Check if a value is within a range of numbers

user_407382 0
Viewed 385236

I want to check if a value is in an accepted range. If yes, to do something; otherwise, something else.

The range is 0.001-0.009. I know how to use multiple if to check this, but I want to know if there is any way to check it in a single if statement.

if-statement javascript
8 Answers

If you're already using lodash, you could use the inRange() function: https://lodash.com/docs/4.17.15#inRange

_.inRange(3, 2, 4);
// => true

_.inRange(4, 8);
// => true

_.inRange(4, 2);
// => false

_.inRange(2, 2);
// => false

_.inRange(1.2, 2);
// => true

_.inRange(5.2, 4);
// => false

_.inRange(-3, -2, -6);
// => true
user_6792400

If you want your code to pick a specific range of digits, be sure to use the && operator instead of the ||. 

if (x >= 4 && x <= 9) {
  // do something
} else {
  // do something else
}

// be sure not to do this

if (x >= 4 || x <= 9) {
  // do something
} else {
  // do something else
}

user_86518650

You must want to determine the lower and upper bound before writing the condition

function between(value,first,last) {

 let lower = Math.min(first,last) , upper = Math.max(first,last);
 return value >= lower &&  value <= upper ;

}
user_111925500

const inRange = (num, num1, num2) => Math.min(num1, num2) <= num && Math.max(num1, num2) >= num;

Could be like this if you want to make inRange inclusive and not depend on order of range numbers (num1, num2).

user_63101220
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