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PONeed some tips in jquery / json for arrays in photo viewer
 

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  1. PONeed some tips in jquery / json for arrays in photo viewer
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    <p>I'm making a photo viewer from scratch and it is working fine, except a few things.</p> <p>The code goes like this:</p> <p>First I have the ID of the current album, and print all the images belonging to the photo. Then, when user click on the photo, this happened:</p> <pre><code> var loaded = []; var albums = []; var album_id = ALBUM ID var cur_pic = 0; var alb_name = ''; $('.photo').click(function(){ var cover_photo = $(this).attr('id').replace("911",""); albums[album_id] = []; $('#photo_preview .pleft').html('&lt;img src="'+cover_photo+'"/&gt;'); $('#photo_preview').show(); $.ajax({ type: 'POST', url: "photo_ajax.php", dataType:'json', data: 'action=get_info' + $('#aid').val().replace("aid",""), success: function(data){ loaded[album_id] = true; albums[album_id] = data; $('#photo_preview .pleft').html('&lt;img src="'+albums[album_id][0]['ImagePath']+'"/&gt;'); // The first photo you click on, will be the first photo to see :) $('#photo_preview').show(); } }) // } }); // Loading images and make them visible in the popup... function loadNextImage(album_id, step){ function loadNextImage(album_id, step){ var next_pic = 0; if(step == 0){ next_pic = 0; }else if(step == 'next'){ next_pic = parseInt(cur_pic, 10)+1; cur_pic = next_pic; if(next_pic &gt;= albums[album_id].length){ next_pic = 0; } }else{ next_pic = parseInt(cur_pic, 10)-1; if(next_pic &lt; 0){ next_pic = albums[album_id].length - 1; } } cur_pic = next_pic; $('#photo_preview .pleft').html('&lt;img src="'+albums[album_id][next_pic]['ImagePath']+'"/&gt;'); } // Loading the next image in the JSON array...: $(".preview_next").click(function(){ loadNextImage(album_id, 'next'); }); // Loading the previous image in the JSON array...: $(".preview_prev").click(function(){ loadNextImage(album_id, 'prev'); }); </code></pre> <p>In photo_ajax.php:</p> <pre><code> $i = 0; $album = array(); foreach( $aImageInfo as $row ){ $album[$i] = array(); $album[$i]['ImageID'] = $row['ImageID']; $album[$i]['ImagePath'] = $row['ImagePath']; $album[$i]['ImageDate'] = $row['ImageDate']; $album[$i]['ImageDescription'] = $row['ImageDescription']; $i++; } echo json_encode($album); </code></pre> <p>This is working, but my questions are now this:</p> <ol> <li><p>var cur_pic = 0; is set to 0, mean it will start to show the first photo in the json array. I need it fixed so I can find witch number in the array the photo I just clicked on is, so it can start to view and count from that spot.</p></li> <li><p>This is now only working inside a album. Say I have a single photo visible on another page. How to fix this so - when I click on it - the photo is visible and I can get the whole json array, and browse through all images belonging to the same album as the photo I have clicked on.</p></li> </ol> <p>Straight example. Say Facebook or Twitter. You have a photo on the wall. Click on it, and you can navigate whole album.</p> <p>How to solve?</p>
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    1. COI figure out how to find the number of the current value in the array, so now I need to find a solution to question number 2. I used a for loop running through the array, and returned the value when it matched the ID on the image.
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