Passing data with jquery ajax to php file

Your structure is wrong for sending the ajax data. I've gone to your link and copied the function from that tutorial, and updated with the view variable being passed into the ajax data properties.

You will pass view in as the second parameter, and loadData will default that to 1 if nothing is passed in.

function loadData(page, view) {

    view = view || 1; // view defaults to 1 if not passed in
    loading_show(); 
    $.ajax({
        type: "POST",
        url: "load_data.php",
        data: {
            page: page,
            view: view
        },
        success: function(msg) {
            $("#container").ajaxComplete(function(event, request, settings){
                loading_hide();
                $("#container").html(msg);
            });
        }
    });

}

So then your view button code looks like this:

$('#btn_view').live('click', function(){
    var view = 2;
    var page = 1;
    loadData(page, view);
});  

I'm not sure what you're doing to determine what page is, but I'm guessing from it being hardcoded into that function as 1 that you'll probably need to copy this code into a function:

function establishPageAndLoadData(view) {
    view = view || null; // use view if passed in...
    var pagea = parseInt($('.goto').val());
    var no_of_pages = parseInt($('.total').attr('a'));
    if(pagea != 0 && pagea <= no_of_pages){
        loadData(pagea, view); // pass view to load function
    } else {
        alert('Enter a PAGE between 1 and '+no_of_pages);
        $('.goto').val("").focus();
        return false;
    }
}

$('#go_btn').live('click',function(){
    establishPageAndLoadData(); // does page under the hood
});

So now you've centralized your code selecting the page variable, you can use it again in your view button. I've added in an optional view variable into that function to to use here:

$('#btn_view').live('click', function(){
    var view = 2;
    establishPageAndLoadData(view); // calculates page under the hood
}); 

I might be barking up the wrong tree here, but here your controller will always get passed two post variables: page and view