All Questions
Tagged with programming-practicesjavascript
42 questions
1vote
2answers
328views
Is it a bad habit to use other class' "private" variables in Javascript
I've gotten this idea in my head that i shouldn't use a libraries variable, if the variable name begins with '_', as it is standard to write private variables that way. But now i'm thinking i'm taking ...
- 143
42votes
9answers
7kviews
Is a JS Boolean having custom properties a bad practice?
In JS you can return a Boolean having custom properties. Eg. when Modernizr tests for video support it returns true or false but the returned Boolean (Bool is first class object in JS) has properties ...
- 551
0votes
2answers
2kviews
Store static data in public folder as json file or directly in .js file?
I'm busy working on a website – somewhat new to this – and I don't quite know where I should store static data: in the public folder as a separate json file, or within the .js file as an object. In ...
33votes
5answers
7kviews
Why do we need enums in dynamically typed languages?
I was reading some code here and saw that an enum is used to store names of html tags. Why do we ever need to do this? What benefit do I get using this strategy? I know that how useful enums are in ...
- 2,186
17votes
4answers
7kviews
Why does Facebook obfuscate the names of CSS classes?
If you look at the source code of a website such as Facebook, you'll see many classes as such: <div class="_cy6 _2s24"><div class="_4kny"><div class="uiToggle _8-a _1kj2 _4d1i _-57 _5-...
- 335
42votes
5answers
5kviews
How to avoid typical "dynamic language mistakes"?
I've recently poured a couple of hours into JavaScript because I wanted to benefit from the massive userbase. Doing that I have noticed a pattern that most people attribute to dynamic languages. You ...
- 531
11votes
1answer
5kviews
Is it bad practice to require the same module in multiple files in Javascript?
Let’s say I have three files, all of which import a fairly large module. But I’ve divided them because they have different functions. Now each of the JavaScript files needs an initial statement like ...
- 121
43votes
6answers
14kviews
Should I place functions that are only used in one other function, within that function?
Specifically, I'm writing in JavaScript. Let's say my primary function is Function A. If Function A makes several calls to Function B, but Function B is not used anywhere else, then should I just ...
- 533
32votes
5answers
2kviews
Why do code-bases in n-tier development have an equal amount of, if not more, JavaScript code now?
I've been doing web programming for a long time now, and somewhere, I lost track of why we are doing what we are doing today (or how did we come to do things this way)? I started out with basic ASP ...
- 539
0votes
3answers
125views
Should we test private data (static objects in this case) to make sure it maintains its structure?
I had a discussion at work about whether to unit test a private static object we're using as data for a public component. const data = { 45: { name: 'John' }, 2: { name: 'Patricia' }, 27: { name: '...
4votes
1answer
18kviews
Why is it common to put an underscore before a method in JavaScript? [closed]
For example, I noticed that in the jQuery UI widget factory, methods like _init, _start, _on, ect.
34votes
1answer
39kviews
I know JavaScript really well, but i bomb coding interviews [closed]
So I'm currently on a hunt for a new position as a Front-End Developer. I know JavaScript very well and can wax poetically about Closures, Currying, Prototypal Inheritance, Design Patterns, App ...
- 473
1vote
3answers
4kviews
Good practice for JavaScript (ES6) data objects
I see very often to pass around unnamed data objects in JavaScript, e.g. { a: 1, b: 2}. Is it a good practice or is better to make a simple data class for that like in other languages: class ...
- 186
0votes
1answer
682views
Why "typeof null == object" will stay in javascript?
I was reading a article about front-end development on Medium, when I stumbled upon an interesting piece of information, which is as follows: The type of a variable can be determined by using the ...
user226831
3votes
1answer
400views
What is the expected performance of While loops using `array.pop()` assignment vs other methods
Recently I was asked to refactor some code that leverages JavaScript's array.reduce() method because other developers felt the code hard to read. While doing this I decided to play around with some ...
