What does this code means.?

by

Let’s understand statement step by step

$("#table_data").find("tr:not(:first)").remove();

$("#table_data")

It finds the table with id (table_data)

$("#table_data").find()

this will find the elements on the basis of selector here as selector is "tr:not(:first)" so it will find all the tr except first one. Finally there is .remove() that will remove the selected rows.

So the complete statement will remove all the rows except first one

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