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Please ignore my syntax.
This is just an example if this is a bad idea.
let's say I have select with 50 options but instead of typing out options 50 times.
would it be a good idea to use js and give it an array variable.
run through the variable.length then append it into html.
Is it bad to use js like this though and why?
No issues. Now clients are way too much powerful than they were earlier before.
So, utilizing some of its power never harms.
Now the problem .. rendering template on client is not an issue ..Angular, React all does the same.
While you are doing only a little which may consumes less than < 1 ms. So , just go ahead.
it is a better practice.
You are a programmer, you will never need to type out options 50 times :)
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I am trying to code in Pine Script but as you may know it doesn't make sense at all, I can't figure it up how it lifecycle works.
Is there an alternative way to code for it? C sharp, JavaScript, Python and .... anything?
No, that's not possible.
The way that Pine Script works is very different from classical programming languages.
To gain an understanding of how it works, you should first read about the Execution model of Pine.
Another excellent resource is PineCoders.
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In Javascript, is it acceptable to rename built in functions. For example, in my code, I use document.querySelector() tons of times. This is extremely long and tedious to type every single time (even with autocomplete from the IDE's side). Therefore, I decided to create a new function with a shorter name like the following:
let qs = selector => document.querySelector(selector);
Is this an acceptable practice in the JS community? Is this considered bad code? If so, why? Additionally, if doing this is alright, what are some drawbacks?
Thanks.
No.
Someone is going to come behind you to edit your code.
They will then have to track down your renaming function to actually see what it does.
Create an snippet in your IDE if it’s that much of an issue for you.
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Hello guys I would like to use reactJS but it's not clear for me why do I have to use it, I already use Jquery and it works fine for me, I can use Java script and manipulate all the DOM the issue here is why? Why should i use it and what kind of things I can do with reactJS that I could not make with Jquery.
I hope you can give a hand or simple examples because I'm very confused thank you.
One of the biggest advantages is the component system for writing code. You can build all your html in blocks and then just import those blocks where you need them. You can also modify how those blocks are loaded using the component lifecycle for added control and optimisation.
These methods really help structure how you perceive information flow throughout your site.
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Is this a good practice? I mean is it good if all of my codes(behavior,presentation,structure) are inside on my .js(for example, since I'm making a website) file? Why? Sorry for my bad english.
Obviously it is not good practice, the recommended practice is to split all the code into its designated file. The simplest method is to use multiple script tags with src.
If you're really interested in dividing up your code efficiently, I would suggest learning BoostrapJS or AngularJS.
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This will be a bit strange question, but..
I am planning to use jQuery/knockout to write a dynamic custom wizard
which will depending on different scenarios will load different templates/UI logic to the user.
Question.
Should I take into consideration memory usage in this case? or should I manually unload/clean up/save to the server pieces of UI which is not in use??
PS. Current version of wizard will have 5-7 steps.
You should write your app the best you can functionally and then determine if memory is even an issue. If it is, then you can take steps to reduce it's memory footprint but odds are you'll be fine. For instance, go look at what a site like Facebook's memory usage, a site that everyone and their grandmother uses.