title: How to get the value of a element inside of a array of arrays in Javascript?
body: <p>I have this list of json elements (it comes from a extern service), with a pair of group and a name:</p>
  
  <pre class="lang-js prettyprint-override"><code>const list_lookup = [
    { "rowData": ["aabb" , "gabriel"]}, 
    { "rowData": ["bbcc" , "jake"]}, 
    { "rowData": ["ccdd" , "john"]}, 
    { "rowData": ["aabb" , "chris"]}
   ]; 
  </code></pre>
  
  <p>I need to take the last appearance of the group that the user typed and store your correspondent username. Like in this case if the users input is "aabb" </p>
  
  <p>I need to take the last array, who is the last time that the "aabb" group appears. I tried many ways but i just dont know how to do this.</p>