[help] Javascript Random Generator

[mamamiaw]

Hi all, Sorry to bother u all, I think i previously post about the quiz script, and i read and research abit here and there,

anyway i manage to write some but found some difficulties,especially about random generator..

I have this several 'set' of question and answer, and i like to view'em random
(e.g: refresh---> What is 1+1=?...with option n aswers, refresh---> What is 1+1=?...with option n aswers, refresh---> What is

1+1=?...with option n aswers, ...etc)

questionarray[0]  ='What is 1+1=?.' 
answer[0]  ='1' 
Adistract[0]  ='2' 
Bdistract[0]  ='22' 
Cdistract[0]  ='11' 
Ddistract[0]  ='0'  
questionarray[1]  ='what is the color of the sky?.' 
answer[1]  ='C' 
Adistract[1]  ='red' 
Bdistract[1]  ='yellow' 
Cdistract[1]  ='blue' 
Ddistract[1]  ='purple'  
questionarray[2]  ='cow is =?.' 
answer[0]  ='D' 
Adistract[0]  ='Tank' 
Bdistract[0]  ='President' 
Cdistract[0]  ='Weapon' 
Ddistract[0]  ='Animal'  
questionarray[3]  ='What is 2+2=?.' 
answer[0]  ='A' 
Adistract[0]  ='4' 
Bdistract[0]  ='22' 
Cdistract[0]  ='11' 
Ddistract[0]  ='0'  .....etc

and also if any of master n gurus here have better suggestion, both on the question array and get (viewing method on browser),

i'll be very thankful.
Anyway, thanks in advance.

Best Regards

~M~

[Jesdisciple]

This sounds like it would be better suited to PHP...

Also, object-orientation would be much more appropriate than your current approach. And I think you're confusing yourself in that anyway...

Here's a randomizer, where answers is the array of such. EDIT: Note that this is intended to go inside a for-loop.

var index = Math.floor(Math.random() * answers.length);
var current = answers.splice(index, 1);//Remove the element so it won't be used again.
//Build the question from 'current'.

It's a good idea to copy the array (var copy = answers.concat();) and reassign it when you're done building the question.

Ask questions.

[mamamiaw]

Hi thanks for your kind reply ^_^

Heres the complete questions:

for this quiz
There will be no ask the audience or phone a friend
This game will be a Pure javascript , played offline.
The contestant (the student) will only see the screen, they're not allowed to have keyboard or mouse.

Anyway, here i upload the thing that i create...to explain the situation.

DOWNLOAD HERE


As u can see...on the javascript file (millquest.js) , i only manage to create a set....
which are:
stemarray[0] ='Monas adalah singkatan dari:'
answer[0] ='B'
adistract[0] ='Monumen Naskah'
bdistract[0] ='Monumen Nasional'
cdistract[0] ='Museum Nasional'
ddistract[0] ='Museum Naskah'

...all till number 7

But what i want to create are:

for question number 1-3 (which the contestant will win 100 point to Hadiah A), they consist of 75 questions that will be randomly displayed each time the quiz begin

for question number 4-5 (which the contestant will win 100 point to Hadiah B), they consist of 75 questions that will be randomly displayed each time the quiz begin

for question number 6 (which the contestant will win 100 point to Hadiah C), they consist of 75 questions that will be randomly displayed each time the quiz begin

for question number 7 (which the contestant will win 100 point to Hadiah D), they consist of 75 questions that will be randomly displayed each time the quiz begin

for question number 8 (which the contestant will win 100 point to Hadiah E), they consist of 75 questions that will be randomly displayed each time the quiz begin


So sorry but i don't understand PHP at all...(not a real programmer myself)

Thanks for your answer, if u don't mind, can u explain a bit about it...i mean i've read about the math.random, but not really understand of the usage and application to my quiz ^_^

And also...pardon my bad english...^_^

Thanks alot...

Best regards

[Jesdisciple]

EDIT: And forget the PHP comment; PHP is a server script which you indicated you can't use in the other thread.

Math.random returns a pseudo-random number greater than or equal to 0 and less than 1 (0 <= X < 1). Multiplying that number by answers.length and passing the product (multiplication result) to Math.floor gives an integer (whole number) within the range [0 <= X < answers.length]. That integer can then be used as a random index to the answers array.

The Array.splice (link) method then removes 1 element from the array at the specified index and returns it to the current variable.

And you're definitely doing better with my language than I am with yours (because I don't have a second language to speak of). But what is your language? I need to translate some of the terms involved with the game to better understand it.

[mamamiaw]

Thanks for the explanation....^_^

My first language is indonesia...i'm an indonesian, asian to be general
Which one that u need to translate?.. i can translate it to you ^_^

Thanks alot

[Jesdisciple]

I guess "Hadiah" means "Section"? What are the related details?