Javascript Data Type How to - Retrieve property value from array literal








Question

We would like to know how to retrieve property value from array literal.

Answer


<!DOCTYPE html>
<html>
<head>
<script type='text/javascript'>
<!--  w ww  .  ja va  2s  . c  om-->
var obj = [
    { "pa":"va1", "pb":"vb1" },
    { "pa":"va2", "pb":"vb2" },
    { "pa":"va3", "pb":"vb3" },
    { "pa":"va4", "pb":"vb4" }
];
var myString = "va4";
var filtered = obj.filter(function(element) { 
    return element.pa === myString;
});
if (filtered.length > 0) {
   document.writeln(myString + " found");
}

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

The code above is rendered as follows: