Motyar

@motyar

Freelance Web Developer

Static Web Hosting, made easy

Apr 7, 2010

Go random with JavaScript

One day, you must need code to get a random number, or values, in your program. Suppose you code for a game such as backgammon requires a roll of some dice on each move. Since there are 6 numbers on each die, you could calculate each roll by finding a random number from 1 to 6 for each die.
Today you will learn going random with JavaScript.

idea

In the dreamnight animation we needed random positions and random colors for bubbles.

Math.random()

The random() method returns a random number between 0 and 1.

Generating random number less than M

 var randomnumber = Math.floor(Math.random()*(M + 1));
This will generate no between 0 and M

Generating random number between higher and lower

 parseInt(rand_no = Math.floor((higher - (lower - 1)) * Math.random()) + lower); 

Generating random colors

 'rgb('+Math.floor(Math.random()*255)+','+
        Math.floor(Math.random()*255)+','+ 
        Math.floor(Math.random()*255)+')'; 
 
OR if you need it in hex - 

 Math.round(0xffffff * Math.random()).toString(16) 

I hope now you are able to solve your problem you googled.
Enjoy!!

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