I have a problem with create id or class on my table row. I use Firebase and read data to table in this way.
$("#table_body").append(
"<tr>"+
"<td>" + doc.data().id + "</td>"+
"<td>" + doc.data().nazwa + "</td>"+
"<td>" + doc.data().cena + "</td>"+
"<td>" + doc.data().ilosc + "</td>"+
"</tr>"
);
How can I add className or Id to "tr" ?
You should use template strings for this purpose here is your code with template strings
$("#table_body").append(
`<tr id=${myIdVariable}>
<td>${doc.data().id}</td>
<td>${doc.data().nazwa}</td>
<td>${doc.data().cena}</td>
<td>${doc.data().ilosc}</td>
</tr>`
);
with in a template string you can insert you variable in string like this
${variableName}
