In this JavaScript example, the snippet provided is for educational purposes and does not include validation. After defining the variable 'isBetween' within the buildBoundDetector() function, it raises questions about how passing a number through variable 'f' works in the code.
function buildBoundDetector( lowerBound, upperBound ) {
var isBetween = function(number){
if(lowerBound <= number && number <= upperBound){
return true;
}
return false;
}
return isBetween;
}
var f = buildBoundDetector( 1, 100 );
f(45);