This challenge is intended to utilize the JavaScript language as a means of solving a problem. However, language-specific challenges are generally discouraged on CG.
-1
votes
1answer
172 views
Compressing a DNA-like string [closed]
my app is multiple choice test, where for each question the response results in a 4 letter string "eg" GTAC or ATGC or CATG, etc. There are always just 24 questions. so the final result is something ...
0
votes
4answers
203 views
Find the longest word in a sentence without using regex [closed]
Have a function LongestWord(sen) take the sen parameter being passed and return the largest word in the string. If there are two or more words that are the same length, return the first word from the ...
0
votes
3answers
372 views
javascript: smallest code to convert seconds to time [closed]
Given seconds like 11728, write the smallest javascript function that returns a string like 3hrs. 15min. 28sec.
signature textTime([int] t,[bool] z,[bool] m)
t is the time like 11728 and you can ...
8
votes
11answers
1k views
Make StackOverflow Explode (bookmarklet)
Sometimes people get frustrated on the StackExchange network (specifically SO).
Your task is to create a bookmarklet that causes StackOverflow to explode/implode/destroy in some fashion. This will ...
0
votes
0answers
84 views
Code-Golf on JavaScript Brainfuck function [duplicate]
Give the tags I have on here, I don't need to explain what this function does...
function b(k,a){_="",j=0,x=0,y=0,z=0,m={},n=[],i={},o={};for(y in ...
7
votes
4answers
455 views
Display a bézier curve in the browser
The goal is to display a bézier curve in any classical browser (except maybe old IE versions, because... are they really browsers?) client side.
Rules:
You must provide one or more files (or their ...
7
votes
2answers
214 views
Write the shortest text getter/setter on an element for the DOM
Just like jQuery's $.fn.text, write one or two functions that can get and set the text on an element.
You can't use textContent or innerText, and even less innerHTML.
Plain javascript. No DOM ...
-2
votes
1answer
128 views
IPv4 “in subnet” function [closed]
Implement the following JavaScript method as short as possible:
function same_subnet(ip_a,ip_b,sn_mask)
{
}
It should get 2 IP addresses and a subnet mask. It should return true if ip_a and ip_b ...
1
vote
10answers
683 views
Convert JSON string to Key / Value Arrays
Convert JSON (key/value pairs) to a native arrays of keys & values, in your language.
var X = '{"a":"a","b":"b","c":"c","d":"d","e":"e","f":"f9","g":"g2","h":"h1"}';
The value array could be ...
2
votes
8answers
404 views
Implement String.prototype.toLowerCase()
Implement String.prototype.toLowerCase()
Description
The toLowerCase method returns the value of the string converted to lowercase. toLowerCase does not affect the value of the string itself.
...
11
votes
12answers
1k views
Javascript: Create a 10x10 array of 1s
Obviously this challenge would be trivial with separate functions and libraries, so they aren't allowed.
Your code must conform to an ECMAscript specification (any spec will do), so no ...
1
vote
2answers
748 views
Shortest code to check if a number is in a range in JavaScript
This is how I checkout to see if a number is in a range (in between two other numbers):
var a = 10,
b = 30,
x = 15,
y = 35;
x < Math.max(a,b) && x > Math.min(a,b) // -> ...
0
votes
4answers
698 views
Make an HTML page goto infinite loop?
Write a code using HTML, JavaScript, jQuery to make the page go into infinite loop.
Restrictions:
No looping or control structures of javascript and jQuery allowed. You can only use alert, events, ...
18
votes
31answers
4k views
Tips for golfing in JavaScript
What general tips do you have for golfing in JavaScript? I'm looking for ideas that can be applied to code golf problems in general that are at least somewhat specific to JavaScript (e.g. "remove ...
2
votes
2answers
842 views
Smallest Javascript CSS Selector Engine
Create a small acceptably efficient JS CSS selector engine. Standard css 2.0 properties should be supported in Firefox 3.0+,Safari , Opera, IE7+, and extra brownie points for IE6 support.
Smallest ...
26
votes
2answers
2k views
What can you do in a 4k data URI?
Bounty is over, thephpdeveloper wins with Conway's Game of Life
The web platform today is advancing at a rapid rate. Features like CSS3 animations, transforms, drop shadows and gradients, ...
8
votes
4answers
9k views
Shortest URL regex match in JavaScript
Create the shortest regular expression that will roughly match a URL in text when run in JavaScript
Example:
"some text exampley.com".match(/your regular expression goes here/);
The regular ...
