What does this line of code mean?

Question

JavaScript

Confused by __regex and axios.get(`${API_URL}?sort=-createdAt${search}`)
Are regular expressions that weird?
https://learn.javascript.ru/regular-expressions-ja... reading about reg. expressions did not help to understand what was happening. I understand that they are passing a variable to the server in order to write it to the database

export const search = () => {
  return (dispatch, getState) => {
    const description2 = getState().todo.description2;
    const search = (description2) ? `&description2__regex=/${description2}/` : '';
    axios.get(`${API_URL}?sort=-createdAt${search}`)
      .then((res) => dispatch({type: 'TODO_SEARCHED', payload: res.data}));
  };
};

Answer 1

Optionally, a regular expression is added to the query string of the request, available via the description2__regex key .
If the question is only about syntax, then template strings are used .

Answer 2

These are template substitutions from Es6
https://developer.mozilla.org/en/docs/Web/JavaScri...