latex itemize no space between items code example

Example 1: latex itemize spacing

\begin{itemize}
  \setlength\itemsep{1em}
  \item one
  \item two
  \item three
\end{itemize}

Example 2: latex reduce space between items

\usepackage{enumitem}
\begin{itemize}[noitemsep]
    \item 
    \item 
\end{itemize}