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<html>
<head>
<link href='https://fonts.googleapis.com/css?family=VT323' rel='stylesheet'>
</head>
<body>
<H1>BMI CALCULATOR</H1>
<div id="scale_main">
<div id="scale_display">
<h2 id="range" class="neutral">Enter Measurements</h2>
<h3 id="bmi" >--.--</h3>
<div id="needle">
</div>
<div id="needle_bottom">
</div>
</div>
<div class="measurement" id="height">
<h4>Height</h4>
<input class="input" type="text" id="height_input" name="height" required></input>
<span class="unit">Inches</span>
</div>
<div class="measurement" id="weight">
<h4>Weight</h4>
<input class="input" type="text" id="weight_input" name="weight" required></input>
<span class="unit">Pounds</span>
</div>
<div>
<button id="calculate" onclick="calculate(document.getElementById('height_input').value, document.getElementById('weight_input').value)">CALCULATE</button>
<button id="clear" onclick="clear_calculator()">CLEAR</button>
</div>
</div>
</body>
</html>
body{
background-color: #B1FAFF;
}
h1{
text-align: center;
font-family: sans-serif;
color: #0182D8;
font-size: 36px;
margin-top: 80px;
}
h2{
text-align: center;
margin-bottom: 5px;
font-family: sans-serif;
font-size: 20px;
}
h3{
text-align: center;
margin-top: 0px;
font-family: "VT323";
font-size: 32px;
color: #FFFFFF;
margin-bottom: 5px;
}
h4{
font-family: sans-serif;
margin-bottom: 5px;
margin-top: 85px;
font-size: 20px;
color: #0182D8;
}
#scale_main{
background-color: #FFFFFF;
width: 600px;
min-height: 650px;
margin: 0 auto;
margin-top: 20px;
border-radius: 20px;
box-shadow: -1px 3px 15px #888888;
}
#scale_display{
background-color: #DEE0E5;
width: 60%;
height: 140px;
margin-left: 20%;
margin-top: 50px;
border-radius: 100px 100px 0 0;
float: left;
box-shadow: 0px -1px 2px #888888;
}
#needle{
background-color: #E22A2A;
width: 3px;
height: 47px;
margin-left: 50%;
box-shadow: 0px 3px 15px #888888;
}
#needle_bottom{
background-color: #E22A2A;
width: 20px;
height: 12px;
margin-left: 47.5%;
border-radius: 100px 100px 0px 0px;
box-shadow: 0px -1px 7px #888888;
}
.measurement{
width: 40%;
float: left;
margin-left: 10%;
}
.input{
width: 45%;
font-size: 24px;
vertical-align: bottom;
border-color: #DEE0E5;
border-style: solid;
font-family: sans-serif;
}
.unit{
font-family: sans-serif;
font-weight: 700;
font-size: 20px;
}
#calculate{
margin-left: 35%;
margin-top: 100px;
padding: 4px 40px;
border-radius: 7px;
font-size: 20px;
box-shadow: 0px 0px;
border-style: none;
color: #FFFFFF;
background-color: #16BE5F;
}
#calculate:hover{
cursor: pointer;
}
#clear{
margin-left: 35%;
margin-top: 15px;
padding: 4px 65px;
border-radius: 7px;
font-size: 20px;
box-shadow: 0px 0px;
border-style: none;
color: #FFFFFF;
background-color: #E22A2A;
}
#clear:hover{
cursor: pointer;
}
.neutral{
color: #000000;
}
.good{
color: #16BE5F;
}
.bad{
color: #E22A2A;
}
function calculate(height, weight) {
weight = parseInt(weight);
height = parseInt(height);
console.log("Height", height);
console.log("Weight", weight);
weight = weight * 703;
height = height*height;
var bmi = weight/height;
console.log("BMI: ", bmi);
document.getElementById('bmi').innerHTML = bmi.toPrecision(3);
if(bmi < 18.5)
{
document.getElementById('range').innerHTML = "Underweight";
document.getElementById('range').classList.remove("neutral");
document.getElementById('range').classList.remove("good"); document.getElementById('range').classList.add("bad");
}
if(bmi >= 18.5 && bmi < 25)
{
document.getElementById('range').innerHTML = "Normal";
document.getElementById('range').classList.remove("neutral");
document.getElementById('range').classList.remove("bad"); document.getElementById('range').classList.add("good");
}
if(bmi >= 25 && bmi < 30)
{
document.getElementById('range').innerHTML = "Overweight";
document.getElementById('range').classList.remove("neutral");
document.getElementById('range').classList.remove("good"); document.getElementById('range').classList.add("bad");
}
if(bmi > 30)
{
document.getElementById('range').innerHTML = "Obese";
document.getElementById('range').classList.remove("neutral");
document.getElementById('range').classList.remove("good"); document.getElementById('range').classList.add("bad");
}
};
function clear_calculator(){
console.log("Clear");
document.getElementById('range').classList.remove("bad");
document.getElementById('range').classList.remove("good");
document.getElementById('range').classList.add("neutral");
document.getElementById('range').innerHTML = "Enter Measurements";
document.getElementById('bmi').innerHTML = "--.--";
document.getElementById('height_input').value="";
document.getElementById('weight_input').value="";
document.getElementById('height_input').focus();
};
Also see: Tab Triggers