JSFiddle - React, Tailwind, and code Playground

HTML

<table id="table">
<tr id="tr1">
    <td>tr1</td>
</tr>
<tr id="tr2">
    <td>tr2</td>
</tr>
<tr id="tr3">
    <td>tr3</td>
</tr>
<tr id="tr4">
    <td>tr4</td>
</tr>
<tr id="tr5">
    <td>tr5</td>
</tr>
<tr id="tr6">
    <td>tr6</td>
</tr>
<tr id="tr7">
    <td>tr7</td>
</tr>
<tr id="tr8">
    <td>tr8</td>
</tr>
<tr id="tr9">
    <td>tr9</td>
</tr>
<tr id="tr10">
    <td>tr10</td>
</tr>
</table>

JavaScript

var numRows=5;
/* switch comments for same results */
$('tr').slice(numRows).remove();
//$('tr:gt(' + (numRows-1) + ')').remove()