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POCallback on function call in $.each
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  1. POCallback on function call in $.each
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    copied!<p>I call a function in an $.each loop, but i want to make sure, that the next iteration is not called until the previous function is done.</p> <pre><code>$(".btn_loadfavorites").on("click",function(event){ $.getJSON('utility/get_user_compare_pages.php', {uid: user}, function(rsp) { $.each(rsp, function(i, favorite_pageid) { loadNewFacebookPage(favorite_pageid); }); }); }); </code></pre> <p>Here is the function (I stripped it of the unimportant stuff):</p> <pre><code>function loadNewFacebookPage(newfbpage){ if (isUrl(newfbpage) || newfbpage.substr(0,3) == "www"){ newfbpage = newfbpage.substr(newfbpage.lastIndexOf('/') + 1); } $.getJSON( "https://graph.facebook.com/"+newfbpage+"?fields=picture,name,category,likes,talking_about_count,link,website" ) .done(function( rsp ) { $('#loadmodal').modal('show'); var newpageid = rsp.id; $("*[data-pcpageid]").each(function(i, elm) { if(newpageid == $(this).data("pcpageid")){ pageexists = true; alert('Page has already been added'); return; } }); if(pageexists == false){ pagename = rsp.name.split(" "); pagepicture = rsp.picture.data.url; $('.grid_fbpages').append("&lt;li class='grid_li_fbpages' data-pcpageid='"+newpageid+"' style='max-width:20%;'&gt;&lt;img src='"+pagepicture+"' class='img-circle' style='display:inline;margin-right:15px;'&gt;&lt;h4 style='display:inline;'&gt;"+pagename[0]+"&lt;/h4&gt;&lt;a href='javascript:void(0)' class='btn_removefbpage' style='float:right' data-pcpageid='"+newpageid+"'&gt;&amp;#10005&lt;/a&gt; &lt;a href='javascript:void(0)' class='btn_addtofavorites' style='float:right' data-pcpageid='"+newpageid+"'&gt;&amp;#9733;&lt;/a&gt;&lt;hr&gt;Likes: "+rsp.likes+"&lt;br&gt;PTAT: "+rsp.talking_about_count+"&lt;br&gt;&lt;br&gt;&lt;/li&gt;"); //GET POSTS $.getJSON('utility/get_compare_posts.php', {access_token: access_token, pid: newpageid}, function(rsp) { $.each(rsp, function(postId, data) { //TOP POSTS if (data.hasOwnProperty('likes')){ top_posts_likes.push(data.likes.like_count); if (data.hasOwnProperty('comments')){ top_posts_comments.push(data.comments.comment_count); }else{ top_posts_comments.push('0'); } top_posts_message.push(data.message); top_posts_id.push(data.postId); } }); //TOP POSTS $(".grid_topposts").append("&lt;li data-pcpageid='"+newpageid+"' style='max-width:20%;text-align:left;'&gt;&lt;img src='"+pagepicture+"' class='img-circle' style='display:inline;margin-right:15px;'&gt;&lt;h4 style='display:inline;'&gt;"+pagename[0]+"&lt;/h4&gt;&lt;/li&gt;"); most_popular_post_index = top_posts_likes.indexOf(Math.max.apply(Math, top_posts_likes)); $.getJSON( "https://graph.facebook.com/"+top_posts_id[most_popular_post_index]+"?fields=picture&amp;access_token="+access_token+"", function(rsp) { $(".grid_topposts").append("&lt;li data-pcpageid='"+newpageid+"' style='max-width:20%;'&gt;&lt;img src='"+rsp.picture+"'&gt;&lt;br&gt;"+top_posts_message[most_popular_post_index]+"&lt;br&gt;Likes: "+top_posts_likes[most_popular_post_index]+" Comments: "+top_posts_comments[most_popular_post_index]+"&lt;/li&gt;"); top_posts_likes.splice(most_popular_post_index,1); top_posts_message.splice(most_popular_post_index,1); top_posts_id.splice(most_popular_post_index,1); top_posts_comments.splice(most_popular_post_index,1); most_popular_post_index = top_posts_likes.indexOf(Math.max.apply(Math, top_posts_likes)); $.getJSON( "https://graph.facebook.com/"+top_posts_id[most_popular_post_index]+"?fields=picture&amp;access_token="+access_token+"", function(rsp) { $(".grid_topposts").append("&lt;li data-pcpageid='"+newpageid+"' style='max-width:20%;'&gt;&lt;img src='"+rsp.picture+"'&gt;&lt;br&gt;"+top_posts_message[most_popular_post_index]+"&lt;br&gt;Likes: "+top_posts_likes[most_popular_post_index]+" Comments: "+top_posts_comments[most_popular_post_index]+"&lt;/li&gt;"); top_posts_likes.splice(most_popular_post_index,1); top_posts_message.splice(most_popular_post_index,1); top_posts_id.splice(most_popular_post_index,1); top_posts_comments.splice(most_popular_post_index,1); most_popular_post_index = top_posts_likes.indexOf(Math.max.apply(Math, top_posts_likes)); $.getJSON( "https://graph.facebook.com/"+top_posts_id[most_popular_post_index]+"?fields=picture&amp;access_token="+access_token+"", function(rsp) { $(".grid_topposts").append("&lt;li data-pcpageid='"+newpageid+"' style='max-width:20%;'&gt;&lt;img src='"+rsp.picture+"'&gt;&lt;br&gt;"+top_posts_message[most_popular_post_index]+"&lt;br&gt;Likes: "+top_posts_likes[most_popular_post_index]+" Comments: "+top_posts_comments[most_popular_post_index]+"&lt;/li&gt;"); top_posts_likes.splice(most_popular_post_index,1); top_posts_message.splice(most_popular_post_index,1); top_posts_id.splice(most_popular_post_index,1); top_posts_comments.splice(most_popular_post_index,1); }); }); }); //END TOP POSTS }); } }) .fail(function( error ) { alert('Did not find any match - Please try again with another name, ID or URL'); }); } </code></pre> <p>Thanks</p>
 

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