JavaScript: Get a random number in the specified range

JavaScript fundamental (ES6 Syntax): Exercise-33 with Solution

Random Number in Range

Write a JavaScript program to generate a random number in the specified range.

• Use Math.random() to generate a random value, map it to the desired range using multiplication.

Sample Solution:

JavaScript Code:

//#Source https://bit.ly/2neWfJ2 
// Define a function named random_Number_In_Range that generates a random number within a specified range.
const random_Number_In_Range = (min, max) => Math.random() * (max - min) + min;

// Test the function with different range values and output the results.
console.log(random_Number_In_Range(2, 10));  // Output: Random number between 2 and 10
console.log(random_Number_In_Range(1, 5));   // Output: Random number between 1 and 5
console.log(random_Number_In_Range(-5, -2)); // Output: Random number between -5 and -2
console.log(random_Number_In_Range(0, 1));   // Output: Random number between 0 and 1

Output:

5.897778190464821
1.1596294444724986
-2.644812110240778
0.5654096114937668

Visual Presentation:

Flowchart:

Live Demo:

See the Pen javascript-basic-exercise-1-33 by w3resource (@w3resource) on CodePen.

For more Practice: Solve these Related Problems:

• Write a JavaScript program that generates a random floating-point number within a specified range using Math.random().
• Write a JavaScript function that returns a random number between two given bounds, inclusive of the lower bound.
• Write a JavaScript program that validates the range inputs and then produces a random number within that interval.

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