Substr-1

JavaScript Substr function is used to extract characters from string. Two parameters one is start index and 2nd is number of characters. var str = "I Love LearnKode."; var result = str.substr(1, 5); See the code snippet:

<!DOCTYPE html>
<html>
<head>
<title>Welcome to LearnKode - A code learning platform</title>
</head>
<body>
    <button onclick="extractSubpart()">Click to extract subpart of string</button>
    <p id ="sample"></p>
  <script>
  function extractSubpart()
  {
     var str = "I Love LearnKode.";
     var result = str.substr(1, 5);
     document.getElementById("sample").innerHTML=result;
  }
  </script>

</body>
</html>

Output