Question 233493 in Javascript Question posted in
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Javascript – how to make a function which return bmi?

I want a function which return the BMI. If my weight is 65 and my height is 1.8 so what will be my round BMI.

function bmiCalculator(weight, height) {
  var bmi = 65/(1.8*1.8);
  bmi = Math.round(bmi);
}

bmiCalculator();

I have tried so many time but I get 15 BMI and the expected is 20.
Can some body explain what is going behind the scene?

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2

Answers


  1. 0

    BMI is calculated by weight in kg dividing by height in meters multiplied by height in meters

    const weight = 65;
const height = 1.8
const bmi = weight / Math.pow(height, 2);
console.log(bmi); // 20.061728395061728
console.log(parseInt(bmi)); // 20
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  2. 0

    You’re on the right track, just make sure to use the function parameters and call it.

    Also, name your params appropriately.

    /**
 * Compute BMI and round the result to an integer.
 *
 * @param {number} weightInKg - Weight in kg
 * @param {number} heightInMeters - Height in meters
 * @returns {int} rounded BMI result
 */
function bmiCalculator(weightInKg, heightInMeters) {
  return Math.round(weightInKg / (heightInMeters ** 2));
}

console.log(`BMI: ${bmiCalculator(65, 1.8)}`); // 20
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