Javascript - SyntaxError: Illegal return statement 如何解决？

Question

I can't understand where did I made a mistake, but I'm getting the following errors in the code below :

Uncaught SyntaxError: Illegal return statement
SyntaxError: return not in function

Code:

function bmiCalculator(weight, height) {
    var bmi = weight / Math.pow(height, 2);
    return Math.floor(bmi);
}
var bmi = bmiCalculator(65, 1.8);
if (bmi < 18.5) {
    return 'Your BMI is ' + bmi + ' so you are underweight';
}
if (bmi > 18.5 && bmi < 24.9) {
    return 'Your BMI is ' + bmi + ' so you have a normal weight';
} else {
    return 'Your BMI is ' + bmi + ' so you are overweight';
}

I'm a total newbie so i appreciate an explanation.

Answer 1

You cannot use a function with the return parameter. First apply math.floor (bmi) under a new variable name. then return this variable. Like This:

function bmiCalculator(weight, height) {
var bmi = weight / Math.pow(height, 2);
var newBmi = Math.floor(bmi);
return newBmi;