Uncaught typeerror: cannot read property 'childnodes' of null

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JavaScript

success: function (data) {
                debugger;
                $.each(data, function (i) {
                   $('#LiveDataTable').append('<tr><td>' + data[i].VehicleName + '</td>' +
                   $('#LiveDataTable th:gt(0)').each(function () {
                       debugger;
                       var id = $(this).attr("id");
                       var vehName = data[i].VehicleName;
                      ' <td>&nbsp;MN</td>'
                   })+'</tr>');
                });
            }

What I have tried:

Uncaught TypeError: Cannot read property 'childNodes' of null

Posted 26-Mar-16 2:13am

Member 9937140

Updated 26-Mar-16 19:52pm

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Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ) 26-Mar-16 13:07pm

Which line?

ZurdoDev 26-Mar-16 21:04pm

That means something is null. Debug it and figure out why. We can't run the code for you.

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Patrice T · Accepted Answer · 2016-03-26T19:51:00

You should learn to use the debugger as soon as possible. Rather than guessing what your code is doing, It is time to see your code executing and ensuring that it does what you expect.

The debugger allow you to follow the execution line by line, inspect variables and you will see that there is a point where it stop doing what you expect.
Mastering Debugging in Visual Studio 2010 - A Beginner's Guide[^]
http://docs.oracle.com/javase/7/docs/technotes/tools/windows/jdb.html[^]
https://www.jetbrains.com/idea/help/debugging-your-first-java-application.html[^]

Quote:
Uncaught typeerror: cannot read property 'childnodes' of null

For some reasons, a variable that you expect to be an object have failed to initialize and is set to Null instead. Thud the error when you try to access.
The problem is that you fail to check that the object is Ok after creation.