JSFiddle - React, Tailwind, and code Playground

HTML

<TABLE>
    <TR>
        <TD>
            <INPUT TYPE='CHECKBOX' />
        </TD>
        <TD>
            <INPUT TYPE='TEXT' CLASS='MYTEXT' />
        </TD>
        <TD>SOMETHING</TD>
    </TR>
</TABLE>
<BUTTON ID="ADD">ADD
    <BUTTON ID="DEL">DELETE

JavaScript

$("#ADD").click(function () {
    $("table").append($("tr:last").clone(true));
    $("tr:last input").val("");
});

$("#DEL").click(function () {
    console.log($("table tr input:checked").length)
    if ($("table tr").length === 1 || $("table input:checked").length === $("table tr").length) {
        alert("cannot delete last tr")
    } else {
        $("table tr input:checked").parents('tr').remove();
    }
});