Uncaught TypeError: Cannot call method 'toLowerCase' of undefined

Question

I ran into a very vague error while doing some simple jQuery DOM manipulation.

The line that triggered the error is the following:

$(this).closest(\'tr\')

Answer 1

// assign this to a variable

var val = this;

// Use

$(val).closest('tr').remove(); // It worked for me

Instead of :

$(this).closest('tr').remove();