jquery - ajax call in each loop functions as not expected -

-

i have function output array named displaycomments(comments). within function, make ajax call retrieve replies associated comments.

when ajax run retrieve replies, after array returned web api controller, code jumps out of ajax , go last line of each loop, $('#div_listofcomments').append(replies);. goes first line of loop, var cid = comment.commentid; , continue next comment item. then, ajax call happens second comment, , behaves same way. never visits success status of ajax call until each loop completed comments. then, moves success section , runs code once each reply item display them on form.

however, need attach replies under each comment, in other words, need append replies $('#div_listofcomments') after comment appended. however, code illustrated below not function in expected way. appends comments. appends replies. can see wrong code below ?

    function loadcommentsforpost(postid) {         jquery.support.cors = true;         $.ajax({             url: '/api/comment/getcommentsbypost?pid=' + postid,             type: 'get',             contenttype: "application/json; charset=utf-8;",             datatype: 'json',             success: function (response) {                               },             error: function (x, y, z) {                 alert(x + '\n' + y + '\n' + z);             },             complete: function (jqxhr, textstatus) {                 var comments = json.parse(jqxhr.responsetext);                 comments = comments["$values"];                 displaycomments(comments);             }         });     }      function displaycomments(comments) {          $('#div_listofcomments').html('');         $.each(comments, function (index, comment) {             //the current comment appended $('#div_listofcomments')              var cid = comment.commentid;             var replies;             $.ajax({                 url: '/api/reply/getrepliesbycomment?cid=' + cid,                 type: 'get',                 contenttype: "application/json; charset=utf-8;",                 datatype: 'json',                 success: function (response) {                     //vs break-point works before here                     //and see valid return value vs                     //the program continue work outside of ajax                     //with line below: $('#div_listofcomments').append.....                 },                 error: function (x, y, z) {                     alert(x + '\n' + y + '\n' + z);                 }             });              $('#div_listofcomments').append(replies);         });     }

john right. also, i'll suggest change use of cascated ajax calls. can use deferred/promise approach.

your code this

function loadcommentsforpost(){      jquery.support.cors = true;      return $.ajax({          url: '/api/comment/getcommentsbypost?pid=' + postid,          type: 'get',          contenttype: "application/json; charset=utf-8;",          datatype: 'json'      });  }  function loadcommentsforposterror(x, y, z) {      alert(x + '\n' + y + '\n' + z);  }  function retrievedcomments(jqxhr, textstatus)  {      var comments = json.parse(jqxhr.responsetext);      comments = comments["$values"];      displaycomments(comments);  }  function displaycomments(comments) {      $('#div_listofcomments').html('');      $.each(comments, function (index, comment) {          var cid = comment.commentid;            // append comment $('#div_listofcomments').          // append empty div $('#div_listofcomments') hold replies,          // giving id based on cid.            $.ajax({              url: '/api/reply/getrepliesbycomment?cid=' + cid,              type: 'get',              contenttype: "application/json; charset=utf-8;",              datatype: 'json',              success: function (response) {              // put replies in div id based on cid.              // cid have correct value because closure.              }          });      });  }    $.when(loadcommentsforpost()).then(retrievedcomments, loadcommentsforposterror);

more @ $.when documentation


Comments

Post a Comment

Popular posts from this blog

java - Could not locate OpenAL library -

-
i writing game using slick2d library, uses lwjgl. lwjgl version 2.9.3. using netbeans 8. i tried adding sounds game, example music track on main menu. problem is, exception when run game, despite game still compiling , running except sound of course: sat mar 21 01:23:57 edt 2015 error:could not locate openal library. org.lwjgl.lwjglexception: not locate openal library. @ org.lwjgl.openal.al.create(al.java:156) @ org.lwjgl.openal.al.create(al.java:156) @ org.lwjgl.openal.al.create(al.java:102) @ org.lwjgl.openal.al.create(al.java:206) @ org.newdawn.slick.openal.soundstore$1.run(soundstore.java:295) @ java.security.accesscontroller.doprivileged(native method) @ org.newdawn.slick.openal.soundstore.init(soundstore.java:292) @ org.newdawn.slick.music.<init>(music.java:156) @ org.newdawn.slick.music.<init>(music.java:75) @ view.mainmenu.init(mainmenu.java:58) i didn't include rest of error states error happens in game code. the...
Read more

c++ - Delete matches in OpenCV (Keypoints and descriptors) -

-
i want check scene image against 2 train images. that, detect features , compute descriptors of both training images. before detecting, computing , matching scene image, delete matches of train1 , train2. because these matches won't facilitate matching of scene image train1 , train2. so, match train1 train2 , vector of matches trainidx , queryidx. how can delete these matches in keypoints-vector , descriptor matrix of train1 , train2? best regards, dwi i have done below: std::vector<cv::keypoint> keypoints[2]; cv::mat descriptor[2]; std::vector< cv::dmatch > matches; /* write code generate keypoints, descriptors , matches here... keypoint[0] -> train image 1 keypoints keypoint[1] -> train image 2 keypoints descriptor[0] -> train image 1 descriptors descriptor[1] -> train image 2 descriptors matches -> matched between train image 1 , 2 */ // logic keep unmatched keypoints , corresponding descriptor...
Read more

sorting - opencl Bitonic sort with 64 bits keys -

-
i used nvidia sdk bitonic sort , works great me. 32 bits (uint) need ulong keys. have typically 2^14 keys @ time , power of 2. searched on not find kernel designed ulong. i tried modified nvidia sdk bitonic sort using ulong keys not work. kernel not crash after de call clenqueuendrangekernel got error : cl_invalid_command_queue can tell me how modify bitonic sort or radixsort, or can sort ulong keys? i running nvidia quadro 4000 opencl 1.1 cuda 6.5.20 full_profile used original nvidia sdk bitonicsort.cl i used"ulong" keys , value input , ouput instead of "uint" thanks helping i made work-around suit need. used 30 bits of key , 18 high bits of value sorting. changed comparators (2 lines): '#define mask 0xffffc000 // suit need from this: if( (*keya > *keyb) == dir ) this: if(((*keya > *keyb)||((*keya == *keyb)&&((*vala & mask)> (*valb & mask)))) == dir ) it works fine. but, still, it's work-a...
Read more