I am working on an enterprise wiki site collection inside sharepoint server 2013. and inside the Home page i added the following code snippet, to dynamically build a summary table using javascript/api calls:-

<style unselectable="on">
.table tbody tr:hover {

.table th, .table td {

.table tbody tr td, .table tbody tr th {
<div style="padding: 5px 10px; border: 1px solid grey; width: 100%; margin-left: 20%;" unselectable="on">
<div style="text-align: left; font-size: 18px;" unselectable="on"><b unselectable="on">Plan Summary</b></div>
<div id="inserthere" style="margin-left: 50%;" unselectable="on"></div>

then inside my enterprise wiki page layout i added reference to the javaScript file which is going to build the table (ofcourse i do not want to render the script on edit mode that why i wrap it with <PublishingWebControls:EditModePanel PageDisplayMode="Display" runat="server"> ):-

  <PublishingWebControls:EditModePanel PageDisplayMode="Display" runat="server">
  <script src="/kb/Business/Resources/customSummary.js" type="text/javascript"></script>

finally here is the customSummary.js script:-

$(document).ready(function() {
function appendinit(){
var htmlinit = "";
htmlinit = "<image  id= 'customloader' src= '/resources/ajax-loader.gif'></image>";
return "done";
function getCurrentMainCategoryID(){
var results = "";
var html="";
html="<table class='table' style='border-collapse:collapse'><thead><tr><th style='text-align:left'></th><th style='text-align:right'>Pages</th></tr></thead><tbody>";
    var url = "/kb/Business/_api/web/lists/getbytitle('MainCategory')/items?$select=Title&$orderby=MainCategoryOrder asc";

     url: url,
     method: "GET",
     async: false,
     headers: { "Accept": "application/json; odata=verbose" },
     success: function (data) {

            results = data.d.results;
            for(var j2=0;j2<results.length;j2++)

            var currentMainCatTitle = results[j2].Title;

     url: "/kb/Business/_api/web/lists/getbytitle('pages')/items??$select=Title,MainCategory&$filter=MainCategory eq " + "'" + currentMainCatTitle +"'" ,
     method: "GET",
     async: false,
     headers: { "Accept": "application/json; odata=verbose" },
     success: function (data) {
            + "</td>"
            + "<td style='text-align:right'>"+data.d.results.length+"</td></tr>";


     error: function (data) {   



     error: function (data) {


    return results;

var test = appendinit();

now my initial plan was:-

  1. Click on the Home page >> then the the loading image will be shown.
  2. need to wait for a couple of seconds.
  3. do the api calls.
  4. hide the loading image.
  5. build the dynamic table.

but now i am getting this behavioure (i added the alerts to try to understand the execution sequence):-

  1. I will get alert (First)
  2. I will get alert (Second)
  3. I will get alert (Third)
  4. wait for a couple of seconds...
  5. then after that the loading image will appear for milliseconds then get hide at the same time the table being rendered..

so not sure why i am getting this behavioure ? i mean the loading image should first get rendered,, after that i have to wait for the table to get dynamically drawn ...

1 Answer 1


(probably) the use of async:false messes up the DOM redraw event queue.

Question: Why are you using an a sync call??

So programmers whack in


to force a DOM update at the right time

Long answer: read the second answer!



You created an empty DIV for your content:

<div id="inserthere" style="margin-left: 50%;" unselectable="on"></div>

What would happen if you delete all the loader related script and put your loading image in there?

  • but i am not using async calls ?? i am using sync calls since inside the 2 ajax calls i am specifying async:false.. also if i remove this async:false then even the html table will not be shown
    – John John
    Mar 5, 2017 at 0:08
  • One typo..yes you are using sync calls (by setting async:false) You have to apply Promises to write the HTML after all async operations are done: htmlgoodies.com/beyond/javascript/… Mar 5, 2017 at 8:18

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