Occasionally, Knockout associates an element with [object HTMLDivElement] through binding


My UI application is utilizing requireJs and knockout js.
In the main html file (index.html), there is a div element as follows:

<html style="height:100%" lang="en">
  <head>
     <title>Main</title>
     <script data-main="myMain" src="/path/js/libs/require/require.js" type="text/javascript"></script>
  </head>
  <body  style="background-color:#EDEDED">
        <div class="someClass" id="loading" data-bind="text:loading"></div>
  </body>
</html>

The binding to a "Loading" text is done in myMain.js file with the following code:

ko.applyBindings({loading: getTranslatedStringFromLib('LOADING')}, $('#loading')[0]);

Although it usually works well, sometimes knockout inserts [object HTMLDivElement], resulting in the generated code appearing like this:

<div data-bind="text:loading" class="someClass" id="loading">[object HTMLDivElement]</div>

Has anyone encountered a similar issue before? Any insights on what might be causing this behavior?

Answer №1

The reason behind this issue is most likely due to the presence of an element with the id loading. When, for some unknown reason, the view-model is not accessible or is being changed, it interprets the loading token as window.loading, which in turn points to your #loading element based on browser specifications.

Check out this Fiddle for further clarification.

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