Loop Object literal using JavaScript

Here’s how to loop a JavaScript object literal and apply conditions to filter the object

<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
<title>Loop JavaScript Object by DevCurry.com</title>
    <script type="text/javascript">
        var jObj = [
                { "ID": "1", "Name": "Keith", "Age": "32" },
                { "ID": "2", "Name": "Bill", "Age": "36" },
                { "ID": "3", "Name": "Jack", "Age": "25" },
                { "ID": "4", "Name": "Mary", "Age": "39" },
                { "ID": "5", "Name": "Pallav", "Age": "29" }
            ];
       
        var cnt = jObj.length;

        for (var i = 0; i < cnt; i++) {
            if (jObj[i].Age >= 30)
                document.write(jObj[i].Name +
                ' ' + jObj[i].Age + '</br>');
        }

    </script>
</head>
<body>
</body>
</html>

As you can see, in the code shown above, we loop through the JavaScript object literal and print only those names whose age is >= 30. This will only print 3 out of 5 names and the output is as shown below:

image

6 comments:

  1. AnonymousNovember 17, 2010 at 7:53 AM

    Why there isn't any "DISLIKE" button?

    ReplyDelete
  2. TestNovember 17, 2010 at 8:44 AM

    This comment has been removed by the author.

    ReplyDelete
  3. TestNovember 17, 2010 at 8:45 AM

    You might consider updating the title to "Loop an Object Literal using JavaScript".

    JSON is a serialized form of JavaScript (think of XML that represents a .NET object). The Object Literal syntax looks very similar to JSON, but there are differences and conceptually they are different.

    You can check out Ben Alman's post for extensive details...

    http://benalman.com/news/2010/03/theres-no-such-thing-as-a-json/

    ReplyDelete
  4. Suprotim AgarwalNovember 17, 2010 at 12:56 PM

    Thanks Elijah. Point taken and the post was updated with the suggestions.

    ReplyDelete
  5. AnonymousNovember 17, 2010 at 8:41 PM

    Thanks very useful code snippet

    ReplyDelete
  6. asp.net ecommerce developmentNovember 17, 2010 at 10:07 PM

    Thanks for sharing this code. I would like to implement it practically. Hope it will run successfully.

    ReplyDelete