For_In-1

JavaScript for-in loop is used to iterate over the properties of an object. See the code snippet:

<!DOCTYPE html>
<html>
<head>
<title>Welcome to LearnKode - A code learning platform</title>
</head>  
 <body>
 <p id="sample"></p>

<script>
var txt = "";
var person = {fname:"Vishal", lname:"Garg", age:29}; 
var col;
for (col in person) {
    txt += person[col] + " ";
}
document.getElementById("sample").innerHTML = txt;
</script>
</body>
</html>

Output