how to get json data in jquery

This below methods are used to convert json data to j query objects

Assuming your server side script doesn't set the proper Content-Type: application/json response header you will need to indicate to jQuery that this is JSON by using the dataType: 'json'parameter

$.ajax({ 
    type: 'GET', 
    url: 'http://example/functions.aspx', 
    data: { get_param: 'value' }, 
    dataType: 'json',
    success: function (data) { 
        $.each(data, function(index, element) {
            $('body').append($('<div>', {
                text: element.name
            }));
        });
    }
});

or use the $.getJSON method:
$.ajax({ 
                type: 'GET', 
                url: 'http://example/functions.php', 
                data: { get_param: 'value' }, 
                dataType:'json',
                success: function (data) { 
                                    var names = data
                    $('#cand').html(data);
                }
            });

$.getJSON( "ajax/test.json", function( data ) {



  var items = [];



  $.each( data, function( key, val ) {



    items.push( "<li id='" + key + "'>" + val + "</li>" );



  });



 



  $( "<ul/>", {



    "class": "my-new-list",



    html: items.join( "" )



  }).appendTo( "body" );



});