Tagged Questions
9
votes
5answers
2k views
Better way to generate all combinations?
I'm generating all combinations of an array, so for instance, ["a", "b", "c", "d"] will generate:
[
"a", "b", "ab", "c", "ac",
"bc", "abc", "d", "ad", "bd",
"abd", "cd", ...
7
votes
1answer
2k views
Looking for improvements on my jQuery-UI tagging widget
I am looking for any possible improvements on this tagging widget.
I ask for special attention to be paid to my blur handler in the event of a autocomplete option being specified but any ...
7
votes
2answers
377 views
Optimize/Refactor Javascript Unique Array function
This is one idea of implementation:
Array.prototype.unique = function () {
unique_array = [];
for (var i = 0, l = this.length; i < l; i++) {
if(unique_array.indexOf(this[i]) == -1){
...
6
votes
2answers
6k views
Pack and unpack bytes to strings
I need to write a function that "packs" an array of bytes (integers between 0 and 255) into a string. I also need to be able to perform the reverse operation, to get my byte array from the string that ...
5
votes
4answers
255 views
Improve speed for looping through 1,000's of items in javascript?
This is a script I use to count how many items are selected in a form. Currently it loops through the entire form to count how many check boxes are selected, each time a checkbox is clicked. The form ...
5
votes
1answer
113 views
Optimize iterative pixel blending function
Summary
I've created a function that blends tiles on a 2D hexagonal grid with their neighboring tiles based on an image that serves as a "blend mask". It runs, and isn't too intensive, but I feel it ...
4
votes
1answer
53 views
Looping through Radgrid in JS is slow, can this be faster?
I do a single select in one radgrid, and based upon that selection I want to select multiple rows in a different radgrid:
<telerik:RadGrid ID="rgPaymentLines"> <ClientEvents ...
4
votes
1answer
60 views
Code review for a collection manipulation tool in Javascript
As I was working with .NET, I started wondering how I would implement the LINQ methods syntax in Javascript. So here is my first try; is there a more elegant, or more performant, way to write this ...
4
votes
1answer
553 views
How can I optimize my d3 graph visualization?
I've been learning Python for about a year and now I'm trying to improve my Javascript. I wrote this simple d3 visualization that shows your Facebook friends as a force-directed graph. Here's a live ...
3
votes
1answer
259 views
Which is better: the short, clever way, or the long, ctrl+c way?
The code below is equivalent. I can see pros and cons for both versions. Which one is better?
Short version:
character.on("key",function(key){
var action = ({
...
3
votes
2answers
1k views
.hasScroll function, checking if a scrollbar is visible in an element
I have constructed a function that checks whether an element has a scrollbar or not, and can also check individual axes.
I don't know if this works in all major browsers and am unsure about the ...
3
votes
2answers
149 views
More concise way to create a board out of an array?
I have been doing some personal projects for fun and most of them have visual representation of boards (ej: sudoku solvers, chess PGN viewer, etc) and I always end up doing something like this:
var ...
3
votes
2answers
112 views
Javascript function optimization
I created a function that rewrites file names according to the available space on screen:
@{
var index = 0;
foreach (var item in Model)
{
<div class="gallery-item">
<a ...
3
votes
2answers
117 views
Javascript Coding Wager
I have two scripts written by my co-workers for auto-filling a form with information from the facebook graph-api. I am trying to figure out which has been coded in a more efficient style?
This is the ...
3
votes
3answers
162 views
hand optimising javascript selector function
I personally want a small selector function that covers the three common cases
getElementById
getElementsByClassName
getElementsByTagName
It should support contexts and should not support ...
