Question

Say I have a variable which holds a table row.

How would I get the row right before it using javascript/jquery?

Answer 1

This:

var prevRow = row.previousElementSibling;

or

var prevRow = $( row ).prev()[0];

([0] is used to “unwrap the jQuery object”, to get the DOM reference to that row. If you want to perform jQuery methods on that row, you can just leave it inside, like $( row ).prev().addClass( '...' ); and in that case you don’t need a new variable.)