Added my Javascript BMICalculator code

JavaScript/BMICalculatorCode.js

@@ -0,0 +1,109 @@
+let age = document.getElementById("age");
+let height = document.getElementById("height");
+let weight = document.getElementById("weight");
+let male = document.getElementById("male");
+let female = document.getElementById("female");
+let form = document.getElementById("form");
+
+document.getElementById("submit").addEventListener("click", validateForm);
+
+document.getElementById("clear").addEventListener("click", resetForm);
+
+function validateForm() 
+{
+    temp = checkValidations();
+    if (temp) 
+    {
+        alert(temp);
+        document.getElementById("submit").removeEventListener("click", countBmi);
+    }
+    else 
+    {
+        countBmi();
+    }
+}
+
+function checkValidations() 
+{
+    temp = false;
+    if (age.value === '' || height.value === '' || weight.value === '' || (male.checked === false && female.checked === false)) 
+    {
+        temp = 'Please fill in all of the fields! All Fields are required !';
+    }
+    else if (age.value <= 0 || height.value <= 0 || weight.value <= 0) 
+    {
+        temp = 'Fields can not have negative or zero values';
+    }
+    else if (age.value < 18) 
+    {
+        temp = 'You must be 18 years old or above';
+    }
+    return temp;
+}
+
+function clearResults() 
+{
+    const parent = document.getElementById('results');
+    while (parent.firstChild) 
+    {
+        parent.firstChild.remove();
+    }
+}
+
+function resetForm() 
+{
+    form.reset();
+    clearResults();
+}
+
+function countBmi() 
+{
+    clearResults();
+    let a = [age.value, height.value, weight.value];
+    if (male.checked) 
+    {
+        a.push("male");
+    }
+    else if (female.checked) 
+    {
+        a.push("female");
+    }
+
+    let bmi = Number(a[2]) / (Number(a[1]) / 100 * Number(a[1]) / 100);
+    let result = '';
+
+    if (bmi < 18.5) 
+    { 
+        result = 'You are Underweight! In order to maintain a healthy BMI try to add more nutrient rich food in your diet';
+    }
+    else if (18.5 <= bmi && bmi <= 24.9) 
+    {
+        result = 'Congrats, You are Healthy! In order to maintain a healthy BMI, keep exercising and have balanced diet';
+    }
+    else if (25 <= bmi && bmi <= 29.9) 
+    {
+        result = 'You are Overweight! In order to maintain a healthy BMI, try eating less processed food and begin a healthy diet and exercise more';
+    }
+    else if (30 <= bmi && bmi <= 34.9) 
+    {
+        result = 'You are Obese! In order to maintain a healthy BMI, you should start having a balanced diet, avoid processed and junk food and execise more ';
+    }
+    else if (35 <= bmi) 
+    {
+        result = 'You are Extremely obese! This is extremely dangerous for your health, in order to maintain a healthy BMI, you should start having a balanced diet, avoid processed and junk food and execise more. Moverover seek support from a doctor';
+    }
+
+    let h1 = document.createElement("h1");
+    let h2 = document.createElement("h2");
+
+    let b = document.createTextNode(result);
+    let c = document.createTextNode('BMI: ');
+    let d = document.createTextNode(parseFloat(bmi.toString()).toFixed(2));
+
+    h1.appendChild(b);
+    h2.appendChild(c);
+    h2.appendChild(d);
+
+    document.getElementById('results').appendChild(h1);
+    document.getElementById('results').appendChild(h2);
+}