You can use the JavaScript Math object's .random() method to generate a random number between two values, but because it returns a (pseudo) random floating-point number between 0 and 1 (but not including 1), you'll need to perform some additional operations on it to scale it to your required range.
To generate a random integer between two values x and y use the code shown below:
Math.floor((Math.random() * y) + x);
x being the lowest value, and y being the highest value.
For example if you wanted to generate a random integer between 1 and 8, you would use:
Math.floor((Math.random() * 8) + 1);
The Math.floor() function returns the largest integer less than or equal to the passed argument.
If the lowest random integer that you require is 0, you can simplify the statement as shown below:
Math.floor(Math.random() * max);
To generate a random floating-point number between two values x and y you would use the code shown below:
return Math.random() * (max-min) + min;
More Java Script Code:
• Object-Oriented JavaScript
• Java Script Code for Directory File List
• Password Protection Using the JavaScript Cookie Method
• JavaScript Code to Restrict Keyboard Entries
• Easy Fading Text Banner Code
• Easy Code for Date Count Down
• Java Script to Dynamically Add, Remove, and Change Items in a Select List
• Java Script Code to Calculate Speed / Distance of Falling Object
• Create a Mouse Click Sound Effect
• Binary Subtraction with Example JavaScript Code