More PHP/jquery projects

great video

Brilliant...thanks Hampton Paulk, something to get me started!

My pleasure. Let me know if you need more info Matthew Campbell.

Is intval() the same as typecasting a variable with (int)?

Also, I think the 'edit' function in the forums is buggy. I couldn't edit my original comment.

Also, don't you need an anonymous function (or at least a function) to be passed into jQuery's POST function as a second parameter?

I had a bit of a read and I think they are essentially the same. intval() allows for conversions to/from different bases (base 16 to base 10) etc.. and (int) casting does not. But they both essentially convert to an integer.

While looking into it, I did notice that (int) casting is purported to cost less in CPU than intval(). I can't vouch for that myself, but another consideration might be readability. There is a certain advantage to having what you want to convert clearly placed as an argument of a function. (int) could look a little disconnected at a glance.

PHP sometimes seems a little messy this way to my eyes. It seems to have evolved organically rather than planned in a regimented fashion. It's just an impression I get while learning it. I'm possibly not being fair.

I have a problem. I'm trying to grab user posts from a database and I did get it so that I could echo out individual post parameters but trying to do the following doesn't work. I also tried bringing up an alert with the selected element's inner html and it worked so I know I'm selecting it right I just don't know why the HTML in the append method isn't added to the page when I run this:

var jqhxr = $.post('scripts/show_more_posts.php', serializedData)

    //success
    .done(function (response){
      var obj = $.parseJSON(response);

      if (obj.post !== null) {
        $(".post_item:last-of-type").append("<li>"+obj.post['entry_path']+"</li>");
      }
    })

    //always
    .always(function(){
      $input.prop("disabled", false);
    });```

I also tried replacing the code within the condition with this and it worked, but I can't get the first one to work:
```javascript
console.log(obj.post['entry_path']);

I'm trying to use the information retrieved from my database to write another list item element after the one selected in the following code but it won't write the HTML when i run it. It shows the right information when I display the inner HTML of the selected element when I do this - console.log(obj.post['entry_path']); - so I"m not sure why this isn't working.

var jqhxr = $.post('scripts/show_more_posts.php', serializedData)

    //success
    .done(function (response){
      var obj = $.parseJSON(response);

      if (obj.post !== null) {
        //console.log(obj.post);
        //console.log(obj.post['entry_path']);
        $(".post_item:last-of-type").append("<li>"+obj.post['entry_path']+"</li>");
        //$(".posts li[id]:last-of-type").attr('class');
      }
    })

    //always
    .always(function(){
      $input.prop("disabled", false);
    });

Also i don't think the "edit" button on these posts works because when I clicked edit on my last post it deleted in instead and reposted a different one

I agree with you. Would love to see this.

+1

+1

+1

+1... nice video. Maybe not enough for a whole deep dive as stated, but there seems to me like there is room for expansion. I have tinkered with AJAX and got it working for my purpose. I didn't use JSON though, I'd like to learn more about that... especially how to return multiple rows of data to JS from a PHP MySQL lookup. Maybe I just need to learn more about JS and Jquery in general. Keep up the good work, I love learning this stuff.

I was thinking the same thing. It would be good to have a track for rich client web applications involving one or more MV* frameworks. It paves the way for cross-platform mobile app development too which would also be very relevant.

Where as AJAX is really a concept we are using HTML5 and jQuery Ajax Post to make it happen. So as long as your browser can handle those, then you should be good to go Jose Labias