Typeerror: document.getelementbyid(...) is null datatable

Question

1.00/5 (1 vote)

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i have datatable

i need to make for loop
but i have hidden column and i need to get value and set a new value

JavaScript

var rows = $("#containerprosCC").dataTable().fnGetNodes();

for(var i=1;i<rows.length;i++) {

alert(document.getElementById('Uint'+i).value);

}

Error

TypeError: document.getElementById(...) is null

What I have tried:

i have datatable

i need to make for loop
but i have hidden column and i need to get value and set a new value

JavaScript

var rows = $("#containerprosCC").dataTable().fnGetNodes();

for(var i=1;i<rows.length;i++) {

alert(document.getElementById('Uint'+i).value);

}

Error

TypeError: document.getElementById(...) is null

Posted 22-Mar-20 16:56pm

Mostafa Salama S

Updated 23-Mar-20 7:32am

PIEBALDconsult

v2

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Richard Deeming · Answer 1 · 2020-03-23T07:33:00

The error message is clear - your document doesn't contain an element with the ID 'Uint' + i for every row in your table.

When you pass in an ID which doesn't exist in the current document, getElementById returns null. Attempting to access a property of the returned value will throw the error that you're seeing.

You need to debug your code to find out why the elements don't exist when you think they should.