{"id":1592,"date":"2016-08-17T09:00:32","date_gmt":"2016-08-17T09:00:32","guid":{"rendered":"http:\/\/javascript-tutor.net\/?p=1592"},"modified":"2017-09-21T13:34:23","modified_gmt":"2017-09-21T13:34:23","slug":"bmi-calculator","status":"publish","type":"post","link":"https:\/\/javascript-tutor.net\/index.php\/2016\/08\/17\/bmi-calculator\/","title":{"rendered":"BMI Calculator"},"content":{"rendered":"

You can create a BMI calculator using JavaScript. The formula for BMI(Body Mass Index) is as follows:<\/p>\n

BMI=weight\/(height)^2<\/strong><\/p>\n

where weight is in kg and height in cm.<\/p>\n

In the\u00a0html page, you can create three text box using the <input> tag to accept the user inputs for name, height and weight.<\/p>\n

In the JavaScript, you can create a function to calculate the bmi, as follows:<\/p>\n

function bmi(){<\/p>\n

var sheight=parseFloat(document.getElementById(‘hgt’).value);
\nvar sweight=parseFloat(document.getElementById(‘wgt’).value);
\nvar bmi=sweight\/Math.pow(sheight,2);
\nvar student_bmi=document.getElementById(‘bmi_index’);
\nstudent_bmi.textContent=bmi.toFixed(2);
\n}<\/p>\n