I have a SharePoint public site branded and it was working fine when out of the sudden the slider with images stopped appearing and I get this error :

Unable to get property 'split' of undefined or null reference

Error Message

I have searched to find where this split function is referenced and I located it in the slider.txt file I have for the pages :

<script src="/../style library/mystyles/JS/jquery-1.8.3.min.js" type="text/javascript"></script>
<script src="/../style library/mystyles/JS/jquery.SPServices-0.7.2.js" type="text/javascript"></script>
<script src="/../style library/mystyles/JS/slides.jquery.js" type="text/javascript"></script>
<link rel="stylesheet" href="/../style library/mystyles/css/global.css">
      var j =jQuery.noConflict();
    j(document).ready(function () {
            operation: "GetListItems",
            async: false,
            listName: "Pictures",
            CAMLRowLimit: 6,
            completefunc: function (xData, Status) {
                var hasRows = false;
               j(xData.responseXML).find("z\\:row, row").each(function () {
                    hasRows = true;
                    var _url = '/' + j(this).attr("ows_RequiredField")
                    var _title = j(this).attr("ows_Description");
                     ***var blog = ($(this).attr("ows_blog")).split(",")[0];***

                    _slideDiv = j("<div class='slide'/>");
                    _link = j("<a href='"+ blog +"'  src='" + _url + "'/>");
                    _Image =j("<img  id='slideShowImage' src='" + _url + "'/>");

                    _Title = j("<div class='caption1'><p>" + _title + "</p></div>");


    j(function () {
            preload: true,
            preloadImage: '/../style library/mystyles/images/loading.gif',
            play: 5000,
            pause: 2500,
            hoverPause: false,
            animationStart: function (current) {
                    bottom: -35
                }, 100);
                if (window.console && console.log) {
                    // example return of current slide number
                    console.log('animationStart on slide: ', current);
            animationComplete: function (current) {
                    bottom: 0
                }, 200);
                if (window.console && console.log) {
                    // example return of current slide number
                    console.log('animationComplete on slide: ', current);
            slidesLoaded: function () {                      
                    bottom: 0
                }, 200);

<div id="container">
    <div id="example">
        <div id="slides">
            <div class="slides_container" id="slides_container_div">

         <a class="prev" href="#" ><img src="/../style library/mystyles/images/left-arrow.png"/></a>
                      <a class="next" href="#"><img src="/../style library/mystyles/images/right-arrow.png"/></a>

Can anyone please help me out to fix this? I haven't changed anything for a long time and this appeared recently.

Thanks a lot for your help!

  • 1
    Try this in the console console.log(j(this).attr("ows_blog")); Apr 19, 2016 at 7:59
  • I have tried it and I get undefined . This means that It can't find the value ows_blog ? Why does this happen all of a sudden? Apr 19, 2016 at 11:34
  • It seems ows_blog is not the proper field internal name. Double check that. Apr 20, 2016 at 9:15

2 Answers 2


It looks the your blog field is a URL field. A SharePoint URL field is built with 2 piece of information, the URL and the description. The first part is the URL. If your column is not a required field, then probably there's some data with no value hence you're getting the error "Unable to get property 'split' of undefined or null reference".

You should re-write the part with proper data validation. Ex.

var blog = $(this).attr("ows_blog");
blog = blog ? blog.split(",")[0] : '#';

Hope it helps.

  • As per OP $(this).attr("ows_blog") itself is returning null Apr 20, 2016 at 9:14
  • It will return null if the value is null or the field doesn't exist. Thus a validation will help.
    – Aveenav
    Apr 20, 2016 at 17:16
  • Thanks a lot for your help. With your validation suggested the slider worked and show undefined field on an image. I filled the value needed and it worked without producing any errors. Again thanks a lot for your help! Apr 21, 2016 at 5:53
  • glad it helped. You can do similar validation for other fields too.
    – Aveenav
    Apr 21, 2016 at 14:14

Solution 1:

If ows_blog is having a null value



causes: Unable to get property 'split' of undefined or null reference

Please check the value of ($(this).attr("ows_blog")) first.

Solution 2:

The quotes may be single instead of double or the tag uppercase.

Note : Look in the console for what Chrome actually uses

  • Yes the console.log(j(this).attr("ows_blog")); returns undefined value. I will try the single quotes but I have a feeling it won't work. Something has changed for some reason , but I haven't changed anything for months Apr 19, 2016 at 11:35

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