How to limit a number between a min/max value in JavaScript ? Last Updated : 23 Sep, 2024 Comments Improve Suggest changes Like Article Like Report We can limit a number between a min/max value using the is-else condition and using the Math.min and Math.max methods of JavaScript.Below are the approaches to limit a number between a min/max value in JavaScript:Table of ContentUsing the if-else conditionUsing the Math.min() and Math.max() methodsUsing the if-else conditionThis JavaScript function checkNumber(n) ensures that an input number n is within the range of 0 to 100.Convert to number: The input n is converted to a number using Number(n).Check below 0: If n is less than 0, a message is logged to the console instructing the user to enter a number between 0 and 100, and the value is set to 0.Check above 100: If n is greater than 100, it logs the same message and sets n to 100.Valid number: If n is valid, it logs the entered number.Example: The below code uses if-else conditions to limit the value of the entered number. JavaScript function checkNumber(n) { n = Number(n); if (n < 0) { console.log('Type number between 0-100'); n = 0; } else if (n > 100) { console.log('Type number between 0-100'); n = 100; } else { console.log('Valid number: ' + n); } } checkNumber(50); OutputValid number: 50 Using the Math.min() and Math.max() methodsThe approach ensures a number is within the range [0, 100] by using input conversion and value clamping:Input Conversion: checkRange() converts the input into a number using Number() to handle possible non-numeric values.Range Clamping: It applies Math.max(0, n) to ensure the number is at least 0 and Math.min(100, n) to ensure it doesn’t exceed 100.Test and Output: checkNumber() tests this logic by passing 150, which is clamped to 100. Both the original and clamped values are logged for comparison.Example: The below example illustrates the use of the Math.min() and Math.max() methods to limit the entered number. JavaScript // Function to check if a number is within the range [0, 100] function checkRange(number) { let n = Number(number); n = Math.min(100, Math.max(0, n)); return n; } function checkNumber() { const inputNumber = 150; const rangedNumber = checkRange(inputNumber); console.log("Original number: " + inputNumber); console.log("Number ranged to: " + rangedNumber); } checkNumber(); OutputOriginal number: 150 Number ranged to: 100 Comment More infoAdvertise with us P PranchalKatiyar Follow Improve Article Tags : JavaScript Web Technologies JavaScript-Questions Similar Reads Calculate current week number in JavaScript Calculating the current week number involves determining which week of the year the current date falls into. 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