Question

$.getJSON('dat.js', function(i,data) {
             $( "#lessons" ).tmpl( data[1].title ).appendTo( "#result" );
            });

my json file

{

            "posts": [
                    {
                    "title": "ajax | Programming ",
                    "url": "hello"
                    },
                    {
                    "title": "jQuery and Ajax Demos Pard - 3",
                    "url": "how are you"
                    },
                    ]
}

i want to access the name field but data[0] is showing error as undefined,

Answer 1

Your JSON seems invalid. Keys must be wrapped in quotes, so each object looks like

{"Name" : "Foo", "ReleaseYear" : "Bar"}

Use JSONLint.com to validate JSON strings.

Live Demo

$(document).ready(function(){
var test = '[{ "Name": "The Red Violin", "ReleaseYear": "1998" },{ "Name": "Eyes Wide Shut", "ReleaseYear": "1999" },{ "Name": "The Inheritance", "ReleaseYear": "1976" }]';

var obj = JSON.parse(test);
console.log(obj[0].Name);

});​