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Results tagged with javascript
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user 59481
JavaScript is a versatile, high-level programming language. It is the programming language in all browsers.and can be used for back-end programming with node.js. Use this tag for questions regarding vanilla JavaScript; optionally tagged with an ECMAScript version. If you are using a preprocessor such as TypeScript please tag with that too.
3
votes
Accepted
Add many objects to a collection in a JavaScript object
Before I answer your question, I want to clean some things up first.
this[listField]={
'formField':formField,
'fieldType':fieldType
}
Whoa. You are creating an entire new property here …
- 13.3k
2
votes
Input/character validation on an input-element
Change.. all the objects!
No, don't do that. Downgoat already explains why. This will touch every object. I shouldn't be able to do this:
var foo = {
bar: "hello world"
};
foo.validate(...);
…
- 13.3k
3
votes
Display or hide drawer with onClick
Joseph the Dreamer already provided a great review, so I don't have much to say.
Reduce DOM searching calls
You are calling document.getElementById quite a few times in this code. While it is a ve …
- 13.3k
4
votes
Reversed Binary Numbers in JavaScript
prompt("Please enter a decimal number");
is a little confusing to me. I thought you wanted a number with a few decimal digits on it.
It might make more sense to say "Please enter a base 10 number"
…
- 13.3k
2
votes
Searching all object property values inside Array.prototype.filter callback
JavaScript already has a type of loop called for/in loop. It's syntax is this:
for(var key in object) {
}
Where key is a variable that will iterate through all the properties/keys of object. …
- 13.3k
5
votes
Accepted
Create folder and export resolution ratios for artboard
D.R.Y.
That is the main problem about your code: you are repeating yourself in many, many places.
For example, you are repeating yourself here:
var folder0 = Folder(folder + "/Wallpapers");
if(!f …
- 13.3k
11
votes
Function that abbreviates a number (e.g. 1202 => 1.2K)
Your function does not entirely work as you would expect for larger numbers.
I did some testing of your code in my browser's console and I came across this:
> abbrNum(1234567890123)
"1.2T"
> abbrNum …
- 13.3k
3
votes
Accepted
Sorting variables for human weight/length calculations
weightFemale.length) {
This looks better because then someone is just quickly looking over your code won't get tripped up and think that weightFemale is actually an object (yeah, everything is an object in JavaScript …
- 13.3k
10
votes
A simple JavaScript library for arrays
for (var index in originalArray) {
In JavaScript, the for in loop is almost always used only with objects. … And yes: while an array in JavaScript is still technically an object, this is bad practice.
It would be better practice to use a normal for loop to iterate through an array. …
- 13.3k
4
votes
Countdown script
Your indentation is really, really bad. I recommend copying and pasting this code into JSFiddle and then hitting the TidyUp button at the top.
This will go through and add proper indentation to your …
- 13.3k
2
votes
Accepted
Advent of Code - Day One
upOccurrences = floors.match(new RegExp(upFloorSymbol, "g")).length;
var downOccurrences = floors.match(new RegExp(downFloorSymbol, "g")).length;
return upOccurrences - downOccurrences;
Note that JavaScript … Splitting an array into the same array
var chars = floors.split('');
In JavaScript, strings are just like arrays with the exception that strings are immutable. …
- 13.3k
3
votes
Accepted
Checking if a tag is on the screen
if (box.left > 0) {
if (box.left >= window.innerWidth) {
return false;
}
}
This seems a little redundant: the innerWidth is going to be greater than 0, so why do you need to condit …
- 13.3k
9
votes
Accepted
Checking if a Chess space has been attacked
I say "makeshift" because JavaScript does not have native support for these values. …
- 13.3k
6
votes
Check whether string ends with string
Is there a more idiomatic approach for writing such a basic function? Would slicing be more appropriate? The naming can probably be improved.
The other answers have already provided great informa …
- 13.3k
2
votes
Negative factorial in JavaScript
Tail-call optimization
This is a problem line:
return num * factorialize(num - 1);
Every time this line is run, the execution of this function is "stopped" while the execution of this new factoria …
- 13.3k