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JavaScript - Accept only numbers between 0 to 255 range?
To accept number in a range and check, use the if else condition.
Example
Following is the code −
function checkRangeDemo(number) { if (number < 0 || number > 255) { return false; } else { return true; } } var number = 55; if (checkRangeDemo(number) == true) console.log(number + " is in range") else console.log(number + " is not in range") var number1 = 350; if (checkRangeDemo(number1) == true) console.log(number1 + " is in range") else console.log(number1 + " is not in range")
To run the above program, you need to use the following command −
node fileName.js.
Here, my file name is demo261.js.
Output
This will produce the following output on console −
PS C:\Users\Amit\javascript-code> node demo261.js 55 is in range 350 is not in range
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