Table header to stay fixed at the top when user scrolls it out of view with jQuery

Question

I am trying to design an HTML table where the header will stay at the top of the page when AND ONLY when the user scrolls it out of view. For example, the table may be 500

Answer 1

function fix_table_header_position(){
 var width_list = [];
 $("th").each(function(){
    width_list.push($(this).width());
 });
 $("tr:first").css("position", "absolute");
 $("tr:first").css("z-index", "1000");
 $("th, td").each(function(index){
    $(this).width(width_list[index]);
 });

 $("tr:first").after("");}

This is my solution