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Tag: random

Picking a random item from array with equal distribution

I want to pick a random item from an array at random. Is the way to go, but as far as I know this will cause a Uniform distribution to occur which means that the average is (lowbound+upperbound)/2 translated to an array with 10 elements the lower bound is the first element and the upper bound is the last element

Random image from html on button click

I am trying to make a script that will take the images from one div element and put it to div rndmImage randomly on button click, I should see images when document is loaded, but the new div where images should go after click must be empty until click heapends. And I need only JavaScript, no jQuery, alse i can

Find remaining indexes and storing them as values

I’m making a small game. You have to find the ball under a randomized cup. First the images are stored in a nodeList. Then the winning cup is calculated randomly from the length of the nodeList. My problem: After the random value for winningCup has been calculated I don’t know how to find the other two indexes from the ‘images’

JS generate random boolean

Simple question, but I’m interested in the nuances here. I’m generating random booleans using the following method I came up with myself: Whenever random() shows up, it seems there’s always a pitfall – it’s not truly random, it’s compromised by something or other, etc. So, I’d like to know: a) Is the above the best-practice way to do it? b)

PHP/JavaScript random number

I am playing around with JavaScript and trying to choose some random images. What I’m actually trying to do: I have $totalsixes = rand(1,6); in PHP, and let’s say that chose 4. Then in JavaScript I want to show 4 images with the number 6 and 2 others with random numbers from 1-5. Here’s what I’ve tried so far: as

Custom linear congruential generator in JavaScript

I am trying to create a custom linear congruential generator (LCQ) in JavaScript (the one used in glibc). Its properties as it’s stated on Wikipedia are: m=2^31 , a=1103515245 , c=12345. Now I am getting next seed value with Although the generator seems to work, but when the numbers are tested on canvas: They seem to be horribly biased: http://jsfiddle.net/7VmR9/3/show/

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