extremely slow, where can I make optimizations?
The "_" is ...
- 115
5
votes
5
answers
17k
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Optimizing a nested for loop over JS array of objects
NOTE: I'm bringing this question up in code review rather than stack overflow since I already have a working solution. I just am looking for ways to do it better.
I have two arrays. One is an array of ...
- 161
4
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1
answer
2k
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My first animated data grid with Vue.js
Because this is my very first attempt to create a data grid with Vue, I would like to know about all misconceptions used in my approach. Whomever points to the most important shortcoming / weakness in ...
user145018
2
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0
answers
160
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4
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1
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118
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Convert object with 'long.property.name' property to object tree
I want to transform such object from:
foo = {
42: 'foo',
'a.b.c[0].42': 'bar',
'a.b.c[0].43': 'zet',
'a.d.c[0].42': 'baz'
}
To:
...
3
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0
answers
476
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Two reimplementations of the Underscore _.reduce function
I am working on rewriting the underlying code for some Underscore.js functions. Re-writing the reduce function has been causing a lot of headaches. I have been able to re-write it two different ways, ...
- 131
2
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1
answer
291
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Shipping calculator consisting of one field
A made a shipping calculator, which consists of one field that is validated.
jsFiddle
HTML:
...
- 311
1
vote
1
answer
212
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Retrieve unique child objects from an array
I'm using TypeScript but this example is in plain JavaScript. I have a class rank with a child-class master. I need an ordered ...
- 337
1
vote
1
answer
668
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Characters set permutations with repetitions
The code bellow generates all the permutation(with repetitions) for given character set. Is there any better(simpler, more performant) way to do that?
...
- 819
1
vote
1
answer
162
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Grouping an array by postId and userId
I've got this kind of data:
[
{ userId: 1, postId: 1, ... },
{ userId: 1, postId: 2, ... },
{ userId: 2, postId: 3, ... },
...
]
And I need to group them ...
- 251
1
vote
1
answer
231
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jQuery calendar plugin (using underscore templates)
I put together a jQuery plugin that displays a month of dates using underscore templates. When the template has been populated and displayed in the UI, a user can click on a date which sends a request ...
- 179
4
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0
answers
107
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Backbone learning piece, Movie Application using Views, Collection, Models, Routes and Localstorage
I have created a Backbone Movie app as part of a learning exercise, the app is hosted on codepen although I actually have it built on my local but thought this approach would be handier for code ...
- 233
4
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3
answers
168
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Genetic Drift Simulator - Follow Up
This question is a follow-up of a previous question of mine: Genetic Drift Simulator.
Following the advice given in the last question, and some more general improvements, the code has been slimmed ...
- 12.1k
7
votes
1
answer
47k
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Merging two arrays of objects with different keys/properties [closed]
I have two different arrays:
...
- 173
3
votes
1
answer
13k
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Aggregate sum by month
I have JSON data:
var data = [ { dat: 'timestamp', val: 10 }, { dat: 'timestamp', val: 20}, (...)]
Data contains objects with timestamp and value, can be more ...
- 131