How to create a length converter with HTML and JavaScript?

Javascript Web Development Object Oriented Programming

To create a length converter with HTML and JavaScript, the code is as follows −

Example

<!DOCTYPE html>
<html>
<head>
<style>
   body{
      font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
   }
   input,span{
      font-size: 20px;
   }
</style>
</head>
<body>
<h1>Length Converter</h1>
<h2>Type length in Kilometers to convert it into meters</h2>
<p>
<label>Kilometers</label>
<input id="inputKm" type="number" placeholder="Kilometers"
oninput="KmtoMConverter(this.value)" onchange="KmtoMConverter(this.value)">
</p>
<p>Meters: <span class="meters"></span></p>
<script>
   function KmtoMConverter(length) {
      document.querySelector(".meters").innerHTML=length*1000;
   }
</script>
</body>
</html>