I'm trying to check if a number has a 2 decimal place precision. I know how to convert a number to a 2 decimal place precision like this:
var myNumber = 2.456;
var currentNumber = parseFloat(myNumber);
currentNumber = currentNumber.toFixed(2);
console.log(currentNumber);
so If I enter:
but how can I check if the result of my code has a 2 decimal place precision? Thanks a lot in advance!
Parse the number into a string, split by a period and check whether the second item's length is 2:
function isPrecise(num){
return String(num).split(".")[1]?.length == 2;
}
console.log(isPrecise(1.23))
console.log(isPrecise(1.2))
console.log(isPrecise(1))
console.log(isPrecise("1.23")) //works if its a string tooYou can also use a regex:
function isPrecise(num){
return /\d+\.\d{2}/gm.test(String(num));
}
console.log(isPrecise(1.23))
console.log(isPrecise(1.2))
console.log(isPrecise("1.23")) //works if its a string too