Random Number Generator within a Range

This snippet generates a random integer between a specified minimum and maximum range (inclusive). It uses JavaScript's Math.random() function combined with Math.floor() for the random number generation.

// Define the range
const minNum = 1;
const maxNum = 100;

// Generate a random integer within the range
const answer = Math.floor(Math.random() * (maxNum - minNum + 1)) + minNum;

// Output the random number
console.log(answer);

Explanation

1. Math.random():

   • Generates a random decimal number between 0 (inclusive) and 1 (exclusive).

2. Math.random() * (maxNum - minNum + 1):

   • Scales the random decimal to the size of the range.

3. Math.floor():

   • Rounds down to the nearest whole number, ensuring the result is an integer.

4. + minNum:

   • Offsets the range to start at minNum.

Example Calculation

If Math.random() generates 0.456, the calculation works as follows:

1. 0.456 * (100 - 1 + 1) = 45.6
2. Math.floor(45.6) = 45
3. 45 + 1 = 46

The result would be: 46.

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Use Cases

This logic is helpful for:

• Random number games.
• Generating IDs within a specific range.
• Any functionality requiring a random integer within defined bounds.

Output

After running the code, the generated random number will appear in the console.